Log4J - Log file gets overwritten
Hi ! I am using Log4J version 1.1.3 downloaded from jakarta.apache.org. Everything seems to be working fine with it except that even if i set log4j.appender.R.MaxFileSize = 100KB log4j.appender.R.MaxBackupIndex = 10 I get only one log file and when it rolls over the 100K limit, it gets overwritten. According to documentation on the site, it should rename the old copy and start with a new file with the same name. Has anybody faced this problem before?Any solution? Regards, Praveer -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
where download struts javadoc?
Subject: where download struts javadoc? From: zb cong [EMAIL PROTECTED] === hello where can i download struts javadoc? i only find the online version on apache website . -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: How do I init a Form bean via business logic?
I've been trying to get an answer to how to initialise a form bean from this list, but with no success. See Re: Can this be done at all using Form objects within struts fram ework The reason why I don't think you can pre-populate a form from the beam (other than possibly breaking MVC) is that if the form fails to validate correctly, when it is re-displayed it will wipe out all values the user has entered - which wouldn't be the desired behaviour. Can someone please give some guidance to the best practise for this initialising a form bean via business logic. -Original Message- From: Barr, Scott [IBM GSA] [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 03:27 To: 'Struts Users Mailing List' Subject: RE: How do I init a Form bean via business logic? The best reason I can give as to why you should use form objects, is that you will pretty much always provide String getter and setters, rather than the 'real' data object types. eg Timestamp -Original Message- From: Jakkampudi, ChandraseKhar [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 1:03 PM To: 'Struts Users Mailing List' Subject: RE: How do I init a Form bean via business logic? Scott, I need to clarify this further. I am not suggesting you do away with an action. You use the action to get the data that is required as a value object. Since this is a value object, it can be re-used to serve another client. Instead of creating a form bean in the action, you set the retrieved value object from your DAO as a bean in your request. Thus, you avoid additional mapping code like form.setValue(valueObject.getValue()) and so on. Then if need be, you pre-populate the form, or display the data outside of the form in the jsp as a table or what not. An instance of where this would be particularly useful. Let us say that some fields are not editable but are display only. (like your ID). Initializing the form in the action causes part of your display to be populated from the action while the rest is in the jsp. Your argument about jsp not creating and initialising objects is not true because that is exactly what jsp:useBean, bean:define and other tags (which is the right way to do things) do. Also, if you do not initialise a form in the action, or dont need to pre-fill data, the jsp IS the place where these objects are created. Nothing in what I suggested, implies that you need to catch errors and exceptions in the jsp. I agree with you that they shouldn't and with the approach I outlined they dont have to. All of this is done in the action. I am only asking about the additional step of creating the form bean which I think is not necessary. The action creates the Business Objects. You are right. But it does not NEED to create the Form objects. It can. But I cannot see an overriding reason why it SHOULD. Thanks JC -Original Message- From: Barr, Scott [IBM GSA] [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 7:47 PM To: 'Struts Users Mailing List' Subject: RE: How do I init a Form bean via business logic? 1. If you are doing something other than creating a new view component and allowing it to set its own default values, I would imagine that you are doing an Action. 2. No it doesn't break MVC if the Action initialises the Form. If an action cannot deal with a form, where exactly is this supposed to be performed? An Action populating a form object does not mean it requires knowing how the data will be presented, it is just data. What the jsp does with it is not the concern of the action. The Action does not care if property X is displayed as static text, or in a text field. The jsp is a presentation layer, and should not be creating and initialising objects. By the time you get to your presentation layer, you should not have to be catching errors, and redirecting to error pages etc. The Action creates business objects. These objects can throw exceptions. eg. error while getting a new ID from a database. If an error occurs, I add error to the errors, and this will be displayed... If you init a Form bean in a jsp, and an exception occurs, you must deal with it in the page. 3. What additional code? If your action deals with your business layer, but should not contain business logic itself. If it does, you cannot use your business object model to provide a different interface 4. I don't see that filling a jsp with debug code makes for easier debugging. If something is populated incorrectly, you would look at your Action object. I have toString() method in my business objects, and these objects log to file. Each layer provides its own logging (I'm using log4j), so while developing I can switch log levels quite easily. Once a layer is debugged, I shouldn't have to debug it from a different layer. This makes for simple unit testing, and does away with the need for a gui debugger Scott
form looses valuse when validation maps back
Hello All,
i have for me a real strange problem. When i validate my form and there are
missing
fields then it is mapped back to the input page. All the error messages are
shown correctly.
The only thing is that my form is empty and the user has to reenter all
values, which is
really annoying.
This is my entry in the struts-config.xml
action path=/admin/createCompany
type=com.transwide.services.uma.web.action.admin.CreateCompanyAction
name=companyForm
scope=session
input=/uma/admin/create-company-step1.jsp
validate=false
forward name=success
path=/uma/admin/create-company-step2.jsp
/forward
forward name=failure
path=/uma/admin/failure.jsp
/forward
/action
The validation is done in the action class(business reason), but i tried it
also in the Form which
makes no difference. Here is part of my Action which handles the validation
ActionErrors errors = new ActionErrors();
try{
CompanyForm companyForm = (CompanyForm)form;
// some validations
if (companyForm.getAccountName()==null ||
StringUtils.isEmpty(companyForm.getAccountName())) {
errors.add(accountname, new
ActionError(error.accountname));
}
if (companyForm.getCompanyName()==null ||
StringUtils.isEmpty(companyForm.getCompanyName())) {
errors.add(companyname, new
ActionError(error.companyname));
}
if (companyForm.getPrefix()==null ||
StringUtils.isEmpty(companyForm.getPrefix())) {
errors.add(prefixlength, new ActionError(error.prefix));
} else if (companyForm.getPrefix().length() != 3) {
errors.add(prefixlength, new
ActionError(error.prefixlength));
}
if(companyForm.getCompanyTypes()==null ||
StringUtils.isEmpty(companyForm.getCompanyTypes())) {
errors.add(companytypes, new
ActionError(error.companytypes));
}
if(companyForm.getVatNumber()==null ||
StringUtils.isEmpty(companyForm.getVatNumber())) {
errors.add(vatnumber, new ActionError(error.vatnumber));
}
if (!errors.empty()) {
saveErrors(request, errors);
return (new ActionForward(mapping.getInput()));
}
I can take the form data out of the session with a scriptlet and display the
values, but
struts don't fills out the form automaticly. First thing i took a look on
it, that i maybe
configured the scope of the form incorrect and when mapping back to input he
trys to generate
a new form which is only stored in the request. But there all settings seem
to be correct.
Any idea ??
oliver
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How to read the application.resoureces file in JSP
Hello, How to read the application.resources file in the JSP file. I need this urgently.Please look inot this. Regards Arun -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: How to read the application.resoureces file in JSP
What is the goal ? Maybe there's alternative. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:25 AM To: Struts Users Mailing List Subject: How to read the application.resoureces file in JSP Hello, How to read the application.resources file in the JSP file. I need this urgently.Please look inot this. Regards Arun -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Why don't tiles cascade?
It is an expected behavior ! Tiles can be seen like functions : they takes parameters, and parameters are only visible inside the function, not outside, neither in called functions. This behavior allows to write a Tile without taking care about possible conflicts with attribute names. Imagine that you write a complex page with several nested Tiles, and several time the same Tile with different values for the same attribute. If you cascade attributes, you will have names clashing. Furthermore, while developing a Tile you will need to thing about the names used in the whole page and in other Tiles, to avoid possible conflict ! This will forbid reusable Tiles. If you want to use an attribute value inside another inserted Tile, you have to pass it explicitly. In your example, you could write something like : layout.jsp -- CUT -- tiles:insert path=/header.jsp put beanName=title beanScope=template / // In future release, beanScope will accept tiles also (same as template) /tiles:insert tiles:insert attribute=content/ tiles:insert path=/footer.jsp/ -- CUT -- Reading your example, I think you should better not cut a tag into two separate files (body and /body). Putting a start and end tag in the same file improve legibility, and minimize potential errors (forget the closing tags, forget to insert the corresponding file, ...). Cedric Jim Crossley wrote: Apparently it's not possible to access attributes of any tiles other than your immediate parent. IMHO, this restricts my ability to partition my presentation code into simple, reusable chunks. Here's a semi-practical example. Consider this snippet from a definitions file... definition name=training path=/layout.jsp put name=content value=/training.jsp/ put name=title value=Training/ /definition layout.jsp -- CUT -- tiles:insert path=/header.jsp/ tiles:insert attribute=content/ tiles:insert path=/footer.jsp/ -- CUT -- header.jsp -- CUT -- html head titletiles:getAsString name=title//title /head body -- CUT -- footer.jsp -- CUT -- /body /html -- CUT -- The above example, as simple as it is, won't work, because header.jsp can't find the attribute named title. Have I completely misunderstood the intent behind Tiles, or is it simply not quite ready for prime time? Is there a better (simpler) approach than the one taken in the above example? -- Jim -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Displaying Test if html:errors is free of errors...
I played with this same thing for a while, and I came up with the following tag combinations to do something what you want: html:messages id=error header=errors.header footer=errors.footerbean:write name=error filter=false//html:messages html:messages id=message header=messages.header footer=messages.footer message=truebean:write name=message filter=false//html:messages You can remove the references to errors.header/footer and messages.header/footer if you don't want them. Basically the first tag set only gets executed when there are errors, and the second only when there are messages. So what we do is put a success message in the request that we obviously want rendered differently then errors. Another way of doing it, which may be more what you were looking for would be: html:errors/ logic:messagesNotPresentPUT SOMETHING HERE/logic:messagesNotPresent Those should also do what you want, just depends on what you want to display when there are no errors. Hope this helps. Sean Mattos, John wrote: Hi In a jsp, I want to display some text if there are no errors present, that is, that html:errors hasn't been populated with any errors in my perform() method. What's the best way to do this? John John Mattos Sr. Developer and Architect iNDEMAND 345 Hudson St. 16th Floor New York, New York 10014 -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
My problems with Struts...
Hi, I'm a newbie to Struts and trying to fit it into an application that's modeled after Blueprints. I feel frustrated at many places...It could be just that I don't understand Struts properly yet.I feel like just using the classes that I like and leaving those features I don't prefer. I agree that it provides a nice working framework, but I find too many limitations... 1.Struts automatically read your form data into request/session scope as specified in struts-config.xml. My problems with this are Firstly, I need to transform the data types other than Strings. And then it gets funny when using arrays... If you have a 'String[] str', you don't have to initialize it in your form bean. But if you have an object array like 'Monkey[] monkeys', you need to initilize it in the form bean, or else it throws NullPointerException. How am I supposed to know the number of 'monkeys' the user wants to key in? One more thing is, for 'String[] str', the HTML parameter names should be just 'str'. All the parameters with the same name will be read into 'str[]'. But with 'Monkey[] monkeys', the parameter names should have the index like 'monkey[0].name','monkey[1].name' etc. Why is it so? And this indexed naming makes the javascript difficult to code and read. With such problems with transformation and nested bean arrays, I feel like reading the HTML data on my own. I fail to see how this feature adds much value. 2.Provides form validation. This is a good feature to have, but anyway, generally we push as much validation as we can into Javascript and if there are any real business validation to be done, I'd prefer doing it in business tier rather than in Form bean. Again it adds value, but in a large application, I don't feel it is that much. 3.Internationalization - again good, but it's not that difficult to implement on our own. 4.Tag libraries - I never really used tag libraries in JSPs, so cannot comment on the usefulness of them. Do people find the tag libraries so useful? I want to know where this feature stands the list of good things about struts. There seem to be many experienced Struts users on this list. Could you please tell me the features you find very useful and the kind of applications you are building using them? And if I'm missing something badly in my understanding? Regards, Choudary. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Night Build size?
I notice that the last 2 struts nightly builds (binaries) are about 10th of the normal size. This has happened before also. Neil -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: How do I init a Form bean via business logic?
IMHO - MVC means the flow of data between the presentation business layers is controlled by the controller (a struts Action). It's hard to prove this is the best way. I'm among the many people that feel struts is designed to help us write well designed MVC apps. A formBean is designed to be a utility to simplify/standardise the coding for passing data between HTML forms Action classes, it has no controller functions. I praise your scepticism! In my early days I was sceptical of the amount of extra code required to seperate the layers cleanly (ie. stop the view going directly to the model) but I support it now - especially for apps that update data. In an enquiry only app I think it may be good to combine the view controller functions into 1 function - only if there is hardly anything for the controller to do. A typical app displays some things updates others, I think it is better to make all data go through the controller (Action). Form data goes via the formBean, display only data is placed by the controller (Action) in the request for the view (jsp) to fetch. This requires slightly more code than having the jsp fetch data from the model (business layer) or even directly from the persistence layer (the database). But the benefit is the number of different routes of data between the view business logic is less this is highly beneficial for ease of maintenance, testing etc. It seems to me a lot of people follow design patterns a bit too dogmatically - It is good to analyse the cost of using a pattern or framework compared to it's benefits. Struts is designed for writing dozens or hundreds or more jsp's. It takes time to learn but is worth it. I'd guess your first 5 or 10 pages will take longer but beyond that they get faster faster, like a production line cranking up the speed. I must confess to not being highly experienced in struts but am in large systems design I quickly recognised struts as being an excellent usable product functionally. It design is practical pragmatic a sign that using it in the way it's designers intended is right. Blimey these discussions should not be done by email - takes too long. Was this of any use? K. - To be a bit more specific - The Action class decides the values to be displayed, gets the data makes it available for the jsp - in the formBean or the request. This includes the values to initialise forms. - The jsp displays it. Simple! --- Jakkampudi, ChandraseKhar [EMAIL PROTECTED] wrote: My reasons are as follows. I do not know if they are right or wrong, but would appreciate comments. 1. Consistency. All of the dynamic data that is presented in a jsp is via bean:write tags or scriptlets which access a value object. I think pre-populating or initializing a form should be no different. 2. Breaks MVC(IMHO). Action is a controller component. Initialization of forms is a presentation issue. 3. Additional code. A value object is generated anyway by the DAO(which you use to get the data). If you use the action for initialization, all you are doing is copying the data into the form bean. It ensures clean separation of data when you do it the other way around (i.e copying data from form bean to value object even if they are similar) because you do not want the rest of your code to know about action forms etc which are html specific. But it does not make sense (to me) to copy pure java objects/value beans into identical form beans just for pre-population. 4. Easier debugging. If your value is populated wrong, you can look at the jsp to figure out which values are being written from which bean. If you do init in the action, you have to debug java code to find out presentation issues especially for things like multiple selects of dropdowns etc. Again, I am not saying init in the action is wrong. But I saw a lot of emails saying that it is the right thing to do without giving any reason. For the above mentioned reasons, I opted not to do the init in the action. I am trying to understand why this approach is recommended over the other one? What have I missed? TIA, JC -Original Message- From: Barr, Scott [IBM GSA] [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 6:45 PM To: 'Struts Users Mailing List' Subject: RE: How do I init a Form bean via business logic? Hi JC If the data is dynamic, and we are talking about web apps here, why not populate it in the action? The form is a view component, and I don't give it any more 'smarts' than is possible. This as a neat way of separating the layers your application, one of the benefits of clean MVC design Scott -Original Message- From: Jakkampudi, ChandraseKhar [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 10:59 AM To: 'Struts Users Mailing List' Subject:RE: How do I init a Form bean via business logic? Why should pre-populating a form be done in the preceding action? When you want to display some
Error Messages and tags
We have the text for error messages declared in the ApplicationResources.properties file as per standard. We have the header and footer text as required. Now is it possible to display the error messages WITHOUT the header and footer in certain situations ? We'd like to re-use the messages and display them on the page without the header and footer on a couple of pages. In one case the message is actually a warning rather than error and to have the standard header (which indicates an error) is a bit misleading. TIA Eddie -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Struts + Tiles..
Hi.. I know you must be sick and tired of these stupid questions about struts tiles but I have a problem (imagine that). I keep getting java.lang.IllegalStateException from tomcat when using tiles. At first I thought I had just done something wrong when using tiles, but it seems that even a simple page as described below throws this exception. I have a test.jsp file: %@ taglib uri=/WEB-INF/tiles.tld prefix=tiles% html body tiles:insert page=foo.jsp/ /body /html And foo.jsp only includes the line 'foo' in it. Now when I access the page test.jsp I get the following error: [12:46:48,164,EmbeddedCatalinaServiceSX] ApplicationDispatcher[/emedia.war] Servlet.service() for servlet default threw exception java.lang.IllegalStateException at org.apache.jasper.runtime.ServletResponseWrapperInclude.getOutputStream(ServletResponseWrapperInclude.java:109) at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:1143) at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:519) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:570) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:493) at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:818) at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:390) at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:757) at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:369) at org.apache.jsp.test$jsp._jspService(test$jsp.java:73) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:202) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) [SNIP] I'm using JBoss 2.4.4 with embedded Tomcat 4.0.1 and using the latest (20020219) nightly build of struts and latest development build of tiles which I downloaded from tiles homepage. I have defined the controller as TilesRequestProcessor in struts-config.xml and in web.xml I have ActionComponentServlet as the action component. Thanks. Tuomo -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: FORM ELEMENTS MAPPING WITH JAVA BEAN
No why would you want to? Struts imposes a nice useful standard. Why not follow the capitalisation styles in the struts example ( everywhere else!). --- Amit Sharma [EMAIL PROTECTED] wrote: Hi , Struts framework says that the form element names should be same as form beam attribute names. Is there a way I could define different names .Let say FORM_NAME_USERNAME in the form is supposed to be mapped to username in Java Form Bean. Thanks, -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: sessions
Hi Bill, This has been answered but I couldn't find the answer in the archive! I'm not the expert here but - it's when a new session is created. Struts doesn't know if the browser accepts cookies (where the session id is to be stored) so puts it in the URL (URL re-writing). On the next request struts knows the cookie is accepted so doesn't need to put the sessionId inthe URL. So every time you see that it's the symptom of a new session being created - no the cause. --- Bill Page [EMAIL PROTECTED] wrote: I'm having a problem with sessions using JRun. I have noticed that the address line sometimes has a url;jsessionid=n and sometimes it doesn't. When it doesn't I seem to end up with a new session id. Any thoughts? thanks bill page [EMAIL PROTECTED] Digital Garden Software, Inc. 856 US Hwy 206 Bldg B Ste 15 Hillsborough, NJ 08844 908.904.0664 -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Error Messages and tags
1 - There is a new Messages tag in the nightly build. If you only need 1 mesage it's easy to code it yourself. 2 - Don't do this - Use a blank string for header/footer add your errors with a wrapper class that adds a special string for the 1st last message. The order of the errors is not preserved (in this release of struts) so you're header might come out last. --- Eddie Fung [EMAIL PROTECTED] wrote: We have the text for error messages declared in the ApplicationResources.properties file as per standard. We have the header and footer text as required. Now is it possible to display the error messages WITHOUT the header and footer in certain situations ? We'd like to re-use the messages and display them on the page without the header and footer on a couple of pages. In one case the message is actually a warning rather than error and to have the standard header (which indicates an error) is a bit misleading. TIA Eddie -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Struts + Tiles..
Okay... Seems to be a problem with tomcat. I tried the same thing with orion and it works like a charm. Anybody now about this kind of bug in tomcat ? Or is it a bug or a feature :) /tuomo Tuomo Syvänperä wrote: Hi.. I know you must be sick and tired of these stupid questions about struts tiles but I have a problem (imagine that). I keep getting java.lang.IllegalStateException from tomcat when using tiles. At first I thought I had just done something wrong when using tiles, but it seems that even a simple page as described below throws this exception. I have a test.jsp file: %@ taglib uri=/WEB-INF/tiles.tld prefix=tiles% html body tiles:insert page=foo.jsp/ /body /html And foo.jsp only includes the line 'foo' in it. Now when I access the page test.jsp I get the following error: [12:46:48,164,EmbeddedCatalinaServiceSX] ApplicationDispatcher[/emedia.war] Servlet.service() for servlet default threw exception java.lang.IllegalStateException at org.apache.jasper.runtime.ServletResponseWrapperInclude.getOutputStream(ServletResponseWrapperInclude.java:109) at org.apache.catalina.servlets.DefaultServlet.serveResource(DefaultServlet.java:1143) at org.apache.catalina.servlets.DefaultServlet.doGet(DefaultServlet.java:519) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679) at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:570) at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:493) at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:818) at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:390) at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.java:757) at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:369) at org.apache.jsp.test$jsp._jspService(test$jsp.java:73) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:107) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:202) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) [SNIP] I'm using JBoss 2.4.4 with embedded Tomcat 4.0.1 and using the latest (20020219) nightly build of struts and latest development build of tiles which I downloaded from tiles homepage. I have defined the controller as TilesRequestProcessor in struts-config.xml and in web.xml I have ActionComponentServlet as the action component. Thanks. Tuomo -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Error Messages and tags
Keith, not sure what you mean here re: 1- Do you mean don't bother using the ApplicationResources.properties and just return a String if we want only a single message ? 2- Can you explain how to set a special string for the 1st and last message ? The errors I have are coming out in FIFO order at the moment (order SEEMS to be preserved) . Only with each message preceded by the header and followed by a footer.. Eddie === At 10:19 PM 20/02/2002, Keith wrote: 1 - There is a new Messages tag in the nightly build. If you only need 1 mesage it's easy to code it yourself. 2 - Don't do this - Use a blank string for header/footer add your errors with a wrapper class that adds a special string for the 1st last message. The order of the errors is not preserved (in this release of struts) so you're header might come out last. --- Eddie Fung [EMAIL PROTECTED] wrote: We have the text for error messages declared in the ApplicationResources.properties file as per standard. We have the header and footer text as required. Now is it possible to display the error messages WITHOUT the header and footer in certain situations ? We'd like to re-use the messages and display them on the page without the header and footer on a couple of pages. In one case the message is actually a warning rather than error and to have the standard header (which indicates an error) is a bit misleading. TIA Eddie -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Night Build stable?
The nightly builds represent the ongoing development effort; it is our actual alpha CVS, there is no other. We try to keep it in a buildable, usable state, but there can be no guarantees. The latest builds includes a number of new features which are still settling in. This includes + the execute signature and declarative exceptions + role based security + multiple-configuration support + dynabeans If you are not ready to explore those, then I would suggest trying the build for 12 Jan, which I tucked away and have been using myself. (Though now that we have Tiles for the latest 1.1, I can start moving forward.) http://husted.com/struts/resources/jakarta-struts-20020112.zip -- Ted Husted, Husted dot Com, Fairport NY US -- Developing Java Web Applications with Struts -- Tel: +1 585 737-3463 - Web: http://husted.com/about/services Struts Newsgroup (@Basebeans.com) wrote: Subject: Night Build stable? From: Nav Sandhu [EMAIL PROTECTED] === I am thinking about updating my Struts from a November 01 nightly build. I am thinking about moving to a more recent nightly build. Is there anywhere I can find out if the nightly build is stable? Is there any tests that are done before the jar files are published? Thanks, Nav Sandhu -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: How do I init a Form bean via business logic?
Hi, How nice! I've been mulling over this for the last few days and here is a chance to discuss it! Let me try to summarize--- Option1(Struts model):- Controller updates model, retrieves the updated data and sets it in Request/Session(which JSPs use to generate the HTML). Controllers manage(set/remove data in) Session. Here Controllers act as Mediators between View and Model. Option2(Blueprints model):-Controller updates the model, notifies the updated model proxy objects(XXXWebImpl of PetStore that live in web tier) and those proxy objects update themselves. JSPs get the data from these proxy objects. In a variation of Option2, notification is not necessary and not all proxy objects are in Session. Proxy objects, when created in request scope in JSPs, get the data from model(EJBs). Here Controller doesn't set any data in Request, but may need to manage Session. For almost 2 years, I've been a believer of Option1! It's simple, works great, Session is maintained thin and View knows nothing about Model. Low coupling and it looked great. I was flaming Blueprints model in another list and here is the most convincing reason I got in favor of Option2 from one Hardy Henneberg ... Quote MVC says that views should update themselves. I think the most important argument may be, that views are considered the most volatile layer and models the most stable. So it is OK for views to depend stongly on models, but it is not OK for controllers to depend strongly on views, because the frequent changes in the view layer would generate changes in the more stable (and often more complicated) control layer. In the blueprint architecture this would also be the case, if a controller should update the views. /Quote That discussion is at http://groups.yahoo.com/group/scea_j2ee/message/2829 Recently we implemented a large project for an insurance company using a customized Blueprints architecture. The project needs heavy design because of the complexity of the system. We went for Option1 in that. The result is a bloated Controller class. It was difficult to divide it into smaller classes because of the system requirements. If I look back at the Controller class I very much like Option2! By going for Option2, I'm increasing coupling, but my code gets lot cleaner and easier to maintain. This kind of coupling is not so dangerous, I feel(and recently I was reading Craig Larman who almost quotes Hardy). From my experience, I feel that for small and less complex applications, Option1 is fine. But when you are looking at an application that needs centralized control and where the Controller is complex by nature, it may be a good idea to go for Option2. BTW, our system doesn't have 100s of JSPs. They are just around 30. But for some insurance products all those screens need to be used in one user session to complete a single transaction and that involves lot of business logic too. Currently I'm playing with the variation of Option2 I mentioned above (I still couldn't 100% agree with that Sun's model :-)). Thanks for reading...hope to see more discussion on this. Regards, Choudary. --- In [EMAIL PROTECTED], Keith [EMAIL PROTECTED] wrote: IMHO - MVC means the flow of data between the presentation business layers is controlled by the controller (a struts Action). It's hard to prove this is the best way. I'm among the many people that feel struts is designed to help us write well designed MVC apps. A formBean is designed to be a utility to simplify/standardise the coding for passing data between HTML forms Action classes, it has no controller functions. I praise your scepticism! In my early days I was sceptical of the amount of extra code required to seperate the layers cleanly (ie. stop the view going directly to the model) but I support it now - especially for apps that update data. In an enquiry only app I think it may be good to combine the view controller functions into 1 function - only if there is hardly anything for the controller to do. A typical app displays some things updates others, I think it is better to make all data go through the controller (Action). Form data goes via the formBean, display only data is placed by the controller (Action) in the request for the view (jsp) to fetch. This requires slightly more code than having the jsp fetch data from the model (business layer) or even directly from the persistence layer (the database). But the benefit is the number of different routes of data between the view business logic is less this is highly beneficial for ease of maintenance, testing etc. It seems to me a lot of people follow design patterns a bit too dogmatically - It is good to analyse the cost of using a pattern or framework compared to it's benefits. Struts is designed for writing dozens or hundreds or more jsp's. It takes time to learn but is worth it. I'd guess your first 5 or 10 pages will take longer but
Re: Night Build size?
Yes, something went awry with the build Monday morning, and the WARs are not being generated. Hopefully, we can get this fixed before the builds prior to that roll off the site. [EMAIL PROTECTED] wrote: I notice that the last 2 struts nightly builds (binaries) are about 10th of the normal size. This has happened before also. Neil -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: url to access a struts app
nevermind. i've now had my coffee, and realized that i didn't put an entry in web.xml for the actionservlet. thanks anyway :) --e-- On Wed, 20 Feb 2002 12:58:01 +0100, Edward Q. Bridges wrote: i have a rather simple problem (i think!) . . . given an actionmapping like this: action path=/login type=contentdb.view.login.Action name=loginForm scope=request validate=true input=/WEB-INF/jsp/Login.jsp forward name=continue path=/WEB-INF/jsp/Login.jsp/ /action stored in a .war file named ContentDB.war how would i access that through a web browser after deploy? (when deployed to JBoss-2.4.3_Jetty-3.1.1-1). i've tried these urls: http://localhost:8080/ContentDB/do/login http://localhost:8080/ContentDB/login http://localhost:8080/do/login http://localhost:8080/login all to no avail. when accessing the url: http://localhost:8080/ContentDBView/ it shows a dir listing for META-INF and WEB-INF (i.e. it was properly deployed). please find a jar tf listing of the war file is below. thanks in advance --e-- META-INF/ META-INF/MANIFEST.MF WEB-INF/ WEB-INF/classes/ WEB-INF/classes/contentdb/ WEB-INF/classes/contentdb/view/ WEB-INF/classes/contentdb/view/base/ WEB-INF/classes/contentdb/view/login/ WEB-INF/classes/contentdb/view/base/ActionBase.class WEB-INF/classes/contentdb/view/login/Action.class WEB-INF/classes/contentdb/view/login/Form.class WEB-INF/lib/ WEB-INF/lib/servlet.jar WEB-INF/lib/struts.jar WEB-INF/dtd/ WEB-INF/dtd/ant-project-ext.dtd WEB-INF/dtd/ant-project.dtd WEB-INF/dtd/struts-config_1_0.dtd WEB-INF/dtd/tld-1.1.dtd WEB-INF/dtd/tld-1.2.dtd WEB-INF/dtd/web-app_2_2.dtd WEB-INF/dtd/web-app_2_3.dtd WEB-INF/struts-config.xml WEB-INF/tld/ WEB-INF/tld/struts-bean.tld WEB-INF/tld/struts-form.tld WEB-INF/tld/struts-html.tld WEB-INF/tld/struts-logic.tld WEB-INF/tld/struts-template.tld WEB-INF/jsp/ WEB-INF/jsp/Login.jsp WEB-INF/web.xml -- To unsubscribe, e-mail: mailto:struts-user- [EMAIL PROTECTED] For additional commands, e-mail: mailto:struts-user- [EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: url to access a struts app
Hi Edward, You haven't said what error message you got! try http://localhost:8080/ContentDB/login.do (add .do to the end). name=loginForm implies your form bean is called LoginForm.class it's called Form.class Also I'd name the action as loginAction not just Action. Ask again if this is no help. --- Edward Q. Bridges [EMAIL PROTECTED] wrote: i have a rather simple problem (i think!) . . . given an actionmapping like this: action path=/login type=contentdb.view.login.Action name=loginForm scope=request validate=true input=/WEB-INF/jsp/Login.jsp forward name=continue path=/WEB-INF/jsp/Login.jsp/ /action stored in a .war file named ContentDB.war how would i access that through a web browser after deploy? (when deployed to JBoss-2.4.3_Jetty-3.1.1-1). i've tried these urls: http://localhost:8080/ContentDB/do/login http://localhost:8080/ContentDB/login http://localhost:8080/do/login http://localhost:8080/login all to no avail. when accessing the url: http://localhost:8080/ContentDBView/ it shows a dir listing for META-INF and WEB-INF (i.e. it was properly deployed). please find a jar tf listing of the war file is below. thanks in advance --e-- META-INF/ META-INF/MANIFEST.MF WEB-INF/ WEB-INF/classes/ WEB-INF/classes/contentdb/ WEB-INF/classes/contentdb/view/ WEB-INF/classes/contentdb/view/base/ WEB-INF/classes/contentdb/view/login/ WEB-INF/classes/contentdb/view/base/ActionBase.class WEB-INF/classes/contentdb/view/login/Action.class WEB-INF/classes/contentdb/view/login/Form.class WEB-INF/lib/ WEB-INF/lib/servlet.jar WEB-INF/lib/struts.jar WEB-INF/dtd/ WEB-INF/dtd/ant-project-ext.dtd WEB-INF/dtd/ant-project.dtd WEB-INF/dtd/struts-config_1_0.dtd WEB-INF/dtd/tld-1.1.dtd WEB-INF/dtd/tld-1.2.dtd WEB-INF/dtd/web-app_2_2.dtd WEB-INF/dtd/web-app_2_3.dtd WEB-INF/struts-config.xml WEB-INF/tld/ WEB-INF/tld/struts-bean.tld WEB-INF/tld/struts-form.tld WEB-INF/tld/struts-html.tld WEB-INF/tld/struts-logic.tld WEB-INF/tld/struts-template.tld WEB-INF/jsp/ WEB-INF/jsp/Login.jsp WEB-INF/web.xml -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Night Build size?
Oh so is it just the example stuff that is missing? If so then it should still be ok to use right? /Neil Yes, something went awry with the build Monday morning, and the WARs are not being generated. Hopefully, we can get this fixed before the builds prior to that roll off the site. [EMAIL PROTECTED] wrote: I notice that the last 2 struts nightly builds (binaries) are about 10th of the normal size. This has happened before also. Neil -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: My problems with Struts...
Yes, it's very true that Struts does not do anything you could not do for yourself. The point is that with Struts, you do not have to do it yourself. It's already been done, documented, and put into production. Not just by your team, but by hundreds of teams. Since the framework is closely aligned with published specifications and standard components, it is also very easy to swap in your own code wherever needed. Many people use the Struts controller and completely ignore the JSP tag extensions, substituting XLST, Velocity templates, or some other presentation layer. If the Struts ActionForm doesn't serve your every need, the request and response are provided to the Action, and you can do whatever you want in any way you want. If you need to go to another servlet for something, and don't even need an Action, go for it. Any URI will do. The real question is whether you want to use the Struts configuration and Actions (at least some of the time). If so, there's no downside in using Struts in your application. Every option you had before is still an option, and you gain a great front controller that your application can use as needed. -- Ted Husted, Husted dot Com, Fairport NY US -- Developing Java Web Applications with Struts -- Tel: +1 585 737-3463 -- Web: http://husted.com/about/services kothapallibc wrote: Hi, I'm a newbie to Struts and trying to fit it into an application that's modeled after Blueprints. I feel frustrated at many places...It could be just that I don't understand Struts properly yet.I feel like just using the classes that I like and leaving those features I don't prefer. I agree that it provides a nice working framework, but I find too many limitations... 1.Struts automatically read your form data into request/session scope as specified in struts-config.xml. My problems with this are Firstly, I need to transform the data types other than Strings. And then it gets funny when using arrays... If you have a 'String[] str', you don't have to initialize it in your form bean. But if you have an object array like 'Monkey[] monkeys', you need to initilize it in the form bean, or else it throws NullPointerException. How am I supposed to know the number of 'monkeys' the user wants to key in? One more thing is, for 'String[] str', the HTML parameter names should be just 'str'. All the parameters with the same name will be read into 'str[]'. But with 'Monkey[] monkeys', the parameter names should have the index like 'monkey[0].name','monkey[1].name' etc. Why is it so? And this indexed naming makes the javascript difficult to code and read. With such problems with transformation and nested bean arrays, I feel like reading the HTML data on my own. I fail to see how this feature adds much value. 2.Provides form validation. This is a good feature to have, but anyway, generally we push as much validation as we can into Javascript and if there are any real business validation to be done, I'd prefer doing it in business tier rather than in Form bean. Again it adds value, but in a large application, I don't feel it is that much. 3.Internationalization - again good, but it's not that difficult to implement on our own. 4.Tag libraries - I never really used tag libraries in JSPs, so cannot comment on the usefulness of them. Do people find the tag libraries so useful? I want to know where this feature stands the list of good things about struts. There seem to be many experienced Struts users on this list. Could you please tell me the features you find very useful and the kind of applications you are building using them? And if I'm missing something badly in my understanding? Regards, Choudary. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Struts vs Template Engine or Both
Hi, I'm a new JSP developer (previously been working with SilverStream pages). I've been working with Tomcat 4 Struts and find JSP's to be a little clumsy with the mixing of script code and html but I am persevering because developing my JSP skills is the best way to remain employable. I read a little about templete engines (velocity/turbine) but don't wish to change to them just yet as most potential employers are sold on JSP. I was wondering is it easy to use a combination of JSP/Struts with a template engine and if so are there benifits or should I really only pick one or the other. Is there any performance issues JSP vs Templates. Any constructive comments on these points or related would be appreciated. Cheers David Cruwys ([EMAIL PROTECTED]) __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: where is my commom-*.jar
Commons jars must have been included with the Struts dist previously but you can find what you are looking for here: http://jakarta.apache.org/commons/index.html I needed the BeanUtils and Collections jars to get started. Andy Andrew Goodnough Dana Commercial Credit Programmer (419) 891-2065 Struts NewsgroupTo: [EMAIL PROTECTED] (@Basebeans.ccc: om) struts Subject: where is my commom-*.jar 02/20/2002 01:55 AM Please respond to Struts Users Mailing List Subject: where is my commom-*.jar From: zb cong [EMAIL PROTECTED] === hello in jakarta's tutorial,it say that there a file called commons-*.jar under the WEB-INF/lib,but in my download bundle,there are only struts.jar and jdbc2_0-stdext.jar,why? thank you! -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: My problems with Struts...
Looking at a Struts app, the code that is outside of Struts itself you'll find is only the parts of the app that the Struts developers couldn't do for you, all split into nice little managable nuggets. Business and controlling logic being fired out of the Struts actions, and the views to match the models defined by your form beans. Quite tidy. In reply to the array issues. This is all part of managing your model. Arrays and beans are populated according to your business logic, and the JSP view presents it. If you have to be ready for a zero length array, then you have to handle it in the view markup. As for the indexed properties... there's no other way to single out a reference in a list. More often than not it wont even be a factor. I've also written an app where all validation is client-side in JavaScript. It's just that the name of the field is specified for you, rather than picking names yourself. The truly awesome upshot of this is that you don't have to write any server side population logic yourself. Mid last year I was overhearing people going on about tag libraries and so forth and was thinking about why you'd ever want write another tag that actually writes out a tag and all such stuff. Moved onto Struts and well, I'm not going back. Allows you to write apps faster and cleaner, as well as making them easier to manage. As for who's using it... well, there's the resources link on the struts site that lists some. I've been working for Zurich Financial Services for 7 months (I'm sure there's teams using Struts with lower numbers in the global fortune500 than 97. A developer on a project from Ford gave feedback on the nested tags the other day and they're 4th...) and all apps written last year and from here in will be Struts powered. And they were early adopters. Struts has become much more powerful since then. In fact, there's now solutions in Struts itself which covers all the custom extensions they felt they had to write themselves. It's becomming more and more complete as the project goes on. Last spiel... the nested tag examples (MonkeyStruts) are only arranged to show their ability, not to exemplify the model management itself. Ted Husted has a great page of recommended methodologies which will spiel on about how to go about the best way to code the MVC paradigm. Because you picked on my monkey example, I just had to make comment. :) Well, that's enough of a spiel. Arron. Kothapalli Basavaiah Choudary wrote: Hi, I'm a newbie to Struts and trying to fit it into an application that's modeled after Blueprints. I feel frustrated at many places...It could be just that I don't understand Struts properly yet.I feel like just using the classes that I like and leaving those features I don't prefer. I agree that it provides a nice working framework, but I find too many limitations... 1.Struts automatically read your form data into request/session scope as specified in struts-config.xml. My problems with this are I need to transform the data types other than Strings. And it gets funny when using arrays... If you have a 'String[] str', you don't have to initialize it in your form bean. But if you have an object array like 'Monkey[] monkeys', you need to initilize it in the form bean, or else it throws NullPointerException. How am I supposed to know the number of 'monkeys' the user wants to key in? One more thing is, for 'String[] str', the HTML parameter names should be just 'str'. All the parameters with the same name will be read into 'str[]'. But with 'Monkey[] monkeys', the parameter names should have the index like 'monkey[0].name','monkey[1].name' etc. Why is it so? And this indexed naming makes the javascript difficult to code and read. With such problems with transformation and nested bean arrays, I feel like reading the HTML data on my own. I fail to see how this feature adds much value. 2.Provides form validation. This is a good feature to have, but anyway, generally we push as much validation as we can into Javascript and if there are any real business validation to be done, I'd prefer doing it in business tier rather than in Form bean. Again it adds value, but in a large application, I don't feel it is that much. 3.Internationalization - again good, but it's not that difficult to implement on our own. 4.Tag libraries - I never really used tag libraries in JSPs, so cannot comment on the usefulness of them. Do people find the tag libraries so useful? I want to know where this feature stands the list of good things about struts. There seem to be many experienced Struts users on this list. Could you please tell me the features you find very useful and the kind of applications you are building using them? And if I'm missing something in my understanding? Regards, Choudary. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For
the nightly build problem
I got the nightly build from Apache. Using the new iterate tag with indexed, I am able to put the form values on the page with get, but set doesn't seem to work with second level form beans logic:iterate name=form1 property=object1.object2 html:text name=object2 property=property1 indexed=true /logic:iterate Looking at the source from IE, it generates something like input type=text name=object2[0].property1 value= input type=text name=object2[1].property1 value= input type=text name=object2[2].property1 value= ... Of course object2 is in object1, not in form1. That's why it doesn't work. Is there anyway to work around? -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Class reloading error in Tomcat on Sun Solaris
Subject: Class reloading error in Tomcat on Sun Solaris From: Denis A.Vishniakov [EMAIL PROTECTED] === Hello! I try to use Tomcat 4.0.2 with Struts 1.0.2 on Sun Solaris. After I upload new Form class or Action class (without tomcat shutdowning) the errore occure: javax.servlet.ServletException: Parsing error processing resource path /WEB-INF/struts-config.xml or javax.servlet.ServletException: Cannot find ActionMappings or ActionFormBeans collection or so on. Reloading of application, Start/Stop of application, Removing/Deploing of application affect no results. This problem no appeare on Windows NT 4.0. Can You help me? WBR, Denis A.Vishniakov. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
How can I register a DTD in a war or jar
I want to validate a XML with a DTD in a War application.
I have my DTD available in the war file (or in a jar).
I use a XML file like the following:
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE Application SYSTEM
file:///C:/java/jakarta-tomcat-4.0.1/webapps/myapplication/WEB-INF/Ldap
Framework.dtd
Application
...
But I want to register my DTD in Tomcat for the using of the following
XML header
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE Application PUBLIC
-//Uniway Belgium//DTD Application Configuration 1.0//EN
http://www.uniway.be/application/dtds/application_1_0.dtd;
Application
...
How can I explain to Servlet Engine (Tomcat) the mapping between this
header
and the real place of the DTD in the War or Jar?
When I use Struts in my application, I have the struts-config file
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE struts-config PUBLIC
-//Apache Software Foundation//DTD Struts Configuration
1.0//EN
http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd;
struts-config
If I look the Tomcat log I can see:
register('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN',
'jar:file:C:/java/jakarta-tomcat-4.0.1/webapps/strutsjndi/WEB-INF/
lib/struts.jar!/org/apache/struts/resources/struts-config_1_0.dtd'
The struts.jar contains the dtd and the the xml file refers to the
following
web file:
http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd;
I want to reproduce this configuration.
How can I explain this mapping to the xml parser or servlet engine?
Benoit
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Re: Error Messages and tags
1 - I do mean use ApplicationResources. You can look a message up from an Action as desribed here:- http://www.mail-archive.com/struts-user@jakarta.apache.org/msg21986.html Then use logic:present name=warningMessage scope=request font color=blue size=+1Your request has been accepted but with the following warning/font bean:write name=warningMessage scope=request / /logic:present to display it. With similar but more code you can set up an ArrayList or TreeMap(?) of messages. 2 - Order is preserved in the later version of Struts. Not sure when it changed. but must be diff. from release version the nightly builds. So now you can have in ApplicationResources.properties an 'error' common.warning.header=font color=blue size=+1Your request has been accepted but with the following warning()s/font add that before you add your message(s) to ActionErrrors. Personally I hate this sort of thing! In the world of business software functionality is worth spending money on not flashness (often not always). I'd say do it with just 1 message or use the new Messages tag. --- Eddie Fung [EMAIL PROTECTED] wrote: Keith, not sure what you mean here re: 1- Do you mean don't bother using the ApplicationResources.properties and just return a String if we want only a single message ? 2- Can you explain how to set a special string for the 1st and last message ? The errors I have are coming out in FIFO order at the moment (order SEEMS to be preserved) . Only with each message preceded by the header and followed by a footer.. Eddie === At 10:19 PM 20/02/2002, Keith wrote: 1 - There is a new Messages tag in the nightly build. If you only need 1 mesage it's easy to code it yourself. 2 - Don't do this - Use a blank string for header/footer add your errors with a wrapper class that adds a special string for the 1st last message. The order of the errors is not preserved (in this release of struts) so you're header might come out last. --- Eddie Fung [EMAIL PROTECTED] wrote: We have the text for error messages declared in the ApplicationResources.properties file as per standard. We have the header and footer text as required. Now is it possible to display the error messages WITHOUT the header and footer in certain situations ? We'd like to re-use the messages and display them on the page without the header and footer on a couple of pages. In one case the message is actually a warning rather than error and to have the standard header (which indicates an error) is a bit misleading. TIA Eddie -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Why don't tiles cascade?
Hi Cedric Cedric Dumoulin [EMAIL PROTECTED] writes: It is an expected behavior ! Tiles can be seen like functions : they takes parameters, and parameters are only visible inside the function, not outside, neither in called functions. [...] I agree the potential naming conflicts could be a problem, but at least they can be reasonably well managed in one place: the definitions file. How about a compromise? If you want to use an attribute value inside another inserted Tile, you have to pass it explicitly. In your example, you could write something like : Instead of this... tiles:insert path=/header.jsp put beanName=title beanScope=template / /tiles:insert Maybe this? tiles:insert path=/header.jsp export=true/ An export attribute with a value of true would essentially cause the tile to inherit the context of its parent[s]. Reading your example, I think you should better not cut a tag into two separate files (body and /body). Putting a start and end tag in the same file improve legibility, and minimize potential errors (forget the closing tags, forget to insert the corresponding file, ...). You're right: it did hurt to separate the begin/end tags into two files, but we have fairly complex body and div tags replicated in multiple layout (and non-layout) HTML files. For example, would you want to have to maintain the following muck in multiple files? body leftmargin=0 topmargin=0 bgproperties=fixed background=%=request.getContextPath()%bean:message key='image.background'/ onload=javascript:motd(); bgcolor=bean:message key='html.bgcolor'/ BTW, please don't misunderstand my feedback on this forum. Tiles is wonderful, and we're using it quite happily. The fact that it allows me to replace a JSP file with a definition tag in a config file is a beautiful thing. It's such a beautiful thing that I want to do it even for files beneath the top tier of defined tiles. -- Jim Cedric Jim Crossley wrote: Apparently it's not possible to access attributes of any tiles other than your immediate parent. IMHO, this restricts my ability to partition my presentation code into simple, reusable chunks. Here's a semi-practical example. Consider this snippet from a definitions file... definition name=training path=/layout.jsp put name=content value=/training.jsp/ put name=title value=Training/ /definition layout.jsp -- CUT -- tiles:insert path=/header.jsp/ tiles:insert attribute=content/ tiles:insert path=/footer.jsp/ -- CUT -- header.jsp -- CUT -- html head titletiles:getAsString name=title//title /head body -- CUT -- footer.jsp -- CUT -- /body /html -- CUT -- The above example, as simple as it is, won't work, because header.jsp can't find the attribute named title. Have I completely misunderstood the intent behind Tiles, or is it simply not quite ready for prime time? Is there a better (simpler) approach than the one taken in the above example? -- Jim -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: form looses valuse when validation maps back
did you search the archive? you should be able to find the solution there.
--- Oliver_Reflé [EMAIL PROTECTED] wrote:
Hello All,
i have for me a real strange problem. When i validate my form and there are
missing
fields then it is mapped back to the input page. All the error messages are
shown correctly.
The only thing is that my form is empty and the user has to reenter all
values, which is
really annoying.
This is my entry in the struts-config.xml
action path=/admin/createCompany
type=com.transwide.services.uma.web.action.admin.CreateCompanyAction
name=companyForm
scope=session
input=/uma/admin/create-company-step1.jsp
validate=false
forward name=success
path=/uma/admin/create-company-step2.jsp
/forward
forward name=failure
path=/uma/admin/failure.jsp
/forward
/action
The validation is done in the action class(business reason), but i tried it
also in the Form which
makes no difference. Here is part of my Action which handles the validation
ActionErrors errors = new ActionErrors();
try{
CompanyForm companyForm = (CompanyForm)form;
// some validations
if (companyForm.getAccountName()==null ||
StringUtils.isEmpty(companyForm.getAccountName())) {
errors.add(accountname, new
ActionError(error.accountname));
}
if (companyForm.getCompanyName()==null ||
StringUtils.isEmpty(companyForm.getCompanyName())) {
errors.add(companyname, new
ActionError(error.companyname));
}
if (companyForm.getPrefix()==null ||
StringUtils.isEmpty(companyForm.getPrefix())) {
errors.add(prefixlength, new ActionError(error.prefix));
} else if (companyForm.getPrefix().length() != 3) {
errors.add(prefixlength, new
ActionError(error.prefixlength));
}
if(companyForm.getCompanyTypes()==null ||
StringUtils.isEmpty(companyForm.getCompanyTypes())) {
errors.add(companytypes, new
ActionError(error.companytypes));
}
if(companyForm.getVatNumber()==null ||
StringUtils.isEmpty(companyForm.getVatNumber())) {
errors.add(vatnumber, new ActionError(error.vatnumber));
}
if (!errors.empty()) {
saveErrors(request, errors);
return (new ActionForward(mapping.getInput()));
}
I can take the form data out of the session with a scriptlet and display the
values, but
struts don't fills out the form automaticly. First thing i took a look on
it, that i maybe
configured the scope of the form incorrect and when mapping back to input he
trys to generate
a new form which is only stored in the request. But there all settings seem
to be correct.
Any idea ??
oliver
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=
~~
Search the archive:-
http://www.mail-archive.com/struts-user%40jakarta.apache.org/
~~
Keith Bacon - Looking for struts work - South-East UK.
phone UK 07960 011275
__
Do You Yahoo!?
Yahoo! Sports - Coverage of the 2002 Olympic Games
http://sports.yahoo.com
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RE: \No getter method\ error when using Bean:Write
Matt,
It seems to me that you have case wrong for userId. Could you make a small
change, then retry it? Change the following lines
bean:write name=testMatt property=id /
bean:write name=testMatt property=UserId /
to the following lines:
bean:write name=testMatt property=id /
bean:write name=testMatt property=userId /
Thanks,
Yanhui Yu
=
Information Management
Pioneer Hi-Bred International, Inc
515-253-2122
-Original Message-
From: Matt Petteys [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, February 19, 2002 5:12 AM
To: [EMAIL PROTECTED]
Subject: \No getter method\ error when using Bean:Write
Can someone point out what I am doing wrong here.. Or is this some kind of
bug??
In my JSP, this code fragement works fine..
jsp:useBean id=testMatt class=test.WebForm scope=session /
%= testMatt.getId() %br
%= testMatt.getUserId() %br
But when I try to use the following code fragement it blows up on the
property UserId. If i remove that UserId property, the id property is
retrieved fine.
bean:write name=testMatt property=id /
bean:write name=testMatt property=UserId /
The bean seems to be declared correct for UserId..
...snip...
public java.lang.String getUserId()
{
return this.userId;
}
public void setUserId( java.lang.String userId )
{
this.userId = userId;
}
..snip..
Here is the error message, running tomcat in the NetBeans IDE 3.3.1 (3.x?)
with
a struts.jar, rel 1.02. Any ideas?
javax.servlet.jsp.JspException: No getter method for property UserId of bean
testMatt
at org.apache.struts.taglib.template.InsertTag.doEndTag
(InsertTag.java:149)
at
WEB_0002dINF.templates._0002fWEB_0002dINF_0002ftemplates_0002fsecure_0002ejs
psec
ure_jsp_0._jspService
(_0002fWEB_0002dINF_0002ftemplates_0002fsecure_0002ejspsecure_jsp_0.java:118
)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service
(JspServlet.java:177)
at org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:318)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at org.netbeans.modules.web.tomcat.JspServlet.service
(JspServlet.java:91)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService
(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service
(ServletWrapper.java:372)
at org.apache.tomcat.facade.RequestDispatcherImpl.forward
(RequestDispatcherImpl.java:194)
at org.apache.struts.action.ActionServlet.processActionForward
(ActionServlet.java:1692)
at org.apache.struts.action.ActionServlet.process
(ActionServlet.java:1529)
at
org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:487)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService
(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service
(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService
(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service
(ContextManager.java:743)
at
org.apache.tomcat.service.http.HttpConnectionHandler.processConnection
(HttpConnectionHandler.java:210)
at org.apache.tomcat.service.TcpWorkerThread.runIt
(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run
(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
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RE: ActionForm Defaults/Updates Question
Hi I tried doing the same. but when there is an error in the page , it does not retreive the values from the form bean. I am validating in action class for all type of errors. Amit -Original Message- From: Jakkampudi, ChandraseKhar [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 14, 2002 8:44 PM To: 'Struts Users Mailing List' Subject: RE: ActionForm Defaults/Updates Question Here is what I do. User (Generic Value Object) UserBean (Extends form bean) On initial page we have a link to viewUser.do?userId=100 In the Action class correspoding to viewUser.do, in the perform method we have (maybe through an controller or some such) User newUser = userDAO.getUserDetails(100); request.setAttribute(user, User); mapping.findForward(user.jsp); In the user.jsp page, User user = (User)request.getAttribute(user); Use taglibs for this html:form action=modifyUser.do html:text property=userName value=%=user.getUserName()%/ html:text property=city value=%=user.getCity()%/ .. .. /html:form -JC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 14, 2002 6:52 PM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: Re: ActionForm Defaults/Updates Question In the end, I've just grabbed the Form bean from the pageContext Pardon my ignorance but can you tell me the syntax in your JSP page to do just that above?I think I'll need to be doing the same thing. thanks, Theron Mark Woon [EMAIL PROTECTED]To: Struts Users Mailing List [EMAIL PROTECTED] nford.EDU cc: Subject: Re: ActionForm Defaults/Updates Question 02/14/02 02:22 PM Please respond to Struts Users Mailing List [EMAIL PROTECTED] wrote: 1. What is the best way to load default values into an ActionForm bean that will show up the first time a user visits the site and pulls up a jsp page? You know, this question has come up a bunch of times, but I've never seen any good responses. If I've got a form in which users enter contact information, the first time the user sees it, I'd like to set the default values for the form to whatever I know about the user. Since I already have a User object, I would think that the best place to do this would be in the reset() method of the ActionForm, but there's no way to pass the ActionForm the User object (or any information that's not part of the form)! In the end, I've just grabbed the Form bean from the pageContext and called a setUser() method so that the reset() method will have something to pull data from. Am I missing something? Is there a better way to do this? Thanks, -Mark -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
custom taglib - call tag within tag
Hi.
I wanted to know if there's a possibility to call a tag within a
tag and I don't mean by that to extend my tag and use findAncestorWithClass
Or use the scope or something like that.
Say I have some Test1Tag and Test2Tag
Public Test1Tag extends TagSupport{
doStartTag(){
Test2Tag test = new Test2Tag();
test.doStartTag();
}
Is it possible, and what method should I call, that I'll get the
result as I'm getting it from calling a regular JSP's tag?
Thank you all, bye.
AW: custom taglib - call tag within tag
i don't understand the question, why don't you write in your jsp
tag1
tag2/
/tag1
-Ursprüngliche Nachricht-
Von: Arik Levin ( Tikal ) [mailto:[EMAIL PROTECTED]]
Gesendet: Mittwoch, 20. Februar 2002 15:44
An: 'Struts Users Mailing List'
Betreff: custom taglib - call tag within tag
Hi.
I wanted to know if there's a possibility to call a tag within a
tag and I don't mean by that to extend my tag and use findAncestorWithClass
Or use the scope or something like that.
Say I have some Test1Tag and Test2Tag
Public Test1Tag extends TagSupport{
doStartTag(){
Test2Tag test = new Test2Tag();
test.doStartTag();
}
Is it possible, and what method should I call, that I'll get the
result as I'm getting it from calling a regular JSP's tag?
Thank you all, bye.
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RE: sessions
thanks for the response. I couldn't find it in the archives either. I'm pretty new to the server side java (been client side for the last 5 years), servlets and all that so I may have some basic misunderstandings. It looks to me like any anchors in the HTML result will need to have encodeURL or encodeRedirectURL applied to them. Looking at the struts code the ActionServlet, it looks like struts appends the session only if the redirect flag is on. I may also not understand the definition of URL rewriting here, but can not find a definition. If I'm always forwarding through struts using say success and failure how would I know to do anything? As I see it the beauty of the forwarding mechanism is that I don't have to know the destination in the action subclass. Yet if I'm understanding this, I'll lose the session id. I seem to keep it if I always set the redirect flag in the forward class, but I'm suspicious that that is not the correct way. To further complicate this, we're using a menu program to generate the javascript for a horizontal menu at the top. Looks like (and what I'm in the middle of doing now) I'll need to manually append ;jsessionid= in a javascript function and then do a location=. As we're both invoking jsp and *.do actions, I'm parsing to figure out whether to append the session or not. If I'm going through a lot of work for something that should be done another way, I'd love to know. -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 6:14 AM To: Struts Users Mailing List Subject: Re: sessions Hi Bill, This has been answered but I couldn't find the answer in the archive! I'm not the expert here but - it's when a new session is created. Struts doesn't know if the browser accepts cookies (where the session id is to be stored) so puts it in the URL (URL re-writing). On the next request struts knows the cookie is accepted so doesn't need to put the sessionId inthe URL. So every time you see that it's the symptom of a new session being created - no the cause. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: form looses valuse when validation maps back
Hi,
Could you try to specify validate=true in the struts-config.xml instead?
Yanhui Yu
-Original Message-
From: Oliver Reflé [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 3:22 AM
To: Struts-User
Subject: form looses valuse when validation maps back
Hello All,
i have for me a real strange problem. When i validate my form and there are
missing
fields then it is mapped back to the input page. All the error messages are
shown correctly.
The only thing is that my form is empty and the user has to reenter all
values, which is
really annoying.
This is my entry in the struts-config.xml
action path=/admin/createCompany
type=com.transwide.services.uma.web.action.admin.CreateCompanyAction
name=companyForm
scope=session
input=/uma/admin/create-company-step1.jsp
validate=false
forward name=success
path=/uma/admin/create-company-step2.jsp
/forward
forward name=failure
path=/uma/admin/failure.jsp
/forward
/action
The validation is done in the action class(business reason), but i tried it
also in the Form which
makes no difference. Here is part of my Action which handles the validation
ActionErrors errors = new ActionErrors();
try{
CompanyForm companyForm = (CompanyForm)form;
// some validations
if (companyForm.getAccountName()==null ||
StringUtils.isEmpty(companyForm.getAccountName())) {
errors.add(accountname, new
ActionError(error.accountname));
}
if (companyForm.getCompanyName()==null ||
StringUtils.isEmpty(companyForm.getCompanyName())) {
errors.add(companyname, new
ActionError(error.companyname));
}
if (companyForm.getPrefix()==null ||
StringUtils.isEmpty(companyForm.getPrefix())) {
errors.add(prefixlength, new ActionError(error.prefix));
} else if (companyForm.getPrefix().length() != 3) {
errors.add(prefixlength, new
ActionError(error.prefixlength));
}
if(companyForm.getCompanyTypes()==null ||
StringUtils.isEmpty(companyForm.getCompanyTypes())) {
errors.add(companytypes, new
ActionError(error.companytypes));
}
if(companyForm.getVatNumber()==null ||
StringUtils.isEmpty(companyForm.getVatNumber())) {
errors.add(vatnumber, new ActionError(error.vatnumber));
}
if (!errors.empty()) {
saveErrors(request, errors);
return (new ActionForward(mapping.getInput()));
}
I can take the form data out of the session with a scriptlet and display the
values, but
struts don't fills out the form automaticly. First thing i took a look on
it, that i maybe
configured the scope of the form incorrect and when mapping back to input he
trys to generate
a new form which is only stored in the request. But there all settings seem
to be correct.
Any idea ??
oliver
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Re: How can I register a DTD in a war or jar
You need to implement the EntityResolver interface and
write the resolveEntity() method to return a InputSource
for your dtd (see EntityResolver doc). Actualy the
DefaultHandler already implements this interface, so
you need to overwrite the resolveEntity() method.
Don't forget to set the entity resolver in your XMLReader.
Struts uses the Digester (see jakarta-commons) that
make the job of reading xml configuration easier,
so you need to register the dtd location in the
digester as a url string and the dtd's system id.
In both cases, you can get the URL or InputStream of your dtd
in the jar file using Class.getResource() or
Class.getResourceAsStream().
Fernando
- Original Message -
From: Benoit Segaert [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Wednesday, February 20, 2002 10:58 AM
Subject: How can I register a DTD in a war or jar
I want to validate a XML with a DTD in a War application.
I have my DTD available in the war file (or in a jar).
I use a XML file like the following:
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE Application SYSTEM
file:///C:/java/jakarta-tomcat-4.0.1/webapps/myapplication/WEB-INF/Ldap
Framework.dtd
Application
...
But I want to register my DTD in Tomcat for the using of the following
XML header
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE Application PUBLIC
-//Uniway Belgium//DTD Application Configuration 1.0//EN
http://www.uniway.be/application/dtds/application_1_0.dtd;
Application
...
How can I explain to Servlet Engine (Tomcat) the mapping between this
header
and the real place of the DTD in the War or Jar?
When I use Struts in my application, I have the struts-config file
?xml version=1.0 encoding=ISO-8859-1 ?
!DOCTYPE struts-config PUBLIC
-//Apache Software Foundation//DTD Struts Configuration
1.0//EN
http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd;
struts-config
If I look the Tomcat log I can see:
register('-//Apache Software Foundation//DTD Struts Configuration
1.0//EN',
'jar:file:C:/java/jakarta-tomcat-4.0.1/webapps/strutsjndi/WEB-INF/
lib/struts.jar!/org/apache/struts/resources/struts-config_1_0.dtd'
The struts.jar contains the dtd and the the xml file refers to the
following
web file:
http://jakarta.apache.org/struts/dtds/struts-config_1_0.dtd;
I want to reproduce this configuration.
How can I explain this mapping to the xml parser or servlet engine?
Benoit
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Re: Displaying recursively defined bean...
Has any one done recursive displays using JSP? Yes and it work out fine... i just did more scope tricks :) showTree.jsp: 1. Read the root Message 2. Place root message into Request with name of message 3. display.jsp: 1. Assume there exists an object in request called message of type Message copy the message object from the request in the page scope (bean:define). 2. Display the details of the message using page scope object 3. Iterate over message.getReplies() using page scope object 4. For each object in the iteration a. Put the object into request with the name of message b. i hope you get it to work ... -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: the nightly build problem
Hi, Could you use bean:define for object2 inside the logic:iterate which then needs to have propoerty=object1 only? Yanhui Yu -Original Message- From: Christopher Cheng [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 7:36 AM To: 'Struts Users Mailing List' Subject: the nightly build problem I got the nightly build from Apache. Using the new iterate tag with indexed, I am able to put the form values on the page with get, but set doesn't seem to work with second level form beans logic:iterate name=form1 property=object1.object2 html:text name=object2 property=property1 indexed=true /logic:iterate Looking at the source from IE, it generates something like input type=text name=object2[0].property1 value= input type=text name=object2[1].property1 value= input type=text name=object2[2].property1 value= ... Of course object2 is in object1, not in form1. That's why it doesn't work. Is there anyway to work around? -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: custom taglib - call tag within tag
This is what I need, if anybody knows how please do reply. Thanx.
-Original Message-
From: Oliver Reflé [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 4:41 PM
To: Struts Users Mailing List
Subject: AW: custom taglib - call tag within tag
i don't understand the question, why don't you write in your jsp
tag1
tag2/
/tag1
-Ursprüngliche Nachricht-
Von: Arik Levin ( Tikal ) [mailto:[EMAIL PROTECTED]]
Gesendet: Mittwoch, 20. Februar 2002 15:44
An: 'Struts Users Mailing List'
Betreff: custom taglib - call tag within tag
Hi.
I wanted to know if there's a possibility to call a tag within a
tag and I don't mean by that to extend my tag and use findAncestorWithClass
Or use the scope or something like that.
Say I have some Test1Tag and Test2Tag
Public Test1Tag extends TagSupport{
doStartTag(){
Test2Tag test = new Test2Tag();
test.doStartTag();
}
Is it possible, and what method should I call, that I'll get the
result as I'm getting it from calling a regular JSP's tag?
Thank you all, bye.
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ActionForm and default values
Hi I want to populate my page with default value So, in order to do that I have a value object (ReportData), ReportDataForm (Form Bean) I populate the Value object through one of the Action classes and then do a Action Forward to one of the Jsp namely ReportData.jsp In the ReportData.jsp I do following ReportData reoportData = (ReportData)request.getAttribute(reportdata); html:form action=reportAction.do html:text property=reportName value=%=reportData.getReportName()%/ .. .. I do all the validation In ReportAction class which is mapped to reportAction.do But when there is an error In the field , I am not able to get the value populated for the text field. Is there something wrong I am doing. Or is there any other better way of doing this thing.. Amit -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: ActionForm and default values
try removing the value= attribute from your html: text. hope that helps. --- Dua, Amit [EMAIL PROTECTED] wrote: Hi I want to populate my page with default value So, in order to do that I have a value object (ReportData), ReportDataForm (Form Bean) I populate the Value object through one of the Action classes and then do a Action Forward to one of the Jsp namely ReportData.jsp In the ReportData.jsp I do following ReportData reoportData = (ReportData)request.getAttribute(reportdata); html:form action=reportAction.do html:text property=reportName value=%=reportData.getReportName()%/ .. .. I do all the validation In ReportAction class which is mapped to reportAction.do But when there is an error In the field , I am not able to get the value populated for the text field. Is there something wrong I am doing. Or is there any other better way of doing this thing.. Amit -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: ActionForm and default values
But then how will I set the default values amit -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 10:36 AM To: Struts Users Mailing List Subject: Re: ActionForm and default values try removing the value= attribute from your html: text. hope that helps. --- Dua, Amit [EMAIL PROTECTED] wrote: Hi I want to populate my page with default value So, in order to do that I have a value object (ReportData), ReportDataForm (Form Bean) I populate the Value object through one of the Action classes and then do a Action Forward to one of the Jsp namely ReportData.jsp In the ReportData.jsp I do following ReportData reoportData = (ReportData)request.getAttribute(reportdata); html:form action=reportAction.do html:text property=reportName value=%=reportData.getReportName()%/ .. .. I do all the validation In ReportAction class which is mapped to reportAction.do But when there is an error In the field , I am not able to get the value populated for the text field. Is there something wrong I am doing. Or is there any other better way of doing this thing.. Amit -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Strange problem
I loop if I set up struts-config so input=SelectParty.do when it should be SelectParty.jsp. But then you would see SelectPartyAction's perform method being executed your debug msg. Is it possible you have a more complex flow of control. Stick debug messages everywhere! --- Tim Sawyer [EMAIL PROTECTED] wrote: I'm using struts 1.0.1 with tomcat 3.2.1, and am encountering a wierd problem. I'm running an action to search for a list of people, and that completes fine. Then I can click on that person to select it and proceed to another page. However, clicking on the person hyperlink leads to java.exe taking 100% CPU and everything just sits there. The link looks like this: a href=/AddFindParty/SelectParty.do?ID=151975Ernie, Uncle /a br So as far as I can tell, the click on the do returns control to the controller servlet, which then keeps it and sits there burning cpu cycles. I have a debug statemement in the perform() method in the appropriate action handler for SelectParty.do and it doesn't get that far. I even commented out SelectParty in my struts-config.xml file, and it made absolutely no difference. Anyone got any ideas? I'm new to struts, but I got the first bit to work, and I can't understand why this doesn't. Cheers, Tim. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: ActionForm and default values
This question seems to be going around and around this mailing list and no one has produced an answer. -Original Message- From: Dua, Amit [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 15:46 To: 'Struts Users Mailing List' Cc: '[EMAIL PROTECTED]' Subject: RE: ActionForm and default values But then how will I set the default values amit -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 10:36 AM To: Struts Users Mailing List Subject: Re: ActionForm and default values try removing the value= attribute from your html: text. hope that helps. --- Dua, Amit [EMAIL PROTECTED] wrote: Hi I want to populate my page with default value So, in order to do that I have a value object (ReportData), ReportDataForm (Form Bean) I populate the Value object through one of the Action classes and then do a Action Forward to one of the Jsp namely ReportData.jsp In the ReportData.jsp I do following ReportData reoportData = (ReportData)request.getAttribute(reportdata); html:form action=reportAction.do html:text property=reportName value=%=reportData.getReportName()%/ .. .. I do all the validation In ReportAction class which is mapped to reportAction.do But when there is an error In the field , I am not able to get the value populated for the text field. Is there something wrong I am doing. Or is there any other better way of doing this thing.. Amit -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: form looses valuse when validation maps back
Maybe put debug mesages in your formBean getter/setters to check they are being
called the values are as expected.
--- Yu, Yanhui [EMAIL PROTECTED] wrote:
Hi,
Could you try to specify validate=true in the struts-config.xml instead?
Yanhui Yu
-Original Message-
From: Oliver Reflé [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 3:22 AM
To: Struts-User
Subject: form looses valuse when validation maps back
Hello All,
i have for me a real strange problem. When i validate my form and there are
missing
fields then it is mapped back to the input page. All the error messages are
shown correctly.
The only thing is that my form is empty and the user has to reenter all
values, which is
really annoying.
This is my entry in the struts-config.xml
action path=/admin/createCompany
type=com.transwide.services.uma.web.action.admin.CreateCompanyAction
name=companyForm
scope=session
input=/uma/admin/create-company-step1.jsp
validate=false
forward name=success
path=/uma/admin/create-company-step2.jsp
/forward
forward name=failure
path=/uma/admin/failure.jsp
/forward
/action
The validation is done in the action class(business reason), but i tried it
also in the Form which
makes no difference. Here is part of my Action which handles the validation
ActionErrors errors = new ActionErrors();
try{
CompanyForm companyForm = (CompanyForm)form;
// some validations
if (companyForm.getAccountName()==null ||
StringUtils.isEmpty(companyForm.getAccountName())) {
errors.add(accountname, new
ActionError(error.accountname));
}
if (companyForm.getCompanyName()==null ||
StringUtils.isEmpty(companyForm.getCompanyName())) {
errors.add(companyname, new
ActionError(error.companyname));
}
if (companyForm.getPrefix()==null ||
StringUtils.isEmpty(companyForm.getPrefix())) {
errors.add(prefixlength, new ActionError(error.prefix));
} else if (companyForm.getPrefix().length() != 3) {
errors.add(prefixlength, new
ActionError(error.prefixlength));
}
if(companyForm.getCompanyTypes()==null ||
StringUtils.isEmpty(companyForm.getCompanyTypes())) {
errors.add(companytypes, new
ActionError(error.companytypes));
}
if(companyForm.getVatNumber()==null ||
StringUtils.isEmpty(companyForm.getVatNumber())) {
errors.add(vatnumber, new ActionError(error.vatnumber));
}
if (!errors.empty()) {
saveErrors(request, errors);
return (new ActionForward(mapping.getInput()));
}
I can take the form data out of the session with a scriptlet and display the
values, but
struts don't fills out the form automaticly. First thing i took a look on
it, that i maybe
configured the scope of the form incorrect and when mapping back to input he
trys to generate
a new form which is only stored in the request. But there all settings seem
to be correct.
Any idea ??
oliver
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phone UK 07960 011275
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Re: ActionForm and default values
It's pretty simple, I think. 1) The formbean is passed to the action's perform method by the Struts controller. 2) The action populates the formbean (ReportDataForm) from the value object (ReportData). 3) The action returns the appropriate ActionForm to render the view. 4) The view (ReportData.jsp) need look no more complicated than this: html:form action=/reportAction html:text property=reportName/ /html:form -- Jim Ian Beaumont [EMAIL PROTECTED] writes: This question seems to be going around and around this mailing list and no one has produced an answer. -Original Message- From: Dua, Amit [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 15:46 To: 'Struts Users Mailing List' Cc: '[EMAIL PROTECTED]' Subject: RE: ActionForm and default values But then how will I set the default values amit -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 10:36 AM To: Struts Users Mailing List Subject: Re: ActionForm and default values try removing the value= attribute from your html: text. hope that helps. --- Dua, Amit [EMAIL PROTECTED] wrote: Hi I want to populate my page with default value So, in order to do that I have a value object (ReportData), ReportDataForm (Form Bean) I populate the Value object through one of the Action classes and then do a Action Forward to one of the Jsp namely ReportData.jsp In the ReportData.jsp I do following ReportData reoportData = (ReportData)request.getAttribute(reportdata); html:form action=reportAction.do html:text property=reportName value=%=reportData.getReportName()%/ .. .. I do all the validation In ReportAction class which is mapped to reportAction.do But when there is an error In the field , I am not able to get the value populated for the text field. Is there something wrong I am doing. Or is there any other better way of doing this thing.. Amit -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: sessions
I never had a problem with sessions or links. It's very straightforward. Struts deals with moving around inside 1 web-app using Forwards not Redirects. A session is always there for your jsp or Action class to use. Struts handles the user denying cookies - it automatically uses URL re-writing to store the sessionID on the client. Redirect is for going off to a different server or web-app which don't know anything about the session being left. If you want to pass data to the new location you have to park it somewhere else. So not being a super expert - really all I can assure you is it ought to be very simple for normal requirements. Hope that helps - Happy strutting - Keith. --- Bill Page [EMAIL PROTECTED] wrote: thanks for the response. I couldn't find it in the archives either. I'm pretty new to the server side java (been client side for the last 5 years), servlets and all that so I may have some basic misunderstandings. It looks to me like any anchors in the HTML result will need to have encodeURL or encodeRedirectURL applied to them. Looking at the struts code the ActionServlet, it looks like struts appends the session only if the redirect flag is on. I may also not understand the definition of URL rewriting here, but can not find a definition. If I'm always forwarding through struts using say success and failure how would I know to do anything? As I see it the beauty of the forwarding mechanism is that I don't have to know the destination in the action subclass. Yet if I'm understanding this, I'll lose the session id. I seem to keep it if I always set the redirect flag in the forward class, but I'm suspicious that that is not the correct way. To further complicate this, we're using a menu program to generate the javascript for a horizontal menu at the top. Looks like (and what I'm in the middle of doing now) I'll need to manually append ;jsessionid= in a javascript function and then do a location=. As we're both invoking jsp and *.do actions, I'm parsing to figure out whether to append the session or not. If I'm going through a lot of work for something that should be done another way, I'd love to know. -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 6:14 AM To: Struts Users Mailing List Subject: Re: sessions Hi Bill, This has been answered but I couldn't find the answer in the archive! I'm not the expert here but - it's when a new session is created. Struts doesn't know if the browser accepts cookies (where the session id is to be stored) so puts it in the URL (URL re-writing). On the next request struts knows the cookie is accepted so doesn't need to put the sessionId inthe URL. So every time you see that it's the symptom of a new session being created - no the cause. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
java.lang.NoClassDefFoundError (class in struts.jar) on WebLogic 6.1
OK, I searched through the archives and it seems I am not the first to encounter this problem. I didn't see a conclusive solution, however, so thought I would try again. All details and stack trace are given below. Any help is much appreciated. Thanks, Mike Platform WebLogic 6.1 on Windows 2000 Struts 1.0.2 (happens with 1.0, also) Deployment setup: 1.struts.jar is in WEB-INF/lib 2.all the .tld files are in WEB-INF (do these need to be in same dir?) 3.struts.jar in not in any of my EJB jars nor system classpath 4.Trouble deploying/running application as an EAR file. No problem when deploying the EJBs (4 jar files) and WAR file seperately. Problem Description: I am able to invoke my GetLogonAction, which results in the request being forwared to logon.jsp. So, obviously struts.jar is in the classpath in order for this to happen. However, when the system tries to load logon.jsp, there is a problem at the first strutshtml tag and the following stack trace results: Feb 20, 2002 10:44:17 AM EST Info HTTP mdunbar myserver ExecuteThread: '14' for queue: 'default' 101047 [WebAppServletContext(6725640,ipp,/ipp)] resolved taglib uri '/WEB-INF/struts-html.tld' to taglib-location /WEB-INF/struts-html.tld: Feb 20, 2002 10:44:18 AM EST Info HTTP mdunbar myserver ExecuteThread: '14' for queue: 'default' 101047 [WebAppServletContext(6725640,ipp,/ipp)] Generated java file: C:\bea\wlserver6.1\config\mydomain\applications\.wlnotdelete\wlap9204\WEB-INF\_tmp_war_myserver_myserver_ipp\jsp_servlet\_logon.java Feb 20, 2002 10:44:22 AM EST Error HTTP mdunbar myserver ExecuteThread: '14' for queue: 'default' 101020 [WebAppServletContext(6725640,ipp,/ipp)] Servlet failed with Exception java.lang.NoClassDefFoundError: org/apache/struts/action/ActionForm at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:486) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:111) at weblogic.utils.classloaders.GenericClassLoader.findLocalClass(GenericClassLoader.java:338) at weblogic.utils.classloaders.GenericClassLoader.findClass(GenericClassLoader.java:155) at java.lang.ClassLoader.loadClass(ClassLoader.java:297) at java.lang.ClassLoader.loadClass(ClassLoader.java:290) at java.lang.ClassLoader.loadClass(ClassLoader.java:253) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:120) at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:563) at jsp_servlet._logon._jspService(_logon.java:112) at weblogic.servlet.jsp.JspBase.service(JspBase.java:27) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:263) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:302) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200) at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:190) at org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.java:1758) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1595) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:491) at javax.servlet.http.HttpServlet.service(HttpServlet.java:740) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:263) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2390) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:1959) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120) __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: Class reloading error in Tomcat on Sun Solaris
Heavens - don't let Bill Gates find out about this. He'll start crowing. Win NT beats Solaris - oh dear. Are you saying restarting the server doesn't make it go away? I get this sort of thing after recompiling have to restart Tomcat (on Win98). As I understand I shouldn't have to. --- Struts Newsgroup [EMAIL PROTECTED] wrote: Subject: Class reloading error in Tomcat on Sun Solaris From: Denis A.Vishniakov [EMAIL PROTECTED] === Hello! I try to use Tomcat 4.0.2 with Struts 1.0.2 on Sun Solaris. After I upload new Form class or Action class (without tomcat shutdowning) the errore occure: javax.servlet.ServletException: Parsing error processing resource path /WEB-INF/struts-config.xml or javax.servlet.ServletException: Cannot find ActionMappings or ActionFormBeans collection or so on. Reloading of application, Start/Stop of application, Removing/Deploing of application affect no results. This problem no appeare on Windows NT 4.0. Can You help me? WBR, Denis A.Vishniakov. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: ActionForm and default values
Ok - I want to select an item on one page which will take me to another page where I can edit the selected item. How do I pre-populate the form for the edit page in the action for the selected item as the form won't exist at this point? -Original Message- From: Jim Crossley [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 16:06 To: Struts Users Mailing List Subject: Re: ActionForm and default values It's pretty simple, I think. 1) The formbean is passed to the action's perform method by the Struts controller. 2) The action populates the formbean (ReportDataForm) from the value object (ReportData). 3) The action returns the appropriate ActionForm to render the view. 4) The view (ReportData.jsp) need look no more complicated than this: html:form action=/reportAction html:text property=reportName/ /html:form -- Jim Ian Beaumont [EMAIL PROTECTED] writes: This question seems to be going around and around this mailing list and no one has produced an answer. -Original Message- From: Dua, Amit [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 15:46 To: 'Struts Users Mailing List' Cc: '[EMAIL PROTECTED]' Subject: RE: ActionForm and default values But then how will I set the default values amit -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 10:36 AM To: Struts Users Mailing List Subject: Re: ActionForm and default values try removing the value= attribute from your html: text. hope that helps. --- Dua, Amit [EMAIL PROTECTED] wrote: Hi I want to populate my page with default value So, in order to do that I have a value object (ReportData), ReportDataForm (Form Bean) I populate the Value object through one of the Action classes and then do a Action Forward to one of the Jsp namely ReportData.jsp In the ReportData.jsp I do following ReportData reoportData = (ReportData)request.getAttribute(reportdata); html:form action=reportAction.do html:text property=reportName value=%=reportData.getReportName()%/ .. .. I do all the validation In ReportAction class which is mapped to reportAction.do But when there is an error In the field , I am not able to get the value populated for the text field. Is there something wrong I am doing. Or is there any other better way of doing this thing.. Amit -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: ActionForm and default values
It is that darn simple! I remember being rather confused learning struts spent a lot of time experimenting with the tags to see what happened. It's a complicated environment - the code is what i call 'dense' (no not the coder!) ie. each line requires a lot of knowledge to understand - you have to experiment let the knowledge sink in slowly. You need to learn familiarity with the server environment struts jsp. Also you need to learn how to debug quickly (use lots of debug logs) , how to have a quick compile to test cycle. Are we missing stuff in the struts example apps? You should be able to copy adapt them when it breaks go back copy again. --- Jim Crossley [EMAIL PROTECTED] wrote: It's pretty simple, I think. 1) The formbean is passed to the action's perform method by the Struts controller. 2) The action populates the formbean (ReportDataForm) from the value object (ReportData). 3) The action returns the appropriate ActionForm to render the view. 4) The view (ReportData.jsp) need look no more complicated than this: html:form action=/reportAction html:text property=reportName/ /html:form -- Jim Ian Beaumont [EMAIL PROTECTED] writes: This question seems to be going around and around this mailing list and no one has produced an answer. -Original Message- From: Dua, Amit [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 15:46 To: 'Struts Users Mailing List' Cc: '[EMAIL PROTECTED]' Subject: RE: ActionForm and default values But then how will I set the default values amit -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 10:36 AM To: Struts Users Mailing List Subject: Re: ActionForm and default values try removing the value= attribute from your html: text. hope that helps. --- Dua, Amit [EMAIL PROTECTED] wrote: Hi I want to populate my page with default value So, in order to do that I have a value object (ReportData), ReportDataForm (Form Bean) I populate the Value object through one of the Action classes and then do a Action Forward to one of the Jsp namely ReportData.jsp In the ReportData.jsp I do following ReportData reoportData = (ReportData)request.getAttribute(reportdata); html:form action=reportAction.do html:text property=reportName value=%=reportData.getReportName()%/ .. .. I do all the validation In ReportAction class which is mapped to reportAction.do But when there is an error In the field , I am not able to get the value populated for the text field. Is there something wrong I am doing. Or is there any other better way of doing this thing.. Amit -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: ActionForm and default values
Ian Beaumont [EMAIL PROTECTED] writes: Ok - I want to select an item on one page which will take me to another page where I can edit the selected item. Sounds common enough. How do I pre-populate the form for the edit page in the action for the selected item as the form won't exist at this point? As long as you have the name attribute set correctly for the appropriate action element of struts-config, the formbean will always exist! The controller servlet creates it for you. -- Jim -Original Message- From: Jim Crossley [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 16:06 To: Struts Users Mailing List Subject: Re: ActionForm and default values It's pretty simple, I think. 1) The formbean is passed to the action's perform method by the Struts controller. 2) The action populates the formbean (ReportDataForm) from the value object (ReportData). 3) The action returns the appropriate ActionForm to render the view. 4) The view (ReportData.jsp) need look no more complicated than this: html:form action=/reportAction html:text property=reportName/ /html:form -- Jim Ian Beaumont [EMAIL PROTECTED] writes: This question seems to be going around and around this mailing list and no one has produced an answer. -Original Message- From: Dua, Amit [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 15:46 To: 'Struts Users Mailing List' Cc: '[EMAIL PROTECTED]' Subject: RE: ActionForm and default values But then how will I set the default values amit -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 10:36 AM To: Struts Users Mailing List Subject: Re: ActionForm and default values try removing the value= attribute from your html: text. hope that helps. --- Dua, Amit [EMAIL PROTECTED] wrote: Hi I want to populate my page with default value So, in order to do that I have a value object (ReportData), ReportDataForm (Form Bean) I populate the Value object through one of the Action classes and then do a Action Forward to one of the Jsp namely ReportData.jsp In the ReportData.jsp I do following ReportData reoportData = (ReportData)request.getAttribute(reportdata); html:form action=reportAction.do html:text property=reportName value=%=reportData.getReportName()%/ .. .. I do all the validation In ReportAction class which is mapped to reportAction.do But when there is an error In the field , I am not able to get the value populated for the text field. Is there something wrong I am doing. Or is there any other better way of doing this thing.. Amit -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: ActionForm and default values
This means that in the action for the select item I need to get hold of
the form bean for the next page I'm going to so I can populate it.
Two problems with this:
1. How do I get hold of the form bean? Do I create it myself?
2. This all relies on me knowing the mappings of what page I'm going to go
to next so I can populate the form bean. This defeats the object of having
the struts-XML file.
Below is the text from a previous email I sent. The only reply I got was
the example didn't show 'best practises'. In which case, what is the best
practise.
I've been through the struts-example again. What I want to achieve is
something similar to the 'Edit user registration details'. This
pre-populates the form with existing details. Now the way the example does
this is to create the RegistrationForm in the action and then populate it.
From EditRegistrationAction.java
// Populate the user registration form
if (form == null) {
if (servlet.getDebug() = 1)
servlet.log( Creating new RegistrationForm bean under key
+ mapping.getAttribute());
form = new RegistrationForm();
if (request.equals(mapping.getScope()))
request.setAttribute(mapping.getAttribute(), form);
else
session.setAttribute(mapping.getAttribute(), form);
}
This seems really nasty as you are now hard-coding the name of the form
class that will be used for validation on the next page. Any changes in
future to the struts-config file may well break the system. It doesn't
feel right to have to create these forms ourselves.
Wouldn't it be more sensible to have a pre-creation method on the action of
a form that allowed allowed a the action to populate the form fields before
the page was displayed.
-Original Message-
From: Jim Crossley [mailto:[EMAIL PROTECTED]]
Sent: 20 February 2002 16:38
To: Struts Users Mailing List
Subject: Re: ActionForm and default values
Ian Beaumont [EMAIL PROTECTED] writes:
Ok - I want to select an item on one page which will take me to
another page where I can edit the selected item.
Sounds common enough.
How do I pre-populate the form for the edit page in the action for
the selected item as the form won't exist at this point?
As long as you have the name attribute set correctly for the
appropriate action element of struts-config, the formbean will
always exist! The controller servlet creates it for you.
-- Jim
-Original Message-
From: Jim Crossley [mailto:[EMAIL PROTECTED]]
Sent: 20 February 2002 16:06
To: Struts Users Mailing List
Subject: Re: ActionForm and default values
It's pretty simple, I think.
1) The formbean is passed to the action's perform method by the Struts
controller.
2) The action populates the formbean (ReportDataForm) from the value
object (ReportData).
3) The action returns the appropriate ActionForm to render the view.
4) The view (ReportData.jsp) need look no more complicated than this:
html:form action=/reportAction
html:text property=reportName/
/html:form
-- Jim
Ian Beaumont [EMAIL PROTECTED] writes:
This question seems to be going around and around this mailing list
and
no
one has produced an answer.
-Original Message-
From: Dua, Amit [mailto:[EMAIL PROTECTED]]
Sent: 20 February 2002 15:46
To: 'Struts Users Mailing List'
Cc: '[EMAIL PROTECTED]'
Subject: RE: ActionForm and default values
But then how will I set the default values
amit
-Original Message-
From: Keith [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 10:36 AM
To: Struts Users Mailing List
Subject: Re: ActionForm and default values
try removing the value= attribute from your html: text.
hope that helps.
--- Dua, Amit [EMAIL PROTECTED] wrote:
Hi
I want to populate my page with default value
So, in order to do that
I have a value object (ReportData), ReportDataForm (Form Bean)
I populate the Value object through one of the Action classes and
then
do
a
Action Forward to one of the Jsp namely ReportData.jsp
In the ReportData.jsp I do following
ReportData reoportData =
(ReportData)request.getAttribute(reportdata);
html:form action=reportAction.do
html:text property=reportName
value=%=reportData.getReportName()%/
..
..
I do all the validation In ReportAction class which is mapped to
reportAction.do
But when there is an error In the field , I am not able to get the
value
populated for the text field.
Is there something wrong I am doing.
Or is there any other better way of doing this thing..
Amit
--
To unsubscribe, e-mail:
mailto:[EMAIL PROTECTED]
For additional commands, e-mail:
mailto:[EMAIL PROTECTED]
=
Re: ActionForm and default values
1. It gets created by the ActionServlet and passed to the action's perform
method as an ActionForm. Just cast it.
I don't understand what you mean by 2.
- Original Message -
From: Ian Beaumont [EMAIL PROTECTED]
To: 'Struts Users Mailing List' [EMAIL PROTECTED]
Sent: Wednesday, February 20, 2002 10:52 AM
Subject: RE: ActionForm and default values
This means that in the action for the select item I need to get hold of
the form bean for the next page I'm going to so I can populate it.
Two problems with this:
1. How do I get hold of the form bean? Do I create it myself?
2. This all relies on me knowing the mappings of what page I'm going to go
to next so I can populate the form bean. This defeats the object of
having
the struts-XML file.
Below is the text from a previous email I sent. The only reply I got was
the example didn't show 'best practises'. In which case, what is the best
practise.
I've been through the struts-example again. What I want to achieve is
something similar to the 'Edit user registration details'. This
pre-populates the form with existing details. Now the way the example
does
this is to create the RegistrationForm in the action and then populate it.
From EditRegistrationAction.java
// Populate the user registration form
if (form == null) {
if (servlet.getDebug() = 1)
servlet.log( Creating new RegistrationForm bean under key
+ mapping.getAttribute());
form = new RegistrationForm();
if (request.equals(mapping.getScope()))
request.setAttribute(mapping.getAttribute(), form);
else
session.setAttribute(mapping.getAttribute(), form);
}
This seems really nasty as you are now hard-coding the name of the form
class that will be used for validation on the next page. Any changes in
future to the struts-config file may well break the system. It doesn't
feel right to have to create these forms ourselves.
Wouldn't it be more sensible to have a pre-creation method on the action
of
a form that allowed allowed a the action to populate the form fields
before
the page was displayed.
-Original Message-
From: Jim Crossley [mailto:[EMAIL PROTECTED]]
Sent: 20 February 2002 16:38
To: Struts Users Mailing List
Subject: Re: ActionForm and default values
Ian Beaumont [EMAIL PROTECTED] writes:
Ok - I want to select an item on one page which will take me to
another page where I can edit the selected item.
Sounds common enough.
How do I pre-populate the form for the edit page in the action for
the selected item as the form won't exist at this point?
As long as you have the name attribute set correctly for the
appropriate action element of struts-config, the formbean will
always exist! The controller servlet creates it for you.
-- Jim
-Original Message-
From: Jim Crossley [mailto:[EMAIL PROTECTED]]
Sent: 20 February 2002 16:06
To: Struts Users Mailing List
Subject: Re: ActionForm and default values
It's pretty simple, I think.
1) The formbean is passed to the action's perform method by the Struts
controller.
2) The action populates the formbean (ReportDataForm) from the value
object (ReportData).
3) The action returns the appropriate ActionForm to render the view.
4) The view (ReportData.jsp) need look no more complicated than this:
html:form action=/reportAction
html:text property=reportName/
/html:form
-- Jim
Ian Beaumont [EMAIL PROTECTED] writes:
This question seems to be going around and around this mailing list
and
no
one has produced an answer.
-Original Message-
From: Dua, Amit [mailto:[EMAIL PROTECTED]]
Sent: 20 February 2002 15:46
To: 'Struts Users Mailing List'
Cc: '[EMAIL PROTECTED]'
Subject: RE: ActionForm and default values
But then how will I set the default values
amit
-Original Message-
From: Keith [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 10:36 AM
To: Struts Users Mailing List
Subject: Re: ActionForm and default values
try removing the value= attribute from your html: text.
hope that helps.
--- Dua, Amit [EMAIL PROTECTED] wrote:
Hi
I want to populate my page with default value
So, in order to do that
I have a value object (ReportData), ReportDataForm (Form Bean)
I populate the Value object through one of the Action classes and
then
do
a
Action Forward to one of the Jsp namely ReportData.jsp
In the ReportData.jsp I do following
ReportData reoportData =
(ReportData)request.getAttribute(reportdata);
html:form action=reportAction.do
html:text property=reportName
value=%=reportData.getReportName()%/
..
..
I do all the validation In ReportAction class which is mapped to
reportAction.do
RE: ActionForm and default values
This is probably a common question, which should have a corresponding FAQ 'How do I pre-populate an HTML form using ActionForm?' I think the answer is you either set the values in the constructor of your ActionForm subclass implementation, but this wasn't immediately obvious to me either. You can infer the answer from this paragraph the user guide: The form tag renders an HTML form element, based on the specified attributes. It also associates all of the fields within this form with a session scoped FormBean that is stored under the key logonForm. The Struts developer provides the Java implementation of this form bean, subclassing the Struts class ActionForm. This bean is used to provide initial values for all of the input fields that have names matching the property names of the bean. If an appropriate bean is not found, a new one will be created automatically, using the specified Java class name. I think you can specify non-dynamic values for a form bean in the struts-config file if you extend DynaActionForm: * Use the standard class org.apache.struts.action.DynaActionForm, which will be populated with properties defined by form-property elements nested inside the form-bean element. Note that you can also set initial values in the form-property element; these are used in the default implementation of reset(). Intelligent defaults take care of the most common cases. Note that the default validate() method does NO checking, so you will need to do everything in your Action. Corey -Original Message- From: Jim Crossley [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 10:38 AM To: Struts Users Mailing List Subject: Re: ActionForm and default values Ian Beaumont [EMAIL PROTECTED] writes: Ok - I want to select an item on one page which will take me to another page where I can edit the selected item. Sounds common enough. How do I pre-populate the form for the edit page in the action for the selected item as the form won't exist at this point? As long as you have the name attribute set correctly for the appropriate action element of struts-config, the formbean will always exist! The controller servlet creates it for you. -- Jim -Original Message- From: Jim Crossley [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 16:06 To: Struts Users Mailing List Subject: Re: ActionForm and default values It's pretty simple, I think. 1) The formbean is passed to the action's perform method by the Struts controller. 2) The action populates the formbean (ReportDataForm) from the value object (ReportData). 3) The action returns the appropriate ActionForm to render the view. 4) The view (ReportData.jsp) need look no more complicated than this: html:form action=/reportAction html:text property=reportName/ /html:form -- Jim Ian Beaumont [EMAIL PROTECTED] writes: This question seems to be going around and around this mailing list and no one has produced an answer. -Original Message- From: Dua, Amit [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 15:46 To: 'Struts Users Mailing List' Cc: '[EMAIL PROTECTED]' Subject: RE: ActionForm and default values But then how will I set the default values amit -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 10:36 AM To: Struts Users Mailing List Subject: Re: ActionForm and default values try removing the value= attribute from your html: text. hope that helps. --- Dua, Amit [EMAIL PROTECTED] wrote: Hi I want to populate my page with default value So, in order to do that I have a value object (ReportData), ReportDataForm (Form Bean) I populate the Value object through one of the Action classes and then do a Action Forward to one of the Jsp namely ReportData.jsp In the ReportData.jsp I do following ReportData reoportData = (ReportData)request.getAttribute(reportdata); html:form action=reportAction.do html:text property=reportName value=%=reportData.getReportName()%/ .. .. I do all the validation In ReportAction class which is mapped to reportAction.do But when there is an error In the field , I am not able to get the value populated for the text field. Is there something wrong I am doing. Or is there any other better way of doing this thing.. Amit -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __
action and form contract
On husted.com, Ted Husted wrote: Do not check for null ActionForm beans in your Actions If an Action expects an ActionForm bean, then its API contact with the ActionMappings should require that this bean, or a subclass, be named in the ActionMapping. The Actions contact wit the controller is that it will always instantiate the bean before the Action is called. If either contact is broken, the application should expose a null pointer exception so that the problem is fixed and the misunderstanding resolved. Whether an Action expects an ActionForm bean should be specified in its Javadoc. Now I'm wondering if 'contact' was a type and what he meant was 'contract', that is, in the sense of an API contract or implied constrain, pre-condition. (You out there Ted?) Anyway, this seems like a good idea. I'm always complaining that exceptions are often overused or misused in Java, and this seems like a good use: let the exception raise havoc, in order to inform you of a really exceptional condition, and one that should be exposed if it exists. Steve Carter Sr. Software Engineer Swift Rivers [EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
struts-example won't run
Subject: struts-example won't run From: Wendy S [EMAIL PROTECTED] === I've searched the mailing list archive but it didn't turn up anything like this. I've downloaded Struts and dropped the .war files in $TOMCAT_HOME/webapps. I also put xercesImpl.jar and xmlParserAPIs.jar in $TOMCAT_HOME/lib. Tomcat starts, and I can view struts-documentation, but when I point my browser at /struts-example, I get an error page: Error: 500 Location: /struts-example/logon.jsp Internal Servlet Error: javax.servlet.ServletException: cant remove Attributes from request scope Root cause: java.lang.IllegalArgumentException: cant remove Attributes from request scope Help! What could be causing this and how do I fix it? -- Wendy in Tempe, AZ -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: How do I init a Form bean via business logic?
As long as your reset method is coded properly, all of you values should be retained. Pre-populating from a bean does not break the MVC because that is exactly how you display dynamic data which is not in a form. I am doing this and it works fine for me. JC -Original Message- From: Ian Beaumont [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 3:10 AM To: 'Struts Users Mailing List' Subject: RE: How do I init a Form bean via business logic? I've been trying to get an answer to how to initialise a form bean from this list, but with no success. See Re: Can this be done at all using Form objects within struts fram ework The reason why I don't think you can pre-populate a form from the beam (other than possibly breaking MVC) is that if the form fails to validate correctly, when it is re-displayed it will wipe out all values the user has entered - which wouldn't be the desired behaviour. Can someone please give some guidance to the best practise for this initialising a form bean via business logic. -Original Message- From: Barr, Scott [IBM GSA] [mailto:[EMAIL PROTECTED]] Sent: 20 February 2002 03:27 To: 'Struts Users Mailing List' Subject: RE: How do I init a Form bean via business logic? The best reason I can give as to why you should use form objects, is that you will pretty much always provide String getter and setters, rather than the 'real' data object types. eg Timestamp -Original Message- From: Jakkampudi, ChandraseKhar [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 1:03 PM To: 'Struts Users Mailing List' Subject: RE: How do I init a Form bean via business logic? Scott, I need to clarify this further. I am not suggesting you do away with an action. You use the action to get the data that is required as a value object. Since this is a value object, it can be re-used to serve another client. Instead of creating a form bean in the action, you set the retrieved value object from your DAO as a bean in your request. Thus, you avoid additional mapping code like form.setValue(valueObject.getValue()) and so on. Then if need be, you pre-populate the form, or display the data outside of the form in the jsp as a table or what not. An instance of where this would be particularly useful. Let us say that some fields are not editable but are display only. (like your ID). Initializing the form in the action causes part of your display to be populated from the action while the rest is in the jsp. Your argument about jsp not creating and initialising objects is not true because that is exactly what jsp:useBean, bean:define and other tags (which is the right way to do things) do. Also, if you do not initialise a form in the action, or dont need to pre-fill data, the jsp IS the place where these objects are created. Nothing in what I suggested, implies that you need to catch errors and exceptions in the jsp. I agree with you that they shouldn't and with the approach I outlined they dont have to. All of this is done in the action. I am only asking about the additional step of creating the form bean which I think is not necessary. The action creates the Business Objects. You are right. But it does not NEED to create the Form objects. It can. But I cannot see an overriding reason why it SHOULD. Thanks JC -Original Message- From: Barr, Scott [IBM GSA] [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 7:47 PM To: 'Struts Users Mailing List' Subject: RE: How do I init a Form bean via business logic? 1. If you are doing something other than creating a new view component and allowing it to set its own default values, I would imagine that you are doing an Action. 2. No it doesn't break MVC if the Action initialises the Form. If an action cannot deal with a form, where exactly is this supposed to be performed? An Action populating a form object does not mean it requires knowing how the data will be presented, it is just data. What the jsp does with it is not the concern of the action. The Action does not care if property X is displayed as static text, or in a text field. The jsp is a presentation layer, and should not be creating and initialising objects. By the time you get to your presentation layer, you should not have to be catching errors, and redirecting to error pages etc. The Action creates business objects. These objects can throw exceptions. eg. error while getting a new ID from a database. If an error occurs, I add error to the errors, and this will be displayed... If you init a Form bean in a jsp, and an exception occurs, you must deal with it in the page. 3. What additional code? If your action deals with your business layer, but should not contain business logic itself. If it does, you cannot use your business object model to provide a different interface 4. I don't see that filling a jsp with debug code makes for easier
RE: sessions
so I take it that a redirect header doesn't count as a redirect? Have you worked without cookies? This is where it really has come up. -Original Message- From: keithBacon [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:10 AM To: Struts Users Mailing List Subject: RE: sessions I never had a problem with sessions or links. It's very straightforward. Struts deals with moving around inside 1 web-app using Forwards not Redirects. A session is always there for your jsp or Action class to use. Struts handles the user denying cookies - it automatically uses URL re-writing to store the sessionID on the client. Redirect is for going off to a different server or web-app which don't know anything about the session being left. If you want to pass data to the new location you have to park it somewhere else. So not being a super expert - really all I can assure you is it ought to be very simple for normal requirements. Hope that helps - Happy strutting - Keith. --- Bill Page [EMAIL PROTECTED] wrote: thanks for the response. I couldn't find it in the archives either. I'm pretty new to the server side java (been client side for the last 5 years), servlets and all that so I may have some basic misunderstandings. It looks to me like any anchors in the HTML result will need to have encodeURL or encodeRedirectURL applied to them. Looking at the struts code the ActionServlet, it looks like struts appends the session only if the redirect flag is on. I may also not understand the definition of URL rewriting here, but can not find a definition. If I'm always forwarding through struts using say success and failure how would I know to do anything? As I see it the beauty of the forwarding mechanism is that I don't have to know the destination in the action subclass. Yet if I'm understanding this, I'll lose the session id. I seem to keep it if I always set the redirect flag in the forward class, but I'm suspicious that that is not the correct way. To further complicate this, we're using a menu program to generate the javascript for a horizontal menu at the top. Looks like (and what I'm in the middle of doing now) I'll need to manually append ;jsessionid= in a javascript function and then do a location=. As we're both invoking jsp and *.do actions, I'm parsing to figure out whether to append the session or not. If I'm going through a lot of work for something that should be done another way, I'd love to know. -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 6:14 AM To: Struts Users Mailing List Subject: Re: sessions Hi Bill, This has been answered but I couldn't find the answer in the archive! I'm not the expert here but - it's when a new session is created. Struts doesn't know if the browser accepts cookies (where the session id is to be stored) so puts it in the URL (URL re-writing). On the next request struts knows the cookie is accepted so doesn't need to put the sessionId inthe URL. So every time you see that it's the symptom of a new session being created - no the cause. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
Just a question for those of you who knock EJBs... How is it that you plan to provide transaction management and security within your applications? Going straight to the database won't provide that for you. This whole debate makes me wonder how many people really understand Java and quality application design. I suggest that anyone with questions get themselves a copy of Pro JSP Site Design by Wrox. It might help. This debate has the potential to go on for a while... Sorry, but I just had to add my 2 cents. -Original Message- From: Vic Cekvenich [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 9:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
i believe that if you are using jboss as an app-server, you can shut off the ejb service and still have security and transaction management (not to mention, jndi, web application support, mail services, logging services, etc. etc.). my .2 added to your .2 --e-- On Wed, 20 Feb 2002 09:56:10 -0800, Carl Sziebert wrote: Just a question for those of you who knock EJBs... How is it that you plan to provide transaction management and security within your applications? Going straight to the database won't provide that for you. This whole debate makes me wonder how many people really understand Java and quality application design. I suggest that anyone with questions get themselves a copy of Pro JSP Site Design by Wrox. It might help. This debate has the potential to go on for a while... Sorry, but I just had to add my 2 cents. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: EJB = bad = MS.net
Subject: Re: EJB = bad = MS.net From: Vic Cekvenich [EMAIL PROTECTED] === Transaction: DBs have it; or you can have a Java Bean, that has 2 JavaBeans in it, and all have a commit() method. You use EJB for a commit()? Security? : -Menu based based on a role (using Struts-menu), some items are disabled based on your role. -JAAS JDBC Realms (I also get groupID) -Based groupID some rows retrieved / selected are editable, some RO and some invisible on your selects. It's called row based security. - Status based, based on a status of a row, some fileds become RO. EJBs give you 0 useful security. EJBs are also very slow to develop, and they distract developers to develop technology and not solve a business problems. They are also slow to execute, thus they are only suitable for small applications with low volume (and for organizations where a profit margin is not important or on going cost of operations is not important). THere are some with EJB and and some resumes with EJBs are by people who have written a laboratory hello world ejb and never actually used them in production deployed where there is volume. Custom RowSet can code circles around a large team of EJB developers. OK, its a Flame: I have a bridge for sale by a smooth talking sales guy, aka The emperor is not wearing any clothes. Vic Carl Sziebert wrote: Just a question for those of you who knock EJBs... How is it that you plan to provide transaction management and security within your applications? Going straight to the database won't provide that for you. This whole debate makes me wonder how many people really understand Java and quality application design. I suggest that anyone with questions get themselves a copy of Pro JSP Site Design by Wrox. It might help. This debate has the potential to go on for a while... Sorry, but I just had to add my 2 cents. -Original Message- From: Vic Cekvenich [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 9:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
The point of EJB security and transactions is to abstract those pieces to make them vendor neutral. If you write them correctly, you'll have your security/transactions on JBoss, Weblogic, Websphere, whatever. Sure EJB's have some additional overhead, but that is the price you pay for abstraction. This reminds me of the J2EE Pet Store vs. .Net Pet Store flare up a while back. Microsoft chose to execute most of their queries using stored procedures. Of course it was faster than using a pure Java approach. But they gave up all of the flexibility that Java offers. Similarly, if you use app server specific security, you will no doubt lose portability. I'm no fan of EJB, but IMO they have their place. Its up to the architect to decide what is best for their application and which trade-offs to make. dan On Wed, 2002-02-20 at 13:22, Edward Q. Bridges wrote: i believe that if you are using jboss as an app-server, you can shut off the ejb service and still have security and transaction management (not to mention, jndi, web application support, mail services, logging services, etc. etc.). my .2 added to your .2 --e-- On Wed, 20 Feb 2002 09:56:10 -0800, Carl Sziebert wrote: Just a question for those of you who knock EJBs... How is it that you plan to provide transaction management and security within your applications? Going straight to the database won't provide that for you. This whole debate makes me wonder how many people really understand Java and quality application design. I suggest that anyone with questions get themselves a copy of Pro JSP Site Design by Wrox. It might help. This debate has the potential to go on for a while... Sorry, but I just had to add my 2 cents. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- Dan Trevino bluemagnet, llc http://bluemagnet.com/ -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: ActionForm and default values
Ian Beaumont [EMAIL PROTECTED] writes: This means that in the action for the select item I need to get hold of the form bean for the next page I'm going to so I can populate it. You'll need to pass the ID of the selected item to the action. So your selection view will have something like this in it: logic:iterate id=item name=formBeanName property=items html:link page=/edit.do paramId=id paramName=item bean:write name=item /html:link /logic:iterate 1. How do I get hold of the form bean? Do I create it myself? No. The struts controller will create it and pass it to the perform method of an instance of the class identified by the type attribute in the /edit action in struts-config. That perform method will get the id parameter from the request, get the item's values from somewhere and populate the formbean. 2. This all relies on me knowing the mappings of what page I'm going to go to next so I can populate the form bean. This defeats the object of having the struts-XML file. Not exactly. You do have to know which action you're going to next, but struts-config allows you to change which classes and views are used to perform that action. And your action class obviously needs to know what kind of formbean to expect so that it can downcast it appropriately, but there's nothing stopping you from casting it to an interface or abstract class which the classes specified in struts-config must implement. You may need that level of polymorphic flexibility in your app, but from my experience you won't. Below is the text from a previous email I sent. The only reply I got was the example didn't show 'best practises'. In which case, what is the best practise. The example accounts for a missing name attribute in the corresponding action element in struts-config. The best practice is to include a name attribute in struts-config so that your action doesn't have to do that. -- Jim -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
How to set attribute via submit
Hi, I have a form with a couple of buttons. The form is submitted to a navigation action class that just looks at an action parameters and forwards the request. I want created a series of submit buttons with the same property but different values. If I set the value property of the tag then that is displayed as the text of the button. What I need to do is set the property and value of the button with a different String for the text displayed on the button. Any ideas? Thanks Alex -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
EJB = bad = MS.net
Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: Strange problem
Cheers Keith, It seems to be doing it somewhere in the struts framework, between the browser calling a do, and the framework calling an action. Is there any trace I can turn on? Cheers, Tim. -Original Message- From: keithBacon [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 3:53 PM To: Struts Users Mailing List; Tim Sawyer Subject: Re: Strange problem I loop if I set up struts-config so input=SelectParty.do when it should be SelectParty.jsp. But then you would see SelectPartyAction's perform method being executed your debug msg. Is it possible you have a more complex flow of control. Stick debug messages everywhere! --- Tim Sawyer [EMAIL PROTECTED] wrote: I'm using struts 1.0.1 with tomcat 3.2.1, and am encountering a wierd problem. I'm running an action to search for a list of people, and that completes fine. Then I can click on that person to select it and proceed to another page. However, clicking on the person hyperlink leads to java.exe taking 100% CPU and everything just sits there. The link looks like this: a href=/AddFindParty/SelectParty.do?ID=151975Ernie, Uncle /a br So as far as I can tell, the click on the do returns control to the controller servlet, which then keeps it and sits there burning cpu cycles. I have a debug statemement in the perform() method in the appropriate action handler for SelectParty.do and it doesn't get that far. I even commented out SelectParty in my struts-config.xml file, and it made absolutely no difference. Anyone got any ideas? I'm new to struts, but I got the first bit to work, and I can't understand why this doesn't. Cheers, Tim. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: sessions
so I take it that a redirect header doesn't count as a redirect? No idea. I never used a re-direct within struts. I guess if I specified redirect=true struts would put in the HTML exactly what you code manually in HTML. Have you worked without cookies? This is where it really has come up. No. I was never asked to. I guess struts works without them - it claims to. I also guess if you write fiddly odd things you increase risk of getting a problem. Sorry my experience is with fairly straightfoward use of the technology I've no complaints about that. K. --- Bill Page [EMAIL PROTECTED] wrote: so I take it that a redirect header doesn't count as a redirect? Have you worked without cookies? This is where it really has come up. -Original Message- From: keithBacon [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:10 AM To: Struts Users Mailing List Subject: RE: sessions I never had a problem with sessions or links. It's very straightforward. Struts deals with moving around inside 1 web-app using Forwards not Redirects. A session is always there for your jsp or Action class to use. Struts handles the user denying cookies - it automatically uses URL re-writing to store the sessionID on the client. Redirect is for going off to a different server or web-app which don't know anything about the session being left. If you want to pass data to the new location you have to park it somewhere else. So not being a super expert - really all I can assure you is it ought to be very simple for normal requirements. Hope that helps - Happy strutting - Keith. --- Bill Page [EMAIL PROTECTED] wrote: thanks for the response. I couldn't find it in the archives either. I'm pretty new to the server side java (been client side for the last 5 years), servlets and all that so I may have some basic misunderstandings. It looks to me like any anchors in the HTML result will need to have encodeURL or encodeRedirectURL applied to them. Looking at the struts code the ActionServlet, it looks like struts appends the session only if the redirect flag is on. I may also not understand the definition of URL rewriting here, but can not find a definition. If I'm always forwarding through struts using say success and failure how would I know to do anything? As I see it the beauty of the forwarding mechanism is that I don't have to know the destination in the action subclass. Yet if I'm understanding this, I'll lose the session id. I seem to keep it if I always set the redirect flag in the forward class, but I'm suspicious that that is not the correct way. To further complicate this, we're using a menu program to generate the javascript for a horizontal menu at the top. Looks like (and what I'm in the middle of doing now) I'll need to manually append ;jsessionid= in a javascript function and then do a location=. As we're both invoking jsp and *.do actions, I'm parsing to figure out whether to append the session or not. If I'm going through a lot of work for something that should be done another way, I'd love to know. -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 6:14 AM To: Struts Users Mailing List Subject: Re: sessions Hi Bill, This has been answered but I couldn't find the answer in the archive! I'm not the expert here but - it's when a new session is created. Struts doesn't know if the browser accepts cookies (where the session id is to be stored) so puts it in the URL (URL re-writing). On the next request struts knows the cookie is accepted so doesn't need to put the sessionId inthe URL. So every time you see that it's the symptom of a new session being created - no the cause. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/
RE: sessions
thanks for your time and responses. Maybe we'll jumping in too complicated too fast. My current theory is that this stuff should be handled but there may be some problems in JRun. I've seem what seem to be similar complaints in their forum. I was able to determine that even with cookies off in JRun and in my browswer that it was reporting that it was getting session info from a cookie which is one reason I'm currently suspicious of a JRun issue. Again thanks for your time bp -Original Message- From: keithBacon [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 2:17 PM To: Struts Users Mailing List Subject: RE: sessions so I take it that a redirect header doesn't count as a redirect? No idea. I never used a re-direct within struts. I guess if I specified redirect=true struts would put in the HTML exactly what you code manually in HTML. Have you worked without cookies? This is where it really has come up. No. I was never asked to. I guess struts works without them - it claims to. I also guess if you write fiddly odd things you increase risk of getting a problem. Sorry my experience is with fairly straightfoward use of the technology I've no complaints about that. K. --- Bill Page [EMAIL PROTECTED] wrote: so I take it that a redirect header doesn't count as a redirect? Have you worked without cookies? This is where it really has come up. -Original Message- From: keithBacon [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:10 AM To: Struts Users Mailing List Subject: RE: sessions I never had a problem with sessions or links. It's very straightforward. Struts deals with moving around inside 1 web-app using Forwards not Redirects. A session is always there for your jsp or Action class to use. Struts handles the user denying cookies - it automatically uses URL re-writing to store the sessionID on the client. Redirect is for going off to a different server or web-app which don't know anything about the session being left. If you want to pass data to the new location you have to park it somewhere else. So not being a super expert - really all I can assure you is it ought to be very simple for normal requirements. Hope that helps - Happy strutting - Keith. --- Bill Page [EMAIL PROTECTED] wrote: thanks for the response. I couldn't find it in the archives either. I'm pretty new to the server side java (been client side for the last 5 years), servlets and all that so I may have some basic misunderstandings. It looks to me like any anchors in the HTML result will need to have encodeURL or encodeRedirectURL applied to them. Looking at the struts code the ActionServlet, it looks like struts appends the session only if the redirect flag is on. I may also not understand the definition of URL rewriting here, but can not find a definition. If I'm always forwarding through struts using say success and failure how would I know to do anything? As I see it the beauty of the forwarding mechanism is that I don't have to know the destination in the action subclass. Yet if I'm understanding this, I'll lose the session id. I seem to keep it if I always set the redirect flag in the forward class, but I'm suspicious that that is not the correct way. To further complicate this, we're using a menu program to generate the javascript for a horizontal menu at the top. Looks like (and what I'm in the middle of doing now) I'll need to manually append ;jsessionid= in a javascript function and then do a location=. As we're both invoking jsp and *.do actions, I'm parsing to figure out whether to append the session or not. If I'm going through a lot of work for something that should be done another way, I'd love to know. -Original Message- From: Keith [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 6:14 AM To: Struts Users Mailing List Subject: Re: sessions Hi Bill, This has been answered but I couldn't find the answer in the archive! I'm not the expert here but - it's when a new session is created. Struts doesn't know if the browser accepts cookies (where the session id is to be stored) so puts it in the URL (URL re-writing). On the next request struts knows the cookie is accepted so doesn't need to put the sessionId inthe URL. So every time you see that it's the symptom of a new session being created - no the cause. -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] =
RE: EJB = bad = MS.net
EJBs are not bad in and of themselves, and certainly not for newbies. They are easy to misuse as a lot of people have, and therefore have a bad rep. Using good design patterns can help in a good EJB solution. They solve some problems, and yes create others. Also as mentioned on the JavaLobby website, J2EE is not spelled Eee Jay Bee. JSP, Servlets, JMS, and EJB all fall under the J2EE umbrella. Lest we forget that Tomcat is the reference implementation of the J2EE JSP/Servlet APIs... I've never been a big fan of J2EE security, but it IS abstracted away from the developer. The biggest help is in transactions, being declarative and in clustering the EJBs (yes I know you can cluster webservers and servlet containers, but the code runs in one VM as opposed to being _able_ to run across multiple in the same execution sequence). The alternative you suggest, Struts + Tomcat + RowSet, also has it's place, and is more akin to the way the M$ petstore is built (not the same, but more similar). I see no object model in the alternative, which is useful in many, many environments. Most public webapps probably don't need middleware, true. But in some corporate apps (not all but some) middleware is a really helpful thing. And saying that SOAP is Middleware, or a middleware alternative is like saying SOAP can replace EJB. It's just showing ignorance of the technology. SOAP is a communication mechanism like RMI, DCE, RPC, not a middleware mechanism like EJB, JMS, etc. I read the links posted, and in the one case it goes back to my earlier statement, misuse or misunderstanding of the technology. What EJB the right solution? Maybe not, then again it might have performed great if designed/built right. To blatantly disregard something as 'bad' doesn't help, and just sounds like Microsoft when they said their petstore was better than Sun's. It misses the point and says nothing. - Robert -Original Message- From: Vic Cekvenich [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
I STRONGLY disagree with this statement. We have been doing EJBs for 2 yrs at my shop. Our Order Entry system uses EJBs to capture customer orders in 36 cities (US) in every US timezone and we have had nothing but success. By the way there is NO reason to buy BEA weblogic unless you are running EJBs and don't trust JBOSS (which I do). Tomcat is much better at serving webpages the WLS or Websphere, EJBs are one of the cornerstones of J2EE, wake up Vic... -Original Message- From: Vic Cekvenich [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
Hmm. And this guy claims to be training other developers using Struts. If this is the kind of ranting that goes on in his book then its no longer a wonder to me why people have blasted it so mercilessly. Ever tried to do a distributed transaction across multiple database connections? Hard enough without substantial design even when they are all targeting the same physical database. Now try a distributed database. What if your enterprise data is coming from multiple sources? Or you want to involve messaging in the transaction? As for security, you can take it or leave it in the EJB model. But wouldn't be a good idea to design a single access point for such a resource to encapsulate the security policy? And wouldn't it be good for that policy to be declarative? And wouldn't you like the security credentials to be automatically propogated by the ORB? And wouldn't you like the roles to be retrieved from the same mechanism used to authenticate the user in the first place? And why would you write all that when it already exists? Granted, excessive use of EJB technology just because it is in your pocket is not a good design choice. But claiming it is always a bad choice regardless of circumstances is just as bad if not worse IMHO. Disputing the pros/cons of EJB and related technologies with someone who clearly does not appreciate the systemic issues the technologies are attempting to address is sorta like debating the benefits of MVC with one of those died-in-the-wool, you'll-never-change-my-mind, always-choose-the-most-expedient-route Model 1 programmers we've all run up against. They're so indoctrinated with their own BS that they just can't see anything else. Jim Cakalic -Original Message- From: Struts Newsgroup [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 12:25 PM To: [EMAIL PROTECTED] Subject: Re: EJB = bad = MS.net Subject: Re: EJB = bad = MS.net From: Vic Cekvenich [EMAIL PROTECTED] === Transaction: DBs have it; or you can have a Java Bean, that has 2 JavaBeans in it, and all have a commit() method. You use EJB for a commit()? Security? : -Menu based based on a role (using Struts-menu), some items are disabled based on your role. -JAAS JDBC Realms (I also get groupID) -Based groupID some rows retrieved / selected are editable, some RO and some invisible on your selects. It's called row based security. - Status based, based on a status of a row, some fileds become RO. EJBs give you 0 useful security. EJBs are also very slow to develop, and they distract developers to develop technology and not solve a business problems. They are also slow to execute, thus they are only suitable for small applications with low volume (and for organizations where a profit margin is not important or on going cost of operations is not important). THere are some with EJB and and some resumes with EJBs are by people who have written a laboratory hello world ejb and never actually used them in production deployed where there is volume. Custom RowSet can code circles around a large team of EJB developers. OK, its a Flame: I have a bridge for sale by a smooth talking sales guy, aka The emperor is not wearing any clothes. Vic Carl Sziebert wrote: Just a question for those of you who knock EJBs... How is it that you plan to provide transaction management and security within your applications? Going straight to the database won't provide that for you. This whole debate makes me wonder how many people really understand Java and quality application design. I suggest that anyone with questions get themselves a copy of Pro JSP Site Design by Wrox. It might help. This debate has the potential to go on for a while... Sorry, but I just had to add my 2 cents. -Original Message- From: Vic Cekvenich [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 9:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail:
Re: struts-example won't run
This is such a pain - it happens lots I have no easy answer. I found http://www.mail-archive.com/struts-user@jakarta.apache.org/msg19383.html http://www.mail-archive.com/struts-user@jakarta.apache.org/msg18817.html did you search for 'remove Attributes from request' I never had this error using jakarta-struts-1.0.zip jakarta-tomcat-3.2.2.zip on Windows 98. I bet .net doesn't stitch you up like this! Sorry i can't help more. --- Struts Newsgroup [EMAIL PROTECTED] wrote: Subject: struts-example won't run From: Wendy S [EMAIL PROTECTED] === I've searched the mailing list archive but it didn't turn up anything like this. I've downloaded Struts and dropped the .war files in $TOMCAT_HOME/webapps. I also put xercesImpl.jar and xmlParserAPIs.jar in $TOMCAT_HOME/lib. Tomcat starts, and I can view struts-documentation, but when I point my browser at /struts-example, I get an error page: Error: 500 Location: /struts-example/logon.jsp Internal Servlet Error: javax.servlet.ServletException: cant remove Attributes from request scope Root cause: java.lang.IllegalArgumentException: cant remove Attributes from request scope Help! What could be causing this and how do I fix it? -- Wendy in Tempe, AZ -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
Touché Jim. Touché... - Robert -Original Message- From: Cakalic, James [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 1:30 PM To: 'Struts Users Mailing List' Subject: RE: EJB = bad = MS.net Hmm. And this guy claims to be training other developers using Struts. If this is the kind of ranting that goes on in his book then its no longer a wonder to me why people have blasted it so mercilessly. Ever tried to do a distributed transaction across multiple database connections? Hard enough without substantial design even when they are all targeting the same physical database. Now try a distributed database. What if your enterprise data is coming from multiple sources? Or you want to involve messaging in the transaction? As for security, you can take it or leave it in the EJB model. But wouldn't be a good idea to design a single access point for such a resource to encapsulate the security policy? And wouldn't it be good for that policy to be declarative? And wouldn't you like the security credentials to be automatically propogated by the ORB? And wouldn't you like the roles to be retrieved from the same mechanism used to authenticate the user in the first place? And why would you write all that when it already exists? Granted, excessive use of EJB technology just because it is in your pocket is not a good design choice. But claiming it is always a bad choice regardless of circumstances is just as bad if not worse IMHO. Disputing the pros/cons of EJB and related technologies with someone who clearly does not appreciate the systemic issues the technologies are attempting to address is sorta like debating the benefits of MVC with one of those died-in-the-wool, you'll-never-change-my-mind, always-choose-the-most-expedient-route Model 1 programmers we've all run up against. They're so indoctrinated with their own BS that they just can't see anything else. Jim Cakalic -Original Message- From: Struts Newsgroup [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 12:25 PM To: [EMAIL PROTECTED] Subject: Re: EJB = bad = MS.net Subject: Re: EJB = bad = MS.net From: Vic Cekvenich [EMAIL PROTECTED] === Transaction: DBs have it; or you can have a Java Bean, that has 2 JavaBeans in it, and all have a commit() method. You use EJB for a commit()? Security? : -Menu based based on a role (using Struts-menu), some items are disabled based on your role. -JAAS JDBC Realms (I also get groupID) -Based groupID some rows retrieved / selected are editable, some RO and some invisible on your selects. It's called row based security. - Status based, based on a status of a row, some fileds become RO. EJBs give you 0 useful security. EJBs are also very slow to develop, and they distract developers to develop technology and not solve a business problems. They are also slow to execute, thus they are only suitable for small applications with low volume (and for organizations where a profit margin is not important or on going cost of operations is not important). THere are some with EJB and and some resumes with EJBs are by people who have written a laboratory hello world ejb and never actually used them in production deployed where there is volume. Custom RowSet can code circles around a large team of EJB developers. OK, its a Flame: I have a bridge for sale by a smooth talking sales guy, aka The emperor is not wearing any clothes. Vic Carl Sziebert wrote: Just a question for those of you who knock EJBs... How is it that you plan to provide transaction management and security within your applications? Going straight to the database won't provide that for you. This whole debate makes me wonder how many people really understand Java and quality application design. I suggest that anyone with questions get themselves a copy of Pro JSP Site Design by Wrox. It might help. This debate has the potential to go on for a while... Sorry, but I just had to add my 2 cents. -Original Message- From: Vic Cekvenich [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 9:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
Depends on the project size. -Original Message- From: Thompson, Darryl [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 2:28 PM To: Struts Users Mailing List Subject: RE: EJB = bad = MS.net I STRONGLY disagree with this statement. We have been doing EJBs for 2 yrs at my shop. Our Order Entry system uses EJBs to capture customer orders in 36 cities (US) in every US timezone and we have had nothing but success. By the way there is NO reason to buy BEA weblogic unless you are running EJBs and don't trust JBOSS (which I do). Tomcat is much better at serving webpages the WLS or Websphere, EJBs are one of the cornerstones of J2EE, wake up Vic... -Original Message- From: Vic Cekvenich [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
Ever tried to do a distributed transaction across multiple database connections? Hardly ever never needed them. When we did we wished for EJB's. I'd strongly recommend putting all your data on 1 big relational database so a transaction can be managed by it. This is far simpler than EJB's. Of course this isn't always possible - but you distribute data when you are forced to - not coz it's more high tech fun. Example - in the UK big companies buy a copy of the Post Office Address database some software to call in their systems. Hundreds of companies install the same software get regular database updates. Some time soon they'll just do an EJB call to a Post Office server - much better! Another example - online checking of credit details - 1 credit company services hundreds of users - code on it's server must be called from servers all over the place. These are a requirement of a minority of systems. I fear that over-use of EJB by people who aren't skilled/experienced enough is going to give java a bad name! Microsoft is gunning for us. Vic is mostly right - forget EJB's use them only if you are driven to it ie. there is a significant real requirement. If high volumes are required you will need to performance test your app have expert tuners available etc. Time for some-one to complain - this is off topic! PS I never used EJB's but looked into them recommended my company not use them I was right. --- Cakalic, James [EMAIL PROTECTED] wrote: Hmm. And this guy claims to be training other developers using Struts. If this is the kind of ranting that goes on in his book then its no longer a wonder to me why people have blasted it so mercilessly. Ever tried to do a distributed transaction across multiple database connections? Hard enough without substantial design even when they are all targeting the same physical database. Now try a distributed database. What if your enterprise data is coming from multiple sources? Or you want to involve messaging in the transaction? As for security, you can take it or leave it in the EJB model. But wouldn't be a good idea to design a single access point for such a resource to encapsulate the security policy? And wouldn't it be good for that policy to be declarative? And wouldn't you like the security credentials to be automatically propogated by the ORB? And wouldn't you like the roles to be retrieved from the same mechanism used to authenticate the user in the first place? And why would you write all that when it already exists? Granted, excessive use of EJB technology just because it is in your pocket is not a good design choice. But claiming it is always a bad choice regardless of circumstances is just as bad if not worse IMHO. Disputing the pros/cons of EJB and related technologies with someone who clearly does not appreciate the systemic issues the technologies are attempting to address is sorta like debating the benefits of MVC with one of those died-in-the-wool, you'll-never-change-my-mind, always-choose-the-most-expedient-route Model 1 programmers we've all run up against. They're so indoctrinated with their own BS that they just can't see anything else. Jim Cakalic -Original Message- From: Struts Newsgroup [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 12:25 PM To: [EMAIL PROTECTED] Subject: Re: EJB = bad = MS.net Subject: Re: EJB = bad = MS.net From: Vic Cekvenich [EMAIL PROTECTED] === Transaction: DBs have it; or you can have a Java Bean, that has 2 JavaBeans in it, and all have a commit() method. You use EJB for a commit()? Security? : -Menu based based on a role (using Struts-menu), some items are disabled based on your role. -JAAS JDBC Realms (I also get groupID) -Based groupID some rows retrieved / selected are editable, some RO and some invisible on your selects. It's called row based security. - Status based, based on a status of a row, some fileds become RO. EJBs give you 0 useful security. EJBs are also very slow to develop, and they distract developers to develop technology and not solve a business problems. They are also slow to execute, thus they are only suitable for small applications with low volume (and for organizations where a profit margin is not important or on going cost of operations is not important). THere are some with EJB and and some resumes with EJBs are by people who have written a laboratory hello world ejb and never actually used them in production deployed where there is volume. Custom RowSet can code circles around a large team of EJB developers. OK, its a Flame: I have a bridge for sale by a smooth talking sales guy, aka The emperor is not wearing any clothes. Vic Carl Sziebert wrote: Just a question for those of you who knock EJBs... How is it that you plan to provide transaction management and security within your
submitting with link
Hi
Iam unable to submit a form using a link
function fna()
{
alert(document.forms[0].name);
document.forms[0].submit ;
}
html:link href=javascript:fna()click/html:link
No error is generated , but the screen simply does not move to the location defined in
struts.config .
Instead , html:link page=/convert.do?name=aasfsdfsfsfsdf /html:link works but
iam unable to assign values to hidden variables .
Thanks ,
Regards,
Syed Niaz
--
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Re: EJB = bad = MS.net
Subject: Re: EJB = bad = MS.net From: Vic Cekvenich [EMAIL PROTECTED] === more flame I just agreed with what was on the home page of Jakarta. EJB / smejb. I am not talking about hello world ejbs. Those are features you list. To many features is sort of like building a submarine that is also a law mower. A distributed database? Nice features theoretically. In practice KISS. Elegant is more flexible, complex is just complex. We can all have a different opinion. I think the CW is use EJB sometimes, not all the time. I would use it less, you would use it more. (Every one of my class reviews by every students is posted publicly at news.basebeans.com) Cakalic, James wrote: Hmm. And this guy claims to be training other developers using Struts. If this is the kind of ranting that goes on in his book then its no longer a wonder to me why people have blasted it so mercilessly. Ever tried to do a distributed transaction across multiple database connections? Hard enough without substantial design even when they are all targeting the same physical database. Now try a distributed database. What if your enterprise data is coming from multiple sources? Or you want to involve messaging in the transaction? As for security, you can take it or leave it in the EJB model. But wouldn't be a good idea to design a single access point for such a resource to encapsulate the security policy? And wouldn't it be good for that policy to be declarative? And wouldn't you like the security credentials to be automatically propogated by the ORB? And wouldn't you like the roles to be retrieved from the same mechanism used to authenticate the user in the first place? And why would you write all that when it already exists? Granted, excessive use of EJB technology just because it is in your pocket is not a good design choice. But claiming it is always a bad choice regardless of circumstances is just as bad if not worse IMHO. Disputing the pros/cons of EJB and related technologies with someone who clearly does not appreciate the systemic issues the technologies are attempting to address is sorta like debating the benefits of MVC with one of those died-in-the-wool, you'll-never-change-my-mind, always-choose-the-most-expedient-route Model 1 programmers we've all run up against. They're so indoctrinated with their own BS that they just can't see anything else. Jim Cakalic -Original Message- From: Struts Newsgroup [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 12:25 PM To: [EMAIL PROTECTED] Subject: Re: EJB = bad = MS.net Subject: Re: EJB = bad = MS.net From: Vic Cekvenich [EMAIL PROTECTED] === Transaction: DBs have it; or you can have a Java Bean, that has 2 JavaBeans in it, and all have a commit() method. You use EJB for a commit()? Security? : -Menu based based on a role (using Struts-menu), some items are disabled based on your role. -JAAS JDBC Realms (I also get groupID) -Based groupID some rows retrieved / selected are editable, some RO and some invisible on your selects. It's called row based security. - Status based, based on a status of a row, some fileds become RO. EJBs give you 0 useful security. EJBs are also very slow to develop, and they distract developers to develop technology and not solve a business problems. They are also slow to execute, thus they are only suitable for small applications with low volume (and for organizations where a profit margin is not important or on going cost of operations is not important). THere are some with EJB and and some resumes with EJBs are by people who have written a laboratory hello world ejb and never actually used them in production deployed where there is volume. Custom RowSet can code circles around a large team of EJB developers. OK, its a Flame: I have a bridge for sale by a smooth talking sales guy, aka The emperor is not wearing any clothes. Vic Carl Sziebert wrote: Just a question for those of you who knock EJBs... How is it that you plan to provide transaction management and security within your applications? Going straight to the database won't provide that for you. This whole debate makes me wonder how many people really understand Java and quality application design. I suggest that anyone with questions get themselves a copy of Pro JSP Site Design by Wrox. It might help. This debate has the potential to go on for a while... Sorry, but I just had to add my 2 cents. -Original Message- From: Vic Cekvenich [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 9:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just
RE: Struts support for body background image??
In that case, I'd recommend using a forward to define the path then using html:rewrite forward=name to do this. HTH, Matt --- Greg Hess [EMAIL PROTECTED] wrote: Matt, I am following Ted's struts-stub example and using a directory structure within WEB-INF to hold all my pages(jsp, html). I like this approach as it forces all requests for my pages to go threw the ActionServlet(controller) and also protects all my pages from unauthorized access. I can do all my login checks in the Action an be assured no one will be able to bookmark a page. I feel my web applications are different than my web site. The web site has static pages and can allow the visitor to traverse the site any way he/she wishes. The web application is a controlled sequence of processes, generally each page has data requirements that must be met, I don't want my clients to be able to access the pages out of turn. So my images cannot reside within the WEB-INF dir and I am required to supply a context path instead of a relative path. Greg -Original Message- From: Matt Raible [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 3:19 PM To: Struts Users Mailing List Subject: Re: Struts support for body background image?? why not just use a relative path images/background.gif and put images in the same directory as your JSPs? Or you could use CSS to set this. Matt --- Jim Crossley [EMAIL PROTECTED] wrote: The only problem with that is that you have to account for your context path somewhere, and you probably shouldn't do that in your resources properties file. You'd have to do something like this: body background=%=request.getContextPath()%bean:message key='mybackground'/ Kinda gross, huh? Maybe there should be a struts html:body tag? -- Jim Low, Liang [EMAIL PROTECTED] writes: I'll just do this body background=bean:message key=mybackground and have mybackground refers to /images/background.jpg in ApplicationResource.properties Liang -Original Message- From: Greg Hess [mailto:[EMAIL PROTECTED]] Sent: Tuesday, February 19, 2002 11:25 AM To: Struts Mail List Subject: Struts support for body background image?? Hi All, I would like to avoid writing a scriplet in my jsp to provide a background image. body background=%=request.getContextPath()%/images/background.jpg Does anyone know an alternate solution, or if Struts plans to provide a html:body tag in the future? Thanks, Greg -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
Depends on the project requirements. Transactions across multiple data sources being a big one. Large and scalable being another. ...what are the others? Although his words say something different, maybe Vic is arguing that MS does this better/easier/cheaper than J2EE -- not that J2EE is fundamentally bad. James. -Original Message- From: Pu Huang [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:37 AM To: 'Struts Users Mailing List' Subject: RE: EJB = bad = MS.net Depends on the project size. -Original Message- From: Thompson, Darryl [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 2:28 PM To: Struts Users Mailing List Subject: RE: EJB = bad = MS.net I STRONGLY disagree with this statement. We have been doing EJBs for 2 yrs at my shop. Our Order Entry system uses EJBs to capture customer orders in 36 cities (US) in every US timezone and we have had nothing but success. By the way there is NO reason to buy BEA weblogic unless you are running EJBs and don't trust JBOSS (which I do). Tomcat is much better at serving webpages the WLS or Websphere, EJBs are one of the cornerstones of J2EE, wake up Vic... -Original Message- From: Vic Cekvenich [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
Well done congratulations - I suspect you guys are a good quality outfit! My criticism of EJB mostly is extrapolated from looking at legacy client server systems where new technology was rushed into by zealots left horrible problems for years. Did you use them because you needed distributed database or for other reasons? K. --- Thompson, Darryl [EMAIL PROTECTED] wrote: I STRONGLY disagree with this statement. We have been doing EJBs for 2 yrs at my shop. Our Order Entry system uses EJBs to capture customer orders in 36 cities (US) in every US timezone and we have had nothing but success. By the way there is NO reason to buy BEA weblogic unless you are running EJBs and don't trust JBOSS (which I do). Tomcat is much better at serving webpages the WLS or Websphere, EJBs are one of the cornerstones of J2EE, wake up Vic... -Original Message- From: Vic Cekvenich [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject:EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] = ~~ Search the archive:- http://www.mail-archive.com/struts-user%40jakarta.apache.org/ ~~ Keith Bacon - Looking for struts work - South-East UK. phone UK 07960 011275 __ Do You Yahoo!? Yahoo! Sports - Coverage of the 2002 Olympic Games http://sports.yahoo.com -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Business logic beans
The Struts User's Guide suggests that business logic be encapsulated in beans. Business logic modules are generally stateless, so one would generally implement them as static utility classes (with only static methods) or singletons (with private constructors and static factory methods), neither of which can be beans (which, by definition, have public constructors). To effectively manage stateless classes as beans (without re-instantiating them for each use), one would have to implement a lookup/mapping mechanism (an EJB-lite). Are the Struts developers suggesting that we develop such mechansisms? Might such a mechanism be slated for a future version of Struts? -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: submitting with link
You need to make the submit a method call.
document.forms[0].submit();
bsr
-Original Message-
From: Syed Niaz [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 20, 2002 8:51 AM
To: Struts Users Mailing List
Subject: submitting with link
Hi
Iam unable to submit a form using a link
function fna()
{
alert(document.forms[0].name);
document.forms[0].submit ;
}
html:link href=javascript:fna()click/html:link
No error is generated , but the screen simply does not move to the
location defined in struts.config .
Instead , html:link page=/convert.do?name=aasfsdfsfsfsdf
/html:link works but iam unable to assign values to hidden variables .
Thanks ,
Regards,
Syed Niaz
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Re: EJB = bad = MS.net
Subject: Re: EJB = bad = MS.net From: Vic Cekvenich [EMAIL PROTECTED] === Let me clarify and then do some paid work back here. 1.I think ejbs are not scalable relative to other Java API. 2. I do not want majority of market to go to MS.net. That is why I wish that more J2EE projects are successful. (And hence I say use EJB sometimes, not always, and consider the pros and cons.) Maybe PHBs like EJBs, I don't; and that is my opinion, but maybe not politically correct. Vic Couball, James wrote: Depends on the project requirements. Transactions across multiple data sources being a big one. Large and scalable being another. ...what are the others? Although his words say something different, maybe Vic is arguing that MS does this better/easier/cheaper than J2EE -- not that J2EE is fundamentally bad. James. -Original Message- From: Pu Huang [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:37 AM To: 'Struts Users Mailing List' Subject: RE: EJB = bad = MS.net Depends on the project size. -Original Message- From: Thompson, Darryl [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 2:28 PM To: Struts Users Mailing List Subject: RE: EJB = bad = MS.net I STRONGLY disagree with this statement. We have been doing EJBs for 2 yrs at my shop. Our Order Entry system uses EJBs to capture customer orders in 36 cities (US) in every US timezone and we have had nothing but success. By the way there is NO reason to buy BEA weblogic unless you are running EJBs and don't trust JBOSS (which I do). Tomcat is much better at serving webpages the WLS or Websphere, EJBs are one of the cornerstones of J2EE, wake up Vic... -Original Message- From: Vic Cekvenich [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: EJB = bad = MS.net
Vic's points are actually becoming quite mainstream, but he gets a big shiny apple for making himself such a big target. Many people, including serious dudes, have said the same thing, perhaps in a smoother way. When discussing adding an EJB module to webAppWriter, and one senior Sun engineer who shall go un-named suggested to pursue all other pieces first. Everybody is moving away from EJB's right now is I think the direct quote. Even critics say that there is always a use for EJB's, if not as wide as some might have initially presumed. Struts Newsgroup (@Basebeans.com) wrote: Subject: Re: EJB = bad = MS.net From: Vic Cekvenich [EMAIL PROTECTED] === Let me clarify and then do some paid work back here. 1.I think ejbs are not scalable relative to other Java API. 2. I do not want majority of market to go to MS.net. That is why I wish that more J2EE projects are successful. (And hence I say use EJB sometimes, not always, and consider the pros and cons.) Maybe PHBs like EJBs, I don't; and that is my opinion, but maybe not politically correct. Vic Couball, James wrote: Depends on the project requirements. Transactions across multiple data sources being a big one. Large and scalable being another. ...what are the others? Although his words say something different, maybe Vic is arguing that MS does this better/easier/cheaper than J2EE -- not that J2EE is fundamentally bad. James. -Original Message- From: Pu Huang [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:37 AM To: 'Struts Users Mailing List' Subject: RE: EJB = bad = MS.net Depends on the project size. -Original Message- From: Thompson, Darryl [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 2:28 PM To: Struts Users Mailing List Subject: RE: EJB = bad = MS.net I STRONGLY disagree with this statement. We have been doing EJBs for 2 yrs at my shop. Our Order Entry system uses EJBs to capture customer orders in 36 cities (US) in every US timezone and we have had nothing but success. By the way there is NO reason to buy BEA weblogic unless you are running EJBs and don't trust JBOSS (which I do). Tomcat is much better at serving webpages the WLS or Websphere, EJBs are one of the cornerstones of J2EE, wake up Vic... -Original Message- From: Vic Cekvenich [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: struts-example won't run
Subject: Re: struts-example won't run From: Wendy S [EMAIL PROTECTED] === I wrote about an error with struts-example: Error: 500 Location: /struts-example/logon.jsp Internal Servlet Error: javax.servlet.ServletException: cant remove Attributes from request scope Root cause: java.lang.IllegalArgumentException: cant remove Attributes from request scope keithBacon [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... This is such a pain - it happens lots I have no easy answer. I found http://www.mail-archive.com/struts-user@jakarta.apache.org/msg19383.html http://www.mail-archive.com/struts-user@jakarta.apache.org/msg18817.html (Is top posting preferred here?) Okay, I've downloaded the source and based on those two postings, have edited the doEndTag method in FormTag. Can someone walk me through what to do next? I'm sure I need to compile that class again. But how do I get the new .class file into the struts.jar file? I usually just download, configure, and have at the examples... I've never had to change source code before. Thanks for your help, -- Wendy -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: struts-example won't run
I had the same problem too - and I didn't have to change any source code. I just reinstalled tomcat and all my troubles were gone. It just worked without any changes. I downloaded tomcat version 3.3a. Subhadra -Original Message- From: Struts Newsgroup [mailto:@[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 12:25 PM To: [EMAIL PROTECTED] Subject: Re: struts-example won't run Subject: Re: struts-example won't run From: Wendy S [EMAIL PROTECTED] === I wrote about an error with struts-example: Error: 500 Location: /struts-example/logon.jsp Internal Servlet Error: javax.servlet.ServletException: cant remove Attributes from request scope Root cause: java.lang.IllegalArgumentException: cant remove Attributes from request scope keithBacon [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... This is such a pain - it happens lots I have no easy answer. I found http://www.mail-archive.com/struts-user@jakarta.apache.org/msg19383.html http://www.mail-archive.com/struts-user@jakarta.apache.org/msg18817.html (Is top posting preferred here?) Okay, I've downloaded the source and based on those two postings, have edited the doEndTag method in FormTag. Can someone walk me through what to do next? I'm sure I need to compile that class again. But how do I get the new .class file into the struts.jar file? I usually just download, configure, and have at the examples... I've never had to change source code before. Thanks for your help, -- Wendy -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
Even if all the data is in a single physical RDBMS instance, your design has to take one of several paths to deal with transactional issues. The first path is to ignore transactions. Just pretend like those pesky suckers don't even exist. Get a connection, leave it in autocommit mode, do what you want, hope everything works. Partial updates? That's why we have a DBA, isn't it? The second path would be to recognize that there are transactional concerns which must be addressed. The simplest way to address this, I suppose, is to get a connection, disable autocommit, and proceed to execute a big in-line blob of code to perform the necessary database operations. Assuming there are not problems, commit. Of course, I'd expect to see a good bit of duplicate code throughout your application. Another alternative is to actually have a persistence layer that encapsulates access to the database. One common approach is to have a manager class for each table. So you could still get a connection, turn off autocommit, and start passing it around to all the manager classes that want to manipulate the database so that they all do so across a single connection. Better though, would be to permit these managers to get a connection the connection from a common source. Maybe a thread-based resource manager that would hand out the same connection repeatedly until it was removed. Your 'controller' class would then coordinate the transaction by getting a connection, turn off autocommit, associating it with the thread-based resource manager, call on table managers and other components to do their jobs, and at the end, get the connection back from the resource manager and commit or rollback as necessary. Another path similar to the above would be possible when your database drivers are XA-compliant. Then you could a connection from wherever and use the XA capabilities of the drivers to enlist it in the global transaction. Of course, now you've distributed the responsibility for transaction management all over the place. You'd really want to write some kind of connection pool class that would encapsulate the details of this for you as they are not trivial. Not likely to be very performant either, getting all those different database connections. And in both this case, and the case abbove, you'd really want to prevent someone circumventing the transaction management by calling commit or rollback on the connection being used. This should really be disallowed. Finally, one might take a look at some of the above and realize, Geez! I just set out to design a transaction manager that already exists in my EJB-compliant application server. Maybe I should just use it and get the benefits of container-managed distributed transactions straight out of the box. Frankly, this is the approach my team is taking. We've done entity beans -- quite a few actually applying best practices and patterns from Sun, IBM, and community resources like theServerSide.com -- and decided that they really weren't the way for us to go. But we haven't abandoned EJB, either. Instead, we've adopted a command pattern in which reusable units of business logic are encapsulated in classes that follow a common implementation pattern. All our data access is being done through manager classes that use direct JDBC (we autogenerate these using a tool based on sql2java). We set up a DataSource pool in our application server that provides JTA-enabled connections to our Oracle database. When commands are instantiated and executed, they are 'sent' to a stateless session bean for execution. That bean's executeCommand method has been configured with transaction attributes of Required/ReadCommitted. If a transaction is not already in progress, one is started by the container when the method is called. If a transaction is in progress (commands can call other commands, of course) then the transaction will be joined. Since the same application server that manages the transactions is managing the connection pool, it hands out the same database connection to everyone requesting a connection using the same connection parameters. One database, one connection for the transaction. Really, the only code we had to write to deal with transactions was in the stateless session bean. It catches all exceptions thrown out of the command it was asked to execute and calls the EJBContext setRollbackOnly method to ensure the transaction is rolled back. Otherwise, the container takes care of the commit regardless of the level of nesting of command executions. IBM WebSphere provided the majority of the command framework implementation that we are using. But their implementation isn't anything special which couldn't be developed elsewhere. If you'd like to know more about it, here are some links: http://www-106.ibm.com/developerworks/ibm/library/i-extreme13/ http://www-4.ibm.com/software/webservers/appserv/doc/v40/ae/apidocs/com/ibm/ websphere/command/package-summary.html -Original Message-
How Do I trigger an actionForm reset from an Action
Hi, Could someone give a code snippet that I can use to invoke the reset method on an actionForm from my Action code? Thanks, Phil -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: EJB = bad = MS.net
Boy, you'd think it was Friday! Cheers! Mark -Original Message- From: Pete Carapetyan [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 3:25 PM To: Struts Users Mailing List Subject: Re: EJB = bad = MS.net Vic's points are actually becoming quite mainstream, but he gets a big shiny apple for making himself such a big target. Many people, including serious dudes, have said the same thing, perhaps in a smoother way. When discussing adding an EJB module to webAppWriter, and one senior Sun engineer who shall go un-named suggested to pursue all other pieces first. Everybody is moving away from EJB's right now is I think the direct quote. Even critics say that there is always a use for EJB's, if not as wide as some might have initially presumed. Struts Newsgroup (@Basebeans.com) wrote: Subject: Re: EJB = bad = MS.net From: Vic Cekvenich [EMAIL PROTECTED] === Let me clarify and then do some paid work back here. 1.I think ejbs are not scalable relative to other Java API. 2. I do not want majority of market to go to MS.net. That is why I wish that more J2EE projects are successful. (And hence I say use EJB sometimes, not always, and consider the pros and cons.) Maybe PHBs like EJBs, I don't; and that is my opinion, but maybe not politically correct. Vic Couball, James wrote: Depends on the project requirements. Transactions across multiple data sources being a big one. Large and scalable being another. ...what are the others? Although his words say something different, maybe Vic is arguing that MS does this better/easier/cheaper than J2EE -- not that J2EE is fundamentally bad. James. -Original Message- From: Pu Huang [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:37 AM To: 'Struts Users Mailing List' Subject: RE: EJB = bad = MS.net Depends on the project size. -Original Message- From: Thompson, Darryl [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 2:28 PM To: Struts Users Mailing List Subject: RE: EJB = bad = MS.net I STRONGLY disagree with this statement. We have been doing EJBs for 2 yrs at my shop. Our Order Entry system uses EJBs to capture customer orders in 36 cities (US) in every US timezone and we have had nothing but success. By the way there is NO reason to buy BEA weblogic unless you are running EJBs and don't trust JBOSS (which I do). Tomcat is much better at serving webpages the WLS or Websphere, EJBs are one of the cornerstones of J2EE, wake up Vic... -Original Message- From: Vic Cekvenich [SMTP:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:42 AM To: Struts Users Mailing List Cc: [EMAIL PROTECTED] Subject: EJB = bad = MS.net Home page of Jakarta has this http://jakarta.apache.org/site/news.html#0130.2 on this: http://www.mail-archive.com/general%40jakarta.apache.org/msg03376.html I agree. Doing EJBs is bad on many levels and creates more problems. Avoid EJB if you want to stay in Java. Alternative is to just use Struts + TomCat + RowSet (or DAO if you are doing something simple or small) and done. This is the sweet spot. MVC is all you need. Alternative, do EJBs and your organization WILL switch to MS .NET on the next project, leave J2EE, and you have to learn VB.net. EJBs are for newbies. (If you need middleware (very rare) use SOAP) lol, Vic -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: Business logic beans
Perhaps the term business logic is misleading to an extent. To some, business logic in JavaBeans can mean that a JavaBean is a stateful representation of data in a database, that also has 'logic' in it for other means, such as validation, computation, etc. The term used like you suggest would fit in a model like stateless session beans, although something could be developed that isn't EJB. Now you mention a lookup/mapping mechanism, well look at Avalon (http://jakarta.apache.org/avalon). It has just such a mechanism. I believe in using both approaches, using beans as data and logic as well as stateless logic components. We use both for our eQ! product and (slowly) I'm convincing others that we should build it upon Avalon. Our Struts adapters and our scripting engine (both of which I wrote) use Avalon for looking up other components. I'm trying to convince the boss to let me port our persistence layer to use the same framework. - Robert -Original Message- From: Daniel Steinberg [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 12:06 PM To: '[EMAIL PROTECTED]' Subject: Business logic beans The Struts User's Guide suggests that business logic be encapsulated in beans. Business logic modules are generally stateless, so one would generally implement them as static utility classes (with only static methods) or singletons (with private constructors and static factory methods), neither of which can be beans (which, by definition, have public constructors). To effectively manage stateless classes as beans (without re-instantiating them for each use), one would have to implement a lookup/mapping mechanism (an EJB-lite). Are the Struts developers suggesting that we develop such mechansisms? Might such a mechanism be slated for a future version of Struts? -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED] -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: How Do I trigger an actionForm reset from an Action
[EMAIL PROTECTED] writes:
Could someone give a code snippet that I can use to invoke
the reset method on an actionForm from my Action code?
public class YourAction extends Action
{
public ActionForward perform(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws ServletException
{
form.reset(mapping, request);
return mapping.findForward(success);
}
}
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Html:file - practical question
Hi, I'm using a html:file object. It works fine but when my form returns with Validation errors, he always looses the value of the file path. The user always have to select at new the file which ... Is there a solution ? thanks kind regards, Christoph Rooms Technical Account Manager SilverStream Software +32 475 531 529 -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
RE: where download struts javadoc?
Not sure, but you could download the source code and generate the javadoc from that. -Original Message- From: Struts Newsgroup [mailto:@[EMAIL PROTECTED]] Sent: Wednesday, 20 February 2002 7:55 PM To: [EMAIL PROTECTED] Subject: where download struts javadoc? Subject: where download struts javadoc? From: zb cong [EMAIL PROTECTED] === hello where can i download struts javadoc? i only find the online version on apache website . -- To unsubscribe, e-mail: mailto:[EMAIL PROTECTED] For additional commands, e-mail: mailto:[EMAIL PROTECTED]
Re: How to set attribute via submit
same property but different values. If I set the value property of the tag
then that is displayed as the text of the button. What I need to do is set
the property and value of the button with a different String for the text
displayed on the button.
Hi Alex,
This is quite hard to achieve because the way Http POST works. When you click
on the submit button, the request object contains the following pair:
button name, button text
There are several workarounds to find out which button you click on the form.
But the easiest way is to declare a setter method on your form that matches
the button name and in that setter method you set a variable in your form to
identify which button that the user selects.
IE:
public void setButtonDelete(String ignore) {
action = DELETE_ACTION;
}
public void perform(...) {
switch (form.getAction())
{
case DELETE_ACTION:
...
}
}
If your buttons MUST have all the same name, then the only way to do this is
for your form bean to know the list of the button labels and sets the action
accordingly.
HTH,
--
Victor Hadianto
---
He who laughs, lasts.
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