Re: Correct Prepopulate Method
Is what I am doing calling JSP pages directly? From my struts-config below I show them being mapped to Actions. My question was that I have to set the html:form action to be the calling Action in order to populate it, but I want it to submit to a different page, and if I follow the Apache struts example as below, it doesn't follow correctly. Ollie wrote: We NEVER call jsp pages directly. We use actions to show the jsp and actions to save the data from the forms and then the forward from the save goes to the show action. That way we control how the ActionForm object is populated with different actions for new form and edit forms. The same save actions then work either way. -Original Message- From: Nic Werner <[EMAIL PROTECTED]> Date: Sun, 13 Mar 2005 18:13:05 To:Struts Users Mailing List Subject: Re: Correct Prepopulate Method Okay, from the FAQ: * Both the |/editRegistration| and |/saveRegistration| actions use the same form bean. * When the |/editRegistration| action is entered, Struts will have pre-created an empty form bean instance, and passed it to the |execute()| method. The setup action is free to preconfigure the values that will be displayed when the form is rendered, simply by setting the corresponding form bean properties. * When the setup action completes configuring the properties of the form bean, it should return an |ActionForm| that points at the page which will display this form. If you are using the Struts JSP tag library, the |action| attribute on your tag will be set to |/saveRegistration| in order for the form to be submitted to the processing action. - The only way for my form to pre-populate from the 'editRegistration' page is to set my html:form action to the 'editRegistration'. However, I can't submit to 'saveRegistration' then! Maybe I'm doing this incorrectly: the first page loads the data from the DB, and then forwards to a JSP, which displays that data using HTML:FORM. Upon submit, it should go to the second page, which saves the data. Am I missing something? - Nic. My struts-config: type="com.racquetclub.action.UserEditAction" name="user"> type="com.racquetclub.action.UserUpdateAction" name="user"> Jesse Clark wrote: Joel, Here is a short description from the FAQ that starts to describe the alternative that Jack mentioned below: http://struts.apache.org/faqs/newbie.html#prepopulate. This approach basically means that you end up with two actions per form/jsp which will increase your maintenance work a little but it provides clean entry points into the work flow and clearly illustrates what responsibilities an action has by its naming scheme. In the FAQ their example actions are called /editFoo and /saveFoo but when I use this approach I usually name my action DisplayFooAction and ProcessFooAction where Foo indicates the primary function of the jsp/form that these actions handle, i.e DisplayEditProfileAction and ProcessEditProfileAction for my editProfile.jsp and EditProfileForm. Then the DisplayFooAction is responsible for gathering the data needed to prepopulate the Form from the business service, populating the Form and placing it in scope for the jsp. I request that a business service prepare the View necessary for the Foo page and then either, populate the Form from POJOs in the view or use collections from the view directly in the jsp to populate drop-down lists & etc. The Form is already available to you in the Action because it is declared in the action mapping for both the DisplayFoo and ProcessFoo actions. Just to qualify my advice, I am still relatively new to this myself and this approach seemed like the simplest way to go for now, but I kinda feel like having 2 actions per page might end up being too much extra baggage and there might be other implications of which I am not yet aware. Hope this helps, anyhow, -Jesse Schuster Joel M Contr ESC/NDC wrote: Ok, I understand. I'm just really trying to understand this. http://resonus.net/wiki/uploads/strutsq.jpg Here's a link to a little picture that I put together because that happens to be how I think. Please tell me what I'm missing in my understanding of what struts is all about. 1. Standard login process. a) request to website from browser, we redirect to the login.jsp via an action or forward. b) Submit is clicked and system encapsulates the data from the request into a form which is then given to the action.execute which c) then determines if the values are correct and forwards to the right place depending. 2. Now, If I want to have the main menu simply go from one screen to another then I have a link. But the second screen needs to be 'populated' (for lack of a better word) with data. 3. To do it the struts 'way' is to link to an action instead. This action fills the framework
Re: session and request scope
On Thu, 10 Mar 2005 23:56:08 +0100, Günther Wieser <[EMAIL PROTECTED]> wrote: > as long as you don't have a clustered environment or session persistence > enabled in your servlet container, there shouldn't be much difference in > adding an object to a session or request. That is almost, but not quite, accurate. The physical act of storing and retrieving the object into request scope or session scope can have a minor performance difference (in request scope, the container doesn't have to synchronize because it knows only one thread is accessing the underlying HashMap). The more important issue, though, is that session scope attributes will occupy memory space in between HTTP requests (request scope attributes become eligible for garbage collection as soon as the request completes) -- that's fine if you need the underlying information, but flagrantly wasteful if you do not. On apps with lots of users, this can become a mission critical issue. For a developer, though, you should train yourself to good habits in the first place -- use request scope for *everything* unless it absolutely must be saved, on the server side, in between requests from the same user. Craig - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Anybody who can answer this ?
Ruben, Thanx for you reply. I will try to explain you with an example. >From A.jsp we are forwarding the request to B.jsp. B.jsp has some data that should come pre-populated in the form. For populating the ActionForm for B we need to write some code. My question is where can we write that ? In A's Action or in B's Action ? Any simple pattern that can be used for this ? Will it not be better if we use some method in B's action itself that will be called and its form wud be populated there only. In such a case we will have a clear seperation of logic for two pages. Regards, Nitin Dubey --- Ruben Cepeda <[EMAIL PROTECTED]> wrote: > Nitin, > > I am unsure of you quesiton. Yet if you need help > with the DispachAction > here is a very helpfull link: > http://husted.com/struts/tips/002.html > > * > Ruben Cepeda > [EMAIL PROTECTED] > * > > > > Original Message Follows > From: nitin dubey <[EMAIL PROTECTED]> > Reply-To: "Struts Users Mailing List" > > To: Struts Users Mailing List > > Subject: Anybody who can answer this ? > Date: Sun, 13 Mar 2005 06:04:01 -0800 (PST) > > > --- nitin dubey <[EMAIL PROTECTED]> wrote: > > Hello, > > > > When using DispatchAction can we somehow > configure > > the > > framework to use the unspecified() method for > > loading > > the page contents from database ? > > > > > > Regards, > > > > Nitin Dubey > > > > > > > > __ > > Do you Yahoo!? > > Read only the mail you want - Yahoo! Mail > SpamGuard. > > > > http://promotions.yahoo.com/new_mail > > > > > - > > To unsubscribe, e-mail: > > [EMAIL PROTECTED] > > For additional commands, e-mail: > > [EMAIL PROTECTED] > > > > > > > > __ > Do you Yahoo!? > Yahoo! Sports - Sign up for Fantasy Baseball. > http://baseball.fantasysports.yahoo.com/ > > - > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > > > - > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > __ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: BRANCH: Typical Struts development team and distribution of tasks?
Larry Meadors wrote: After all that, I have to ask: Why should I bother? I tried it, I really did. In fact, I tried it several times. Each time, I got a little further before deciding there was too much pain involved to make it "easier" for me. So I switched to iBATIS . +1 for iBatis as faster! .V - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Correct Prepopulate Method
On Fri, 11 Mar 2005 09:31:33 -0800, Dakota Jack <[EMAIL PROTECTED]> wrote: > > If you do this, you won't think of the ActionForm as some sort of > mirror of the JSP/HTML form which stands between the Action and the > form. The fact that ActionForm was designed originally *precisely* to be a container for the server side state of a JSP/HTML form is totally beside the point :-). Jack doesn't like using it that way, and that's fine -- but that was exactly the original intent. And this is why his ideas don't always resonate with people who use Struts the way it was originally created. Craig - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Struts Menu
Hi, Has anyone successfully implemented Struts Menu in your application? I am getting an error as 'The displayer mapping for the specified MenuDisplayer does not exist'. I have done the following 1. In my struts-config I have included the plugin 2. I have placed my menu-config.xml under WEB-INF. 3. My jsp has the corresponding taglibs included 4. struts-menu jar is placed under the lib directory of my application. Am I missing anything else? I posted my problem in struts-menu user list but no replies. If anyone of you is successful with struts-menu, can you please tell me what I am doing wrong? Thanks, Vijaya - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: BRANCH: Typical Struts development team and distribution of tasks?
On Sun, 13 Mar 2005 09:26:24 -0500, David G. Friedman wrote: > Larry, > > > In my experience, Hibernate works best when two criteria are met: > > 1) You are creating a database for a specific purpose, from scratch > > 2) You are creating the ONLY application that will access that database > > I disagree with this and recommend you post this statement on > forums.hibernate.org. I'm sure you'll get plenty of answers to the > contrary. > Disagree away. I love to disagree with people. That is how I learn. Besides, you are free to be wrong if you want to be. ;-) > > The time to draw that screen changed from over 10 > > minutes (we killed it after that, and are not > > sure how long it would have run unchecked) > > Did you bother doing one of the following: > > 1) Check your SQL server logs to see what exact statement was being > executed? You could have tuned your query using hibernate's SQL shortcut > language OR used a native SQL call (method names I cannot recall at this > moment because I use HSQL). The native SQL calls can be invoked in both the > 2.1.X series AND the 3.0 rc sets of releases. You can also see the SQL > query by setting "show_sql=true" in your hibernate.properties or > hibernate.cfg.xml files to have the generated SQL query get printed to your > application log. > It was using native SQL...which made me wonder why the original author bothered to use Hibernate. I thought it was supposed to make the bad SQL all go away > > 2) Make sure your connection properties were set properly? > It was running with a NATIVE driver with direct access to the database...no network latency here. > > 3) Enable lazy loading as necessary to reduce database joins and calls? > It was using lazy loading. > > 4) Request cache tweaking assistance by posting your scenario and caching > ideas to forums.hibernate.org for feedback from those highly experienced in > using caching with Hibernate? There could have been "quirks" to the version > of caching you were using or HOW you configured caching. I cannot use caching because the database is shared by multiple systems (see criteria #2). > > Regards, > David, a happy hibernate user After all that, I have to ask: Why should I bother? I tried it, I really did. In fact, I tried it several times. Each time, I got a little further before deciding there was too much pain involved to make it "easier" for me. So I switched to iBATIS and have not looked back, except when I was looking for another bottleneck to eliminate. Larry, a happy (and reasonably disagreeable) iBATIS user - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Struts Layout:treeview problems
I've done a cursory glance at both Struts:Layout and JSF. Does anyone else feel like JSF is something like Struts:Layout on steroids? I'll know more after I read this "Core Java Server Faces" book as I prepare to Shale myself. ;) Regards, David -Original Message- From: David Kennedy [mailto:[EMAIL PROTECTED] Sent: Sunday, March 13, 2005 2:35 PM To: Struts Users Mailing List Subject: Struts Layout:treeview problems Hi, I've seen Struts:Layout recommended in a couple of places, and it looks like a very useful library, but I'm having a Bad First Experience with using the Treeview tag to replace an aging nav-bar element. I'd love some help as I'm out of prototyping time, and about to have to throw Layout away in favour of Something Else. (1) When I install Layout I've to copy in an /images and /config directory, then some elements to web.xml; these include 'struts-layout-image' for the image directory. As I already have an images directory, I'm not using the defaults. However, at runtime the generated source keeps looking for images in /config which is a) not where I specified b) not where they'd be by default anyway! Anyone familiar with this issue? (2) I'm using the Treeview to replace a bad nav-bar implementation; therefore I'll want to have entries in the list which refer to a forward or an action. However, the menuItem tag only offers a simple link attribute? Am I missing something, or how do I use a Treeview for navigation without the ability to connect it to Struts Forwards/Actions? (3) If I do get the basics working, the styling looks sensible-but-basic. Does anyone know a good way or satisfying the requirement that the current menu item (ie, current page) and menu category are highlighted in the tree? Cheers, -- David Kennedy Swan Labs http://www.swanlabs.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: TILES Exception
Jim, Have you checked your webapp's log file (or the standard log if you don't have special logging enabled for your application) to make sure the log files show that tiles initialized properly and that there were no errors suggesting Struts or Tiles failed to start up/initialize properly? Regards, David -Original Message- From: Jim Douglas [mailto:[EMAIL PROTECTED] Sent: Sunday, March 13, 2005 3:34 PM To: user@struts.apache.org Subject: TILES Exception To all, I get the following error when I try to acces my website which utilizes Tiles. It was working perfectly on one server and all I did was deploy to a different server copying the root web server directory(Tomcat), which contained all the files necessary. Any help would be appreciated. Thanks, Jim type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Can't get definitions factory from context. org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContext Impl.java:845) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextIm pl.java:778) org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:72) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java: 325) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) root cause javax.servlet.jsp.JspException: Can't get definitions factory from context. org.apache.struts.taglib.tiles.InsertTag.processDefinitionName(InsertTag.ja va:575) org.apache.struts.taglib.tiles.InsertTag.createTagHandler(InsertTag.java:47 4) org.apache.struts.taglib.tiles.InsertTag.doStartTag(InsertTag.java:436) org.apache.jsp.index_jsp._jspx_meth_tiles_insert_0(org.apache.jsp.index_jsp :89) org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:63) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java: 325) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) note The full stack trace of the root cause is available in the Apache Tomcat/5.5.4 logs. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Tiles def not recognized by ForwardAction
Les, I think the forward in v1.2 is supposed to be more like this: Regards, David -Original Message- From: Les Dunaway [mailto:[EMAIL PROTECTED] Sent: Sunday, March 13, 2005 7:28 PM To: user@struts.apache.org Subject: Tiles def not recognized by ForwardAction I'm moving a running app from Struts1.1 to Struts 1.24. My problem is with the deprecation of NoOpAction and it's replacement with ForwardAction. I've crawled through the forums enough to see that there's been some problems in this area - ForwardAction doesn't understand that a parameter containing ".fred" points to a Tiles def named .fred I haven't found any solution. Can someone point me in the right direction? >> Tiles Def (one of a bunch that all worked just fine) http://jakarta.apache.org/struts/dtds/tiles-config_1_1.dtd";> > struts-config entry -- L.W.(Les) Dunaway GL Services 770-974-4289 / 888-243-9886 [EMAIL PROTECTED] "Great minds discuss ideas. Average minds discuss events. Small minds discuss people." - Admiral Hyman Rickover - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: Anybody who can answer this ?
Nitin, I am unsure of you quesiton. Yet if you need help with the DispachAction here is a very helpfull link: http://husted.com/struts/tips/002.html * Ruben Cepeda [EMAIL PROTECTED] * Original Message Follows From: nitin dubey <[EMAIL PROTECTED]> Reply-To: "Struts Users Mailing List" To: Struts Users Mailing List Subject: Anybody who can answer this ? Date: Sun, 13 Mar 2005 06:04:01 -0800 (PST) --- nitin dubey <[EMAIL PROTECTED]> wrote: > Hello, > > When using DispatchAction can we somehow configure > the > framework to use the unspecified() method for > loading > the page contents from database ? > > > Regards, > > Nitin Dubey > > > > __ > Do you Yahoo!? > Read only the mail you want - Yahoo! Mail SpamGuard. > > http://promotions.yahoo.com/new_mail > > - > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > __ Do you Yahoo!? Yahoo! Sports - Sign up for Fantasy Baseball. http://baseball.fantasysports.yahoo.com/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Correct Prepopulate Method
Okay, from the FAQ: * Both the |/editRegistration| and |/saveRegistration| actions use the same form bean. * When the |/editRegistration| action is entered, Struts will have pre-created an empty form bean instance, and passed it to the |execute()| method. The setup action is free to preconfigure the values that will be displayed when the form is rendered, simply by setting the corresponding form bean properties. * When the setup action completes configuring the properties of the form bean, it should return an |ActionForm| that points at the page which will display this form. If you are using the Struts JSP tag library, the |action| attribute on your tag will be set to |/saveRegistration| in order for the form to be submitted to the processing action. - The only way for my form to pre-populate from the 'editRegistration' page is to set my html:form action to the 'editRegistration'. However, I can't submit to 'saveRegistration' then! Maybe I'm doing this incorrectly: the first page loads the data from the DB, and then forwards to a JSP, which displays that data using HTML:FORM. Upon submit, it should go to the second page, which saves the data. Am I missing something? - Nic. My struts-config: type="com.racquetclub.action.UserEditAction" name="user"> type="com.racquetclub.action.UserUpdateAction" name="user"> Jesse Clark wrote: Joel, Here is a short description from the FAQ that starts to describe the alternative that Jack mentioned below: http://struts.apache.org/faqs/newbie.html#prepopulate. This approach basically means that you end up with two actions per form/jsp which will increase your maintenance work a little but it provides clean entry points into the work flow and clearly illustrates what responsibilities an action has by its naming scheme. In the FAQ their example actions are called /editFoo and /saveFoo but when I use this approach I usually name my action DisplayFooAction and ProcessFooAction where Foo indicates the primary function of the jsp/form that these actions handle, i.e DisplayEditProfileAction and ProcessEditProfileAction for my editProfile.jsp and EditProfileForm. Then the DisplayFooAction is responsible for gathering the data needed to prepopulate the Form from the business service, populating the Form and placing it in scope for the jsp. I request that a business service prepare the View necessary for the Foo page and then either, populate the Form from POJOs in the view or use collections from the view directly in the jsp to populate drop-down lists & etc. The Form is already available to you in the Action because it is declared in the action mapping for both the DisplayFoo and ProcessFoo actions. Just to qualify my advice, I am still relatively new to this myself and this approach seemed like the simplest way to go for now, but I kinda feel like having 2 actions per page might end up being too much extra baggage and there might be other implications of which I am not yet aware. Hope this helps, anyhow, -Jesse Schuster Joel M Contr ESC/NDC wrote: Ok, I understand. I'm just really trying to understand this. http://resonus.net/wiki/uploads/strutsq.jpg Here's a link to a little picture that I put together because that happens to be how I think. Please tell me what I'm missing in my understanding of what struts is all about. 1. Standard login process. a) request to website from browser, we redirect to the login.jsp via an action or forward. b) Submit is clicked and system encapsulates the data from the request into a form which is then given to the action.execute which c) then determines if the values are correct and forwards to the right place depending. 2. Now, If I want to have the main menu simply go from one screen to another then I have a link. But the second screen needs to be 'populated' (for lack of a better word) with data. 3. To do it the struts 'way' is to link to an action instead. This action fills the framework provided form (because it is defined in the mapping) and forwards to the edit screen. 4. The update action uses the same form which is now filled with changed values from the jsp. --- I keep getting the impression that I've missed something in my understanding of how and more importantly why --- I want to understand, not just do things blindly. I understand that the ActionForm is intended to STORE and VALIDATE USER-ENTERED data (off the struts page)... but then there seems to be a big hole in the functionality of struts. How do you get to the point of having a person select inventory and purchase it if you can't first display that inventory? - Joel -Original Message- From: Dakota Jack [mailto:[EMAIL PROTECTED] Sent: Friday, March 11, 2005 12:02 PM To: Struts Users Mailing List Subject: Re: Correct Prepopulate Method I may be wron
Tiles def not recognized by ForwardAction
I'm moving a running app from Struts1.1 to Struts 1.24. My problem is with the deprecation of NoOpAction and it's replacement with ForwardAction. I've crawled through the forums enough to see that there's been some problems in this area - ForwardAction doesn't understand that a parameter containing ".fred" points to a Tiles def named .fred I haven't found any solution. Can someone point me in the right direction? >> Tiles Def (one of a bunch that all worked just fine) http://jakarta.apache.org/struts/dtds/tiles-config_1_1.dtd";> > struts-config entry type="org.apache.struts.actions.ForwardAction" parameter=".home"> -- L.W.(Les) Dunaway GL Services 770-974-4289 / 888-243-9886 [EMAIL PROTECTED] "Great minds discuss ideas. Average minds discuss events. Small minds discuss people." - Admiral Hyman Rickover - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] CSS site/forum ?
Sorry about the delay between your last and this post - been away from
the list for a few days.
The first thing I have in my CSS files is
*
{
margin: 0;
padding: 0;
}
just to make sure we are on a (fairly) level playing field.
Hopefully IE7's CSS support will be so similar to the standard that it
will be transparent to FF's. Knowing MS they will add their 'helpful'
extensions in but if designers keep away from them you should be okay.
One of my favourite sites for CSS/browser compatibility issues is A List
Apart (http://www.alistapart.com/).
HTH, G.
-
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RE: RE: Struts - Page Centric Framework
I miss the "Front Controller" part, the taglibs and the simplicity. I miss the real MVC (Model 2) from it. I've seen "Front Controller" examples on MSDN, but these are awkward. We are using a base page now that act as a controller, but I still think that developing with ASP.NET is slower than it is with struts. User Controls and Server Controls are neat things; but in general, I think MS just wanted to bring web development closer to Windows UI programmers. Ted: how do you use ASP.NET? Do you have a framework you use? Did you settle down with the "Page Controller" model? If you think this would be off topic, you can email me directly. Thanks, Attila -Original Message- From: Ted Husted [mailto:[EMAIL PROTECTED] Sent: Sunday, March 13, 2005 5:17 AM To: Struts Users Mailing List Subject: Re: Struts - Page Centric Framework I work in ASP.NET myself. What is it about Struts that you miss when working in ASP.NET, Attila? -Ted. On Sat, 12 Mar 2005 22:00:31 -0600, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Well, I guess if you guys think Struts is a page centric framework, you > should check out what > ASP.NET has to offer with it's code behind/"Page Controller" model. > BTW: I've been using Struts and ASP.NET and I was wondering if any of you > knew a Struts like > framework in the .NET world. Any idea is appreciated! > > Thanks, > Attila Domokos - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: BeanUtils hates me...
No. I'm using it correctly. Maybe I said it wrong but I don't think so :-) I want the properties in UserEntity that correspond to the properties in User (a UserEntity subclass) copied onto the User. User *is* my intended destination. UserEntity is my source. What's happening is a Map that part of User (but not UserEntity) IS IN FACT getting overwritten in the call to copyProperties(). It's getting blown away in the same fashion it would be if the User() constructor was called. Making sense now? > -Original Message- > From: Joe Germuska [mailto:[EMAIL PROTECTED] > Sent: Sunday, March 13, 2005 3:03 PM > To: Joe Hertz; 'Struts Users Mailing List' > Subject: RE: BeanUtils hates me... > > At 2:33 PM -0500 3/13/05, Joe Hertz wrote: > >That's the behavior I'd expect too. This did work at one point. No, it's > not > >unintuitive. Least not for C programmers :-) > > > >But I've got smoking gun evidence though that's not what's happening. I'm > >now wondering what's happening in these setters... > > > >Tx for making sure I wasn't spacing. > > um. maybe you are? ;-) > > You wrote: > > > >I call PropertyUtils.copyProperties(user, userEntity) and I'm > watching a > >> map > >> >that was an element of the user object (and not of the userEntity) > >> getting > >> >blown away (almost as if the User Object itself was getting > > > reconstructed). > > I wrote: > > > So, by your example, user should be having all its properties set > > > according to their equivalent values in userEntity. > > user is having its properties set -- it is getting reconstructed -- > because you have it in the first position, the "destination" position. > > If you want to populate the UserEntity, you should use > > PropertyUtils.copyProperties(userEntity, user) > > which is the opposite of what you're saying that you are using. > > Joe > > -- > Joe Germuska > [EMAIL PROTECTED] > http://blog.germuska.com > "Narrow minds are weapons made for mass destruction" -The Ex > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: BeanUtils hates me...
No. I'm using it correctly. Maybe I said it wrong but I don't think so :-) I want the properties in UserEntity that correspond to the properties in User (a UserEntity subclass) copied onto the User. User *is* my intended destination. UserEntity is my source. What's happening is a Map that part of User (but not UserEntity) IS IN FACT getting overwritten in the call to copyProperties(). It's getting blown away in the same fashion it would be if the User() constructor was called. Making sense now? > -Original Message- > From: Joe Germuska [mailto:[EMAIL PROTECTED] > Sent: Sunday, March 13, 2005 3:03 PM > To: Joe Hertz; 'Struts Users Mailing List' > Subject: RE: BeanUtils hates me... > > At 2:33 PM -0500 3/13/05, Joe Hertz wrote: > >That's the behavior I'd expect too. This did work at one point. No, it's > not > >unintuitive. Least not for C programmers :-) > > > >But I've got smoking gun evidence though that's not what's happening. I'm > >now wondering what's happening in these setters... > > > >Tx for making sure I wasn't spacing. > > um. maybe you are? ;-) > > You wrote: > > > >I call PropertyUtils.copyProperties(user, userEntity) and I'm > watching a > >> map > >> >that was an element of the user object (and not of the userEntity) > >> getting > >> >blown away (almost as if the User Object itself was getting > > > reconstructed). > > I wrote: > > > So, by your example, user should be having all its properties set > > > according to their equivalent values in userEntity. > > user is having its properties set -- it is getting reconstructed -- > because you have it in the first position, the "destination" position. > > If you want to populate the UserEntity, you should use > > PropertyUtils.copyProperties(userEntity, user) > > which is the opposite of what you're saying that you are using. > > Joe > > -- > Joe Germuska > [EMAIL PROTECTED] > http://blog.germuska.com > "Narrow minds are weapons made for mass destruction" -The Ex > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Struts - Page Centric Framework
Getting into J2EE and .NET might start to veer off topic. (Though, you might have a look at GetType.) I was thinking in terms of the Struts framework and the ASP.NET framework, rather than the underlying platforms. -Ted. On Sun, 13 Mar 2005 14:12:32 + GMT, Ollie <[EMAIL PROTECTED]> wrote: > For me the single most valuable capability is Class.byName(). I haven't found > a corresponding feature in any.NET language. > > Ollie > > -Original Message- > From: Ted Husted <[EMAIL PROTECTED]> > Date: Sun, 13 Mar 2005 06:16:43 > To:Struts Users Mailing List > Subject: Re: Struts - Page Centric Framework > > I work in ASP.NET myself. > > What is it about Struts that you miss when working in ASP.NET, Attila? > > -Ted. > > On Sat, 12 Mar 2005 22:00:31 -0600, [EMAIL PROTECTED] <[EMAIL PROTECTED]> > wrote: > > Well, I guess if you guys think Struts is a page centric framework, you > > should check out what > > ASP.NET has to offer with it's code behind/"Page Controller" model. > > BTW: I've been using Struts and ASP.NET and I was wondering if any of you > > knew a Struts like > > framework in the .NET world. Any idea is appreciated! > > > > Thanks, > > Attila Domokos > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > Mike Oliver > CTO, Alarius Systems LLC > Las Vegas, Nevada USA - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
TILES Exception
To all, I get the following error when I try to acces my website which utilizes Tiles. It was working perfectly on one server and all I did was deploy to a different server copying the root web server directory(Tomcat), which contained all the files necessary. Any help would be appreciated. Thanks, Jim type Exception report message description The server encountered an internal error () that prevented it from fulfilling this request. exception javax.servlet.ServletException: Can't get definitions factory from context. org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:845) org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:778) org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:72) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:325) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) root cause javax.servlet.jsp.JspException: Can't get definitions factory from context. org.apache.struts.taglib.tiles.InsertTag.processDefinitionName(InsertTag.java:575) org.apache.struts.taglib.tiles.InsertTag.createTagHandler(InsertTag.java:474) org.apache.struts.taglib.tiles.InsertTag.doStartTag(InsertTag.java:436) org.apache.jsp.index_jsp._jspx_meth_tiles_insert_0(org.apache.jsp.index_jsp:89) org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:63) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:99) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:325) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245) javax.servlet.http.HttpServlet.service(HttpServlet.java:802) note The full stack trace of the root cause is available in the Apache Tomcat/5.5.4 logs. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: BeanUtils hates me...
At 2:33 PM -0500 3/13/05, Joe Hertz wrote: That's the behavior I'd expect too. This did work at one point. No, it's not unintuitive. Least not for C programmers :-) But I've got smoking gun evidence though that's not what's happening. I'm now wondering what's happening in these setters... Tx for making sure I wasn't spacing. um. maybe you are? ;-) You wrote: > >I call PropertyUtils.copyProperties(user, userEntity) and I'm watching a map >that was an element of the user object (and not of the userEntity) getting >blown away (almost as if the User Object itself was getting > reconstructed). I wrote: > So, by your example, user should be having all its properties set > according to their equivalent values in userEntity. user is having its properties set -- it is getting reconstructed -- because you have it in the first position, the "destination" position. If you want to populate the UserEntity, you should use PropertyUtils.copyProperties(userEntity, user) which is the opposite of what you're saying that you are using. Joe -- Joe Germuska [EMAIL PROTECTED] http://blog.germuska.com "Narrow minds are weapons made for mass destruction" -The Ex - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: BeanUtils hates me...
Found the problem. Apparently the object I was passing into copyProperties() did some initializations in it's constructor (notably of the Map that was getting blown away). And the destination object that comes out of copyProperties() is not precisely the same one as the one that got passed in. Or at least the constructor seems to have been called again. Should I submit a bug against copyProperties()? I can't decide how bad of an idea that constructor initialization was..., but it seems that copyProperties should be able to handle it. > -Original Message- > From: Joe Germuska [mailto:[EMAIL PROTECTED] > Sent: Sunday, March 13, 2005 2:24 PM > To: Joe Hertz; 'Struts Users Mailing List' > Subject: Re: BeanUtils hates me... > > At 2:15 PM -0500 3/13/05, Joe Hertz wrote: > >I'm sorry about how lame this question seems. I'm staring quite stunned > at > >what I'm seeing in my debugger right now, and I'm hoping someone can > explain > >the behavior. > > > >Using Struts 1.2.4 (BeanUtils 1.7). > > > >I have two objects: A UserEntity and a User. The User is a subclass of > >UserEntity. > > > >I call PropertyUtils.copyProperties(user, userEntity) and I'm watching a > map > >that was an element of the user object (and not of the userEntity) > getting > >blown away (almost as if the User Object itself was getting > reconstructed). > > > >Why does this happen? (I can post to commons-user if I absolutely have > to, > >but I'm hoping someone can explain this... > > Perhaps unintuitively, the order of arguments to copyProperties are > (dest, orig) i.e. (to, from) > http://jakarta.apache.org/commons/beanutils/api/org/apache/commons/beanuti > ls/BeanUtils.html#copyProperties(java.lang.Object,%20java.lang.Object) > > So, by your example, user should be having all its properties set > according to their equivalent values in userEntity. > > joe > -- > Joe Germuska > [EMAIL PROTECTED] > http://blog.germuska.com > "Narrow minds are weapons made for mass destruction" -The Ex - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: BeanUtils hates me...
Found the problem. Apparently the object I was passing into copyProperties() did some initializations in it's constructor (notably of the Map that was getting blown away). And the destination object that comes out of copyProperties() is not precisely the same one as the one that got passed in. Or at least the constructor seems to have been called again. Should I submit a bug against copyProperties()? I can't decide how bad of an idea that constructor initialization was..., but it seems that copyProperties should be able to handle it. > -Original Message- > From: Joe Germuska [mailto:[EMAIL PROTECTED] > Sent: Sunday, March 13, 2005 2:24 PM > To: Joe Hertz; 'Struts Users Mailing List' > Subject: Re: BeanUtils hates me... > > At 2:15 PM -0500 3/13/05, Joe Hertz wrote: > >I'm sorry about how lame this question seems. I'm staring quite stunned > at > >what I'm seeing in my debugger right now, and I'm hoping someone can > explain > >the behavior. > > > >Using Struts 1.2.4 (BeanUtils 1.7). > > > >I have two objects: A UserEntity and a User. The User is a subclass of > >UserEntity. > > > >I call PropertyUtils.copyProperties(user, userEntity) and I'm watching a > map > >that was an element of the user object (and not of the userEntity) > getting > >blown away (almost as if the User Object itself was getting > reconstructed). > > > >Why does this happen? (I can post to commons-user if I absolutely have > to, > >but I'm hoping someone can explain this... > > Perhaps unintuitively, the order of arguments to copyProperties are > (dest, orig) i.e. (to, from) > http://jakarta.apache.org/commons/beanutils/api/org/apache/commons/beanuti > ls/BeanUtils.html#copyProperties(java.lang.Object,%20java.lang.Object) > > So, by your example, user should be having all its properties set > according to their equivalent values in userEntity. > > joe > -- > Joe Germuska > [EMAIL PROTECTED] > http://blog.germuska.com > "Narrow minds are weapons made for mass destruction" -The Ex - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Struts Layout:treeview problems
Hi, I've seen Struts:Layout recommended in a couple of places, and it looks like a very useful library, but I'm having a Bad First Experience with using the Treeview tag to replace an aging nav-bar element. I'd love some help as I'm out of prototyping time, and about to have to throw Layout away in favour of Something Else. (1) When I install Layout I've to copy in an /images and /config directory, then some elements to web.xml; these include 'struts-layout-image' for the image directory. As I already have an images directory, I'm not using the defaults. However, at runtime the generated source keeps looking for images in /config which is a) not where I specified b) not where they'd be by default anyway! Anyone familiar with this issue? (2) I'm using the Treeview to replace a bad nav-bar implementation; therefore I'll want to have entries in the list which refer to a forward or an action. However, the menuItem tag only offers a simple link attribute? Am I missing something, or how do I use a Treeview for navigation without the ability to connect it to Struts Forwards/Actions? (3) If I do get the basics working, the styling looks sensible-but-basic. Does anyone know a good way or satisfying the requirement that the current menu item (ie, current page) and menu category are highlighted in the tree? Cheers, -- David Kennedy Swan Labs http://www.swanlabs.com - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: BeanUtils hates me...
That's the behavior I'd expect too. This did work at one point. No, it's not unintuitive. Least not for C programmers :-) But I've got smoking gun evidence though that's not what's happening. I'm now wondering what's happening in these setters... Tx for making sure I wasn't spacing. > -Original Message- > From: Joe Germuska [mailto:[EMAIL PROTECTED] > Sent: Sunday, March 13, 2005 2:24 PM > To: Joe Hertz; 'Struts Users Mailing List' > Subject: Re: BeanUtils hates me... > > At 2:15 PM -0500 3/13/05, Joe Hertz wrote: > >I'm sorry about how lame this question seems. I'm staring quite stunned > at > >what I'm seeing in my debugger right now, and I'm hoping someone can > explain > >the behavior. > > > >Using Struts 1.2.4 (BeanUtils 1.7). > > > >I have two objects: A UserEntity and a User. The User is a subclass of > >UserEntity. > > > >I call PropertyUtils.copyProperties(user, userEntity) and I'm watching a > map > >that was an element of the user object (and not of the userEntity) > getting > >blown away (almost as if the User Object itself was getting > reconstructed). > > > >Why does this happen? (I can post to commons-user if I absolutely have > to, > >but I'm hoping someone can explain this... > > Perhaps unintuitively, the order of arguments to copyProperties are > (dest, orig) i.e. (to, from) > http://jakarta.apache.org/commons/beanutils/api/org/apache/commons/beanuti > ls/BeanUtils.html#copyProperties(java.lang.Object,%20java.lang.Object) > > So, by your example, user should be having all its properties set > according to their equivalent values in userEntity. > > joe > -- > Joe Germuska > [EMAIL PROTECTED] > http://blog.germuska.com > "Narrow minds are weapons made for mass destruction" -The Ex - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: BeanUtils hates me...
That's the behavior I'd expect too. This did work at one point. No, it's not unintuitive. Least not for C programmers :-) But I've got smoking gun evidence though that's not what's happening. I'm now wondering what's happening in these setters... Tx for making sure I wasn't spacing. > -Original Message- > From: Joe Germuska [mailto:[EMAIL PROTECTED] > Sent: Sunday, March 13, 2005 2:24 PM > To: Joe Hertz; 'Struts Users Mailing List' > Subject: Re: BeanUtils hates me... > > At 2:15 PM -0500 3/13/05, Joe Hertz wrote: > >I'm sorry about how lame this question seems. I'm staring quite stunned > at > >what I'm seeing in my debugger right now, and I'm hoping someone can > explain > >the behavior. > > > >Using Struts 1.2.4 (BeanUtils 1.7). > > > >I have two objects: A UserEntity and a User. The User is a subclass of > >UserEntity. > > > >I call PropertyUtils.copyProperties(user, userEntity) and I'm watching a > map > >that was an element of the user object (and not of the userEntity) > getting > >blown away (almost as if the User Object itself was getting > reconstructed). > > > >Why does this happen? (I can post to commons-user if I absolutely have > to, > >but I'm hoping someone can explain this... > > Perhaps unintuitively, the order of arguments to copyProperties are > (dest, orig) i.e. (to, from) > http://jakarta.apache.org/commons/beanutils/api/org/apache/commons/beanuti > ls/BeanUtils.html#copyProperties(java.lang.Object,%20java.lang.Object) > > So, by your example, user should be having all its properties set > according to their equivalent values in userEntity. > > joe > -- > Joe Germuska > [EMAIL PROTECTED] > http://blog.germuska.com > "Narrow minds are weapons made for mass destruction" -The Ex - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: BeanUtils hates me...
At 2:15 PM -0500 3/13/05, Joe Hertz wrote: I'm sorry about how lame this question seems. I'm staring quite stunned at what I'm seeing in my debugger right now, and I'm hoping someone can explain the behavior. Using Struts 1.2.4 (BeanUtils 1.7). I have two objects: A UserEntity and a User. The User is a subclass of UserEntity. I call PropertyUtils.copyProperties(user, userEntity) and I'm watching a map that was an element of the user object (and not of the userEntity) getting blown away (almost as if the User Object itself was getting reconstructed). Why does this happen? (I can post to commons-user if I absolutely have to, but I'm hoping someone can explain this... Perhaps unintuitively, the order of arguments to copyProperties are (dest, orig) i.e. (to, from) http://jakarta.apache.org/commons/beanutils/api/org/apache/commons/beanutils/BeanUtils.html#copyProperties(java.lang.Object,%20java.lang.Object) So, by your example, user should be having all its properties set according to their equivalent values in userEntity. joe -- Joe Germuska [EMAIL PROTECTED] http://blog.germuska.com "Narrow minds are weapons made for mass destruction" -The Ex
BeanUtils hates me...
I'm sorry about how lame this question seems. I'm staring quite stunned at what I'm seeing in my debugger right now, and I'm hoping someone can explain the behavior. Using Struts 1.2.4 (BeanUtils 1.7). I have two objects: A UserEntity and a User. The User is a subclass of UserEntity. I call PropertyUtils.copyProperties(user, userEntity) and I'm watching a map that was an element of the user object (and not of the userEntity) getting blown away (almost as if the User Object itself was getting reconstructed). Why does this happen? (I can post to commons-user if I absolutely have to, but I'm hoping someone can explain this... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
BeanUtils hates me...
I'm sorry about how lame this question seems. I'm staring quite stunned at what I'm seeing in my debugger right now, and I'm hoping someone can explain the behavior. Using Struts 1.2.4 (BeanUtils 1.7). I have two objects: A UserEntity and a User. The User is a subclass of UserEntity. I call PropertyUtils.copyProperties(user, userEntity) and I'm watching a map that was an element of the user object (and not of the userEntity) getting blown away (almost as if the User Object itself was getting reconstructed). Why does this happen? (I can post to commons-user if I absolutely have to, but I'm hoping someone can explain this... - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
This solution has been discussed, but for now the expectation is real-time data. BTW, thanks for your input on this, but I don't want to hijack this thread for my own particular production issues. I wanted to propose that both ORM (Hibernate, JDO, iBatis) and straight JDBC can/should be used together when one may be better than the other, instead of "trying to fit a square peg into a round hole". Don't get me wrong, I would love to use ORM all the time, but sometimes I don't think its appropriate. /robert Leon Rosenberg wrote: Moving the implementation is out of my hands. JDO for RDBMS is an ORM solution which doesn't necessarily answer the question, why not use both (JDBC and ORM)? I think both solutions have merit and I think that many try to make one solution work for both OLAP and OLTP. Ok, in this case, how about splitting the databases? Keeping OLTP part as is, and creating the OLAP part on daily (hourly or whatever) import basis as a separate DB, where you can create fast indexes, which you can't afford in the OLTP part. Or do you always need to analyse the data instantly? We once made it for a project, where the customer wanted to create new queries for statistical purposes from scratch. Like, today i'd like to know, whether the 50.000 users registered in last month were more female of male, and how many of male users came from north dakota... We created a table, which was imported every night, and contained all the information about a user, which was available in different parts of the system. So the customer was able to analyse everything, without running queries against the live-system. Regards Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] ORM vs JDBC [WAS- BRANCH: Typical Struts development team and distribution of tasks?]
Question: For those applications which are both OLAP and OLTP, then why not use both types of solutions? ... Is this not a reasonable solution? Am I missing something? It is indeed a reasonable solution; I don't do much heavy duty data munging, but I've had decent results using views to back beans which model "report rows"; in some cases also I have processes which build a reporting table as a sort of an index, and then use that as a source for report row beans. Yes, it involved making objects which are otherwise irrelevant to the domain, but it really simplified things and avoided the need to move data around between objects and some reporting output. For real heavy duty data crunching, this may not work, but so far it's been good for me on two projects. Joe -- Joe Germuska [EMAIL PROTECTED] http://blog.germuska.com "Narrow minds are weapons made for mass destruction" -The Ex - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
> Moving the implementation is out of my hands. > > JDO for RDBMS is an ORM solution which doesn't necessarily > answer the question, why not use both (JDBC and ORM)? I think > both solutions have merit and I think that many try to make > one solution work for both OLAP and OLTP. > Ok, in this case, how about splitting the databases? Keeping OLTP part as is, and creating the OLAP part on daily (hourly or whatever) import basis as a separate DB, where you can create fast indexes, which you can't afford in the OLTP part. Or do you always need to analyse the data instantly? We once made it for a project, where the customer wanted to create new queries for statistical purposes from scratch. Like, today i'd like to know, whether the 50.000 users registered in last month were more female of male, and how many of male users came from north dakota... We created a table, which was imported every night, and contained all the information about a user, which was available in different parts of the system. So the customer was able to analyse everything, without running queries against the live-system. Regards Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
> Moving the implementation is out of my hands. > > JDO for RDBMS is an ORM solution which doesn't necessarily > answer the question, why not use both (JDBC and ORM)? I think > both solutions have merit and I think that many try to make > one solution work for both OLAP and OLTP. > Ok, in this case, how about splitting the databases? Keeping OLTP part as is, and creating the OLAP part on daily (hourly or whatever) import basis as a separate DB, where you can create fast indexes, which you can't afford in the OLTP part. Or do you always need to analyse the data instantly? We once made it for a project, where the customer wanted to create new queries for statistical purposes from scratch. Like, today i'd like to know, whether the 50.000 users registered in last month were more female of male, and how many of male users came from north dakota... We created a table, which was imported every night, and contained all the information about a user, which was available in different parts of the system. So the customer was able to analyse everything, without running queries against the live-system. Regards Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: AW: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
Moving the implementation is out of my hands. JDO for RDBMS is an ORM solution which doesn't necessarily answer the question, why not use both (JDBC and ORM)? I think both solutions have merit and I think that many try to make one solution work for both OLAP and OLTP. /robert Leon Rosenberg wrote: And you can't move it to oodbms? Btw, there are JDO implementation for RDBMS (for example KODO JDO by Versant). Makes moving easier... leon -Ursprüngliche Nachricht- Von: Robert Taylor [mailto:[EMAIL PROTECTED] Gesendet: Sonntag, 13. März 2005 16:19 An: Struts Users Mailing List Betreff: Re: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC) An existing production RDBMS implementation :) /robert Leon Rosenberg wrote: Leon, I have zero experience with OODBMS, so I can't comment on that. I guess my question was geared more towards RDBMS. It was an answer :-) Do you have any real requirements which forces you to use rdbms? leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
Use hibernate 3.0 it rocks. It is now part of JBoss and professionally supported by them. Thank you for your time, Jason Long CEO and Chief Software Engineer BS Physics, MS Chemical Engineering http://www.supernovasoftware.com -Original Message- From: Leon Rosenberg [mailto:[EMAIL PROTECTED] Sent: Sunday, March 13, 2005 9:17 AM To: 'Struts Users Mailing List' Subject: AW: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC) And you can't move it to oodbms? Btw, there are JDO implementation for RDBMS (for example KODO JDO by Versant). Makes moving easier... leon > -Ursprüngliche Nachricht- > Von: Robert Taylor [mailto:[EMAIL PROTECTED] > Gesendet: Sonntag, 13. März 2005 16:19 > An: Struts Users Mailing List > Betreff: Re: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC) > > An existing production RDBMS implementation :) > > /robert > > Leon Rosenberg wrote: > >>Leon, > >> > >>I have zero experience with OODBMS, so I can't comment on that. > >> > >>I guess my question was geared more towards RDBMS. > > > > > > It was an answer :-) > > > > Do you have any real requirements which forces you to use rdbms? > > > > leon > > > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
Use hibernate 3.0 it rocks. It is now part of JBoss and professionally supported by them. Thank you for your time, Jason Long CEO and Chief Software Engineer BS Physics, MS Chemical Engineering http://www.supernovasoftware.com -Original Message- From: Leon Rosenberg [mailto:[EMAIL PROTECTED] Sent: Sunday, March 13, 2005 9:17 AM To: 'Struts Users Mailing List' Subject: AW: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC) And you can't move it to oodbms? Btw, there are JDO implementation for RDBMS (for example KODO JDO by Versant). Makes moving easier... leon > -Ursprüngliche Nachricht- > Von: Robert Taylor [mailto:[EMAIL PROTECTED] > Gesendet: Sonntag, 13. März 2005 16:19 > An: Struts Users Mailing List > Betreff: Re: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC) > > An existing production RDBMS implementation :) > > /robert > > Leon Rosenberg wrote: > >>Leon, > >> > >>I have zero experience with OODBMS, so I can't comment on that. > >> > >>I guess my question was geared more towards RDBMS. > > > > > > It was an answer :-) > > > > Do you have any real requirements which forces you to use rdbms? > > > > leon > > > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
AW: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
And you can't move it to oodbms? Btw, there are JDO implementation for RDBMS (for example KODO JDO by Versant). Makes moving easier... leon > -Ursprüngliche Nachricht- > Von: Robert Taylor [mailto:[EMAIL PROTECTED] > Gesendet: Sonntag, 13. März 2005 16:19 > An: Struts Users Mailing List > Betreff: Re: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC) > > An existing production RDBMS implementation :) > > /robert > > Leon Rosenberg wrote: > >>Leon, > >> > >>I have zero experience with OODBMS, so I can't comment on that. > >> > >>I guess my question was geared more towards RDBMS. > > > > > > It was an answer :-) > > > > Do you have any real requirements which forces you to use rdbms? > > > > leon > > > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
AW: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
And you can't move it to oodbms? Btw, there are JDO implementation for RDBMS (for example KODO JDO by Versant). Makes moving easier... leon > -Ursprüngliche Nachricht- > Von: Robert Taylor [mailto:[EMAIL PROTECTED] > Gesendet: Sonntag, 13. März 2005 16:19 > An: Struts Users Mailing List > Betreff: Re: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC) > > An existing production RDBMS implementation :) > > /robert > > Leon Rosenberg wrote: > >>Leon, > >> > >>I have zero experience with OODBMS, so I can't comment on that. > >> > >>I guess my question was geared more towards RDBMS. > > > > > > It was an answer :-) > > > > Do you have any real requirements which forces you to use rdbms? > > > > leon > > > > > > > > > - > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
An existing production RDBMS implementation :) /robert Leon Rosenberg wrote: Leon, I have zero experience with OODBMS, so I can't comment on that. I guess my question was geared more towards RDBMS. It was an answer :-) Do you have any real requirements which forces you to use rdbms? leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
> > Leon, > > I have zero experience with OODBMS, so I can't comment on that. > > I guess my question was geared more towards RDBMS. It was an answer :-) Do you have any real requirements which forces you to use rdbms? leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
AW: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
> > Leon, > > I have zero experience with OODBMS, so I can't comment on that. > > I guess my question was geared more towards RDBMS. It was an answer :-) Do you have any real requirements which forces you to use rdbms? leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
Leon, I have zero experience with OODBMS, so I can't comment on that. I guess my question was geared more towards RDBMS. /robert Leon Rosenberg wrote: Question: For those applications which are both OLAP and OLTP, then why not use both types of solutions? For example, let's say I have a master-detail type report which does a lot of number crunching and is very complex which returns rows where each row represents a record detail. Clicking on a row is a simple query returning the contents of that row to a detail page. For the report query, I may use a stored procedure or an optimized query. When I click on a row, I leverage my ORM solution retrieving the details with a primary key. It seems like this would solve both problems: 1. Use ORM to handle the simple CRUD operations. Reduce the amount of SQL which has to be hand written and maintained. 2. Use straight JDBC to handle complex/optimized data retrievals. Why not use OODBMS for those cases? You have JDO for simple CRUD operations, which is better, easier and faster than any ORM, and have OQL to handle compex data retrievals. Regards Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
> > Question: > For those applications which are both OLAP and OLTP, then why > not use both types of solutions? For example, let's say I > have a master-detail type report which does a lot of number > crunching and is very complex which returns rows where each > row represents a record detail. Clicking on a row is a simple > query returning the contents of that row to a detail page. > For the report query, I may use a stored procedure or an > optimized query. When I click on a row, I leverage my ORM > solution retrieving the details with a primary key. > > It seems like this would solve both problems: > > 1. Use ORM to handle the simple CRUD operations. Reduce the > amount of SQL which has to be hand written and maintained. > > 2. Use straight JDBC to handle complex/optimized data retrievals. Why not use OODBMS for those cases? You have JDO for simple CRUD operations, which is better, easier and faster than any ORM, and have OQL to handle compex data retrievals. Regards Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: [OT] ORM vs JDBC vs OODBMS (was [OT] ORM vs JDBC)
> > Question: > For those applications which are both OLAP and OLTP, then why > not use both types of solutions? For example, let's say I > have a master-detail type report which does a lot of number > crunching and is very complex which returns rows where each > row represents a record detail. Clicking on a row is a simple > query returning the contents of that row to a detail page. > For the report query, I may use a stored procedure or an > optimized query. When I click on a row, I leverage my ORM > solution retrieving the details with a primary key. > > It seems like this would solve both problems: > > 1. Use ORM to handle the simple CRUD operations. Reduce the > amount of SQL which has to be hand written and maintained. > > 2. Use straight JDBC to handle complex/optimized data retrievals. Why not use OODBMS for those cases? You have JDO for simple CRUD operations, which is better, easier and faster than any ORM, and have OQL to handle compex data retrievals. Regards Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[OT] ORM vs JDBC [WAS- BRANCH: Typical Struts development team and distribution of tasks?]
I've been lurking on this thread for a while and had some observations and questions. Observations: It seems like for most OLAP applications; those applications where the majority of the requirements are real-time read operations (reporting, searching, number crunching, etc... where data cannot necessarily be cached) may be best suited for a JDBC type solution as opposed to using an ORM solution. I think this is because an optimized query or stored procedure can retrieve data faster than drilling into an object graph and its respective relationships (n+1 problem). It seems like for most OLTP applications; those applications where the majority of the requirements are write operations (CRUD) are best suited for an ORM solution. This is because the SQL required for executing these operations is easily extrapolated from meta data and therefore eliminates the mundane task of having to write and maintain. Question: For those applications which are both OLAP and OLTP, then why not use both types of solutions? For example, let's say I have a master-detail type report which does a lot of number crunching and is very complex which returns rows where each row represents a record detail. Clicking on a row is a simple query returning the contents of that row to a detail page. For the report query, I may use a stored procedure or an optimized query. When I click on a row, I leverage my ORM solution retrieving the details with a primary key. It seems like this would solve both problems: 1. Use ORM to handle the simple CRUD operations. Reduce the amount of SQL which has to be hand written and maintained. 2. Use straight JDBC to handle complex/optimized data retrievals. Is this not a reasonable solution? Am I missing something? /robert Larry Meadors wrote: We eliminated lazy loading (it was creating literally thousands of queries), and replaced it with a single stored procedure that we mapped to objects with a RowHandler. No outer joins + highly optimized data access = happy users. Larry On Sun, 13 Mar 2005 08:32:58 -0500, N G <[EMAIL PROTECTED]> wrote: On Sun, 13 Mar 2005 06:18:36 -0700, Larry Meadors <[EMAIL PROTECTED]> wrote: For example, on the application I am working on, we changed a screen that accessed a large amount of data. The time to draw that screen changed from over 10 minutes (we killed it after that, and are not sure how long it would have run unchecked) to under one. In the case of smaller sets of data, we went from several minutes to sub-second responses. You mean changing the app from using Hibernate to iBatis changed the performance from 10 min to under 1 and so on? Is that correct? Why do you think there was SUCH a drastic change??? NG. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
RE: BRANCH: Typical Struts development team and distribution of tasks?
Larry, > In my experience, Hibernate works best when two criteria are met: > 1) You are creating a database for a specific purpose, from scratch > 2) You are creating the ONLY application that will access that database I disagree with this and recommend you post this statement on forums.hibernate.org. I'm sure you'll get plenty of answers to the contrary. > The time to draw that screen changed from over 10 > minutes (we killed it after that, and are not > sure how long it would have run unchecked) Did you bother doing one of the following: 1) Check your SQL server logs to see what exact statement was being executed? You could have tuned your query using hibernate's SQL shortcut language OR used a native SQL call (method names I cannot recall at this moment because I use HSQL). The native SQL calls can be invoked in both the 2.1.X series AND the 3.0 rc sets of releases. You can also see the SQL query by setting "show_sql=true" in your hibernate.properties or hibernate.cfg.xml files to have the generated SQL query get printed to your application log. 2) Make sure your connection properties were set properly? 3) Enable lazy loading as necessary to reduce database joins and calls? 4) Request cache tweaking assistance by posting your scenario and caching ideas to forums.hibernate.org for feedback from those highly experienced in using caching with Hibernate? There could have been "quirks" to the version of caching you were using or HOW you configured caching. Regards, David, a happy hibernate user - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: pager-taglib.tld with Struts
I changed the pagerURL to load ad.search.show.screen (jsp) instead of the action. http:///ad.search.show.screen?pager.offset=10 (the ad.search.show.screen points to the respective JSP) Now I've got another error where it cant retrieve the mapping for /SearchUser in the jsp-- <% String url = request.getContextPath() + "/ad.search.show.screen"; %> any idea? rgds, - Original Message - From: "Yen" <[EMAIL PROTECTED]> To: "Struts Users Mailing List" Sent: Sunday, March 13, 2005 8:28 PM Subject: pager-taglib.tld with Struts I wonder how could I use the pager-taglib with struts ? I did a search page, searching by alphabets, let say the user choose 'C' The links for the next page is as below, when I click on it, it give javascripts error: "Object doesnt support this property or method" http:////ad/SearchUser.action?execute=byalpha2&search=C?pager.offset=10 DOes that means, I need to have the pager.offset in the FormBean ? Thanks in advanced. rgds, Yen - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Anybody who can answer this ?
--- nitin dubey <[EMAIL PROTECTED]> wrote: > Hello, > > When using DispatchAction can we somehow configure > the > framework to use the unspecified() method for > loading > the page contents from database ? > > > Regards, > > Nitin Dubey > > > > __ > Do you Yahoo!? > Read only the mail you want - Yahoo! Mail SpamGuard. > > http://promotions.yahoo.com/new_mail > > - > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > __ Do you Yahoo!? Yahoo! Sports - Sign up for Fantasy Baseball. http://baseball.fantasysports.yahoo.com/ - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: BRANCH: Typical Struts development team and distribution of tasks?
We eliminated lazy loading (it was creating literally thousands of queries), and replaced it with a single stored procedure that we mapped to objects with a RowHandler. No outer joins + highly optimized data access = happy users. Larry On Sun, 13 Mar 2005 08:32:58 -0500, N G <[EMAIL PROTECTED]> wrote: > On Sun, 13 Mar 2005 06:18:36 -0700, Larry Meadors > <[EMAIL PROTECTED]> wrote: > > For example, on the application I am working on, we changed a screen > > that accessed a large amount of data. The time to draw that screen > > changed from over 10 minutes (we killed it after that, and are not > > sure how long it would have run unchecked) to under one. In the case > > of smaller sets of data, we went from several minutes to sub-second > > responses. > > You mean changing the app from using Hibernate to iBatis changed the > performance from 10 min to under 1 and so on? Is that correct? > > Why do you think there was SUCH a drastic change??? > > NG. > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Is There a Tool for JSF?
I haven't had experience with it myself, but I've heard that Sun's Studio is very good. NG. On Thu, 10 Mar 2005 10:07:13 +0530, Rajaneesh <[EMAIL PROTECTED]> wrote: > Try WSAD if the cost is not too high for the project > > -Original Message- > From: Michael Oliver [mailto:[EMAIL PROTECTED] > Sent: Wednesday, March 09, 2005 9:16 PM > To: 'Struts Users Mailing List' > Subject: RE: Is There a Tool for JSF? > > We use Exadel's Eclipse4Web > http://www.exadel.com/products_eclipse4web.htm > > Michael Oliver > CTO > Alarius Systems LLC > 3325 N. Nellis Blvd, #1 > Las Vegas, NV 89115 > Phone:(702)643-7425 > Fax:(702)974-0341 > *Note new email changed from [EMAIL PROTECTED] > > -Original Message- > From: Caroline Jen [mailto:[EMAIL PROTECTED] > Sent: Wednesday, March 09, 2005 6:50 AM > To: struts-user@jakarta.apache.org > Subject: Is There a Tool for JSF? > > There are many tools that help developing the Struts; > for example, EasyStruts, StrutsConsole, StrutsBox. > > We also have the NitroX, Lomboz, etc. that help > debugging. > > Is there any tool available for JSF? > > __ > Celebrate Yahoo!'s 10th Birthday! > Yahoo! Netrospective: 100 Moments of the Web > http://birthday.yahoo.com/netrospective/ > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: BRANCH: Typical Struts development team and distribution of tasks?
> For example, on the application I am working on, we changed a > screen that accessed a large amount of data. The time to draw > that screen changed from over 10 minutes (we killed it after > that, and are not sure how long it would have run unchecked) > to under one. In the case of smaller sets of data, we went > from several minutes to sub-second responses. Ok :-) Our requirements was to have read (select) time under 10 ms, and insert/update times on about 20-30 ms. We have very plain data: userId | key | value, which is organized in virtual pages, like there are about 500 different keys, but you are requesting a page of 50 keys at time (same for updating). Second requirement: Hot-Standby-DB, meaning one reader, two writers and switch to second db, on failure, but also for maintenance. Third requirement: No cross connections between tables. There is a table user with same userId as in the above table somewhere, but they are not connected at DB level (they are connected on the service level, but the DB shoudn't know anything about it). This is required to make the whole app scalaable. Clustering DBs is a suicide, so we can reach more scalability by moving different db_instances( and therefore different tables) to many hardware machines, which is better, as spliting a table across multiple machines. As far as we tested it, there was no chance for it with hibernate. I also seriously doubt, it can be made with iBatis (maybe I'm wrong?) But to be true, I don't see _any_ usage for hibernate. If my model is simple, I don't need hibernate. If my model is complex, I take a OODB which is faster and better then. So where is the place for hibernate? Regards Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: BRANCH: Typical Struts development team and distribution of tasks?
> For example, on the application I am working on, we changed a > screen that accessed a large amount of data. The time to draw > that screen changed from over 10 minutes (we killed it after > that, and are not sure how long it would have run unchecked) > to under one. In the case of smaller sets of data, we went > from several minutes to sub-second responses. Ok :-) Our requirements was to have read (select) time under 10 ms, and insert/update times on about 20-30 ms. We have very plain data: userId | key | value, which is organized in virtual pages, like there are about 500 different keys, but you are requesting a page of 50 keys at time (same for updating). Second requirement: Hot-Standby-DB, meaning one reader, two writers and switch to second db, on failure, but also for maintenance. Third requirement: No cross connections between tables. There is a table user with same userId as in the above table somewhere, but they are not connected at DB level (they are connected on the service level, but the DB shoudn't know anything about it). This is required to make the whole app scalaable. Clustering DBs is a suicide, so we can reach more scalability by moving different db_instances( and therefore different tables) to many hardware machines, which is better, as spliting a table across multiple machines. As far as we tested it, there was no chance for it with hibernate. I also seriously doubt, it can be made with iBatis (maybe I'm wrong?) But to be true, I don't see _any_ usage for hibernate. If my model is simple, I don't need hibernate. If my model is complex, I take a OODB which is faster and better then. So where is the place for hibernate? Regards Leon - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: BRANCH: Typical Struts development team and distribution of tasks?
On Sun, 13 Mar 2005 06:18:36 -0700, Larry Meadors <[EMAIL PROTECTED]> wrote: > For example, on the application I am working on, we changed a screen > that accessed a large amount of data. The time to draw that screen > changed from over 10 minutes (we killed it after that, and are not > sure how long it would have run unchecked) to under one. In the case > of smaller sets of data, we went from several minutes to sub-second > responses. You mean changing the app from using Hibernate to iBatis changed the performance from 10 min to under 1 and so on? Is that correct? Why do you think there was SUCH a drastic change??? NG. - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: BRANCH: Typical Struts development team and distribution of tasks?
I am willing to throw out some numbers. :-) I am currently in the process of replacing Hibernate with iBATIS in a web application. The primary reason for this is performance. I do not disagree with you that Hibernate can be made to perform well. I do think however that it has been presented as a general purpose persistence tool, and that it is not. In my experience, Hibernate works best when two criteria are met: 1) You are creating a database for a specific purpose, from scratch 2) You are creating the ONLY application that will access that database If your application does not meet those two criteria (ours did not meet either), then Hibernate is not a good match. With caching on and other people touching the data it is volatile at best. Without caching, it is painfully slow. For example, on the application I am working on, we changed a screen that accessed a large amount of data. The time to draw that screen changed from over 10 minutes (we killed it after that, and are not sure how long it would have run unchecked) to under one. In the case of smaller sets of data, we went from several minutes to sub-second responses. Larry On Fri, 11 Mar 2005 15:12:09 -0700, Kelly Harward <[EMAIL PROTECTED]> wrote: > Not sure that there is a lot of value in throwing around any kind of > empirical numbers since they will certainly vary greatly depending on > numerous factors (the query you're executing, network latency, the actual > RDBMS underneath, the amount of data in the database, proper use of indexes, > etc.). However, in benchmark scenarios we have worked on, it's more common > than not with Hibernate to see response times on par with straight JDBC. The > thing one may be tempted to discount in these kind of comparison benchmarks > is that in a plain ol' JDBC scenario you still have to marshal the JDBC > ResultSet to your domain objects (typically POJOs) if you really want to > compare apples to apples. Remember, Hibernate gives you collections of Java > objects - not a JDBC ResultSet (which, in my view, is a huge win in more > complex J2EE architectures). Granted, there may very well be some of your > existing queries that will appear slower with a generic Hibernate > implementation. We picked a few of our nastiest ones and found that after > some tuning we can get performance from Hibernate that is on par with > straight JDBC. > > I'm not trying to make the case that Hibernate (or similar frameworks) will > always be the best persistence solution for every J2EE app. Rather, I think > it's a mistake to discourage their use as a rule on the grounds that these > frameworks are not performant. > > HTH, > -Kelly > > -Original Message- > From: Leon Rosenberg [mailto:[EMAIL PROTECTED] > Sent: Friday, March 11, 2005 1:24 PM > To: 'Struts Users Mailing List'; [EMAIL PROTECTED] > Subject: BRANCH: Typical Struts development team and distribution of tasks? > > What are your response times? > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
pager-taglib.tld with Struts
I wonder how could I use the pager-taglib with struts ? I did a search page, searching by alphabets, let say the user choose 'C' The links for the next page is as below, when I click on it, it give javascripts error: "Object doesnt support this property or method" http:////ad/SearchUser.action?execute=byalpha2&search=C?pager.offset=10 DOes that means, I need to have the pager.offset in the FormBean ? Thanks in advanced. rgds, Yen
Re: Struts - Page Centric Framework
I work in ASP.NET myself. What is it about Struts that you miss when working in ASP.NET, Attila? -Ted. On Sat, 12 Mar 2005 22:00:31 -0600, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > Well, I guess if you guys think Struts is a page centric framework, you > should check out what > ASP.NET has to offer with it's code behind/"Page Controller" model. > BTW: I've been using Struts and ASP.NET and I was wondering if any of you > knew a Struts like > framework in the .NET world. Any idea is appreciated! > > Thanks, > Attila Domokos - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
