Re: and formatKey

[Oleg V Alexeev]

Hello Matt,

Check the last night build - I just commit fix for it.

Wednesday, March 06, 2002, 4:18:47 AM, you wrote:

MR> I've encountered a possible bug in the use of formatKey in . As
MR> always it's more likely to be my error but I'd appreciate it if anyone could
MR> have a look. I'm running the latest nightly build of struts.

MR> Code snippets are below but to summarise, I'm using the  tag and
MR> formatKey attribute in my JSP to refer to 3 different format keys in my
MR> resource file. However all my values are being formatted using the
MR> format.dollars key if the resource file entries are as below. If I remove
MR> format.dollars then I get the strings formatted as percentages, etc. I.e.
MR> only one format string is ever used. All my properties return datatype
MR> "double" which I assume is something to do with the problem but I'm not sure
MR> what. Why can't I format 4 different properties in 4 different ways using 4
MR> different format keys?

MR> Thanks,
MR> Matt.

MR> In a JSP file I have this snippet:

MR> 
MR> 
MR> 
MR> 
MR> >
MR>  formatKey="format.int" />
MR> >
MR>  formatKey="format.percentage" />
MR> 
MR> 

MR> In my ApplicationResource.properties file I have this snippet:

MR> format.int=0
MR> format.dollars=$0.00
MR> format.percentage=0.00%


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Re: anyone using Castor with Struts?

[Oleg V Alexeev]

Hello John,

We use Castor & Struts in our projects.
The right way to use Castor is to develop beans to work with
entities from the problem domain, develop database structure and
mapping configuration. And after that develop your Struts application.
Struts' ActionForms are presentation specific classes - a some kind of
informational proxy between entity beans and HTML form data from user
input. Action classes incorporates business logic and work with Castor
to take and store entity beans from/to persistence storage. I think
that idea to use ActionForm as beans in Castor mapping is a potential
source of problems. ActionForm must store field values between user
submits and the best choice for type of properties in ActionForm is
java.lang.String. Entity beans can contains any type properties and
all values for it you can transfer from the ActionForm with help of
BeanUtils.populate() method, which perform automatic conversion of
the field values between String values and such types as Data, Integer
and so on.

Friday, February 22, 2002, 7:30:12 AM, you wrote:

JM> I am considering using Castor as a Persistance mechanism with Struts.  Does
JM> anyone currently use Castor?  Since Castor is desinged to work with any bean
JM> like class, to implement castor should I use Castor QQL directly from my
JM> ActionForm classes or should there be some kind of redirection from the
JM> ActionForm to a more Castor specific class?

JM> -john


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Re: Development Environment

[Oleg V Alexeev]

Hello Dave,

Far editor with colorer plugin & Ant.

Thursday, February 21, 2002, 8:41:17 PM, you wrote:

DW> Hello,

DW> Quick question, what is the preferred development environment that you are
DW> all using, Linux - Emacs, VIM,  Windows - JBuilder, VisualAge?


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Re[2]: J2EE BluePrints and Struts

[Oleg V Alexeev]

Hello Ted,

Tuesday, February 05, 2002, 6:20:19 PM, you wrote:

TH> Or, I guess the Commons -- there's a tag, but it's mostly a  JavaBean,
TH> yes?

It is not tag - it is bean only. Developer can set properties and read
page count, iterator with page labels and so all. To generate actual
pager at JSP-page developer can use logic:iterate and so all.

TH> And of course, everything we're saying about Oleg's would also go for
TH> Pierre's, if he would like to donate it to the cause. 

TH> If the two implementations are sufficient differently, and each would
TH> work better under different circumstnaces, perhaps we could offer them
TH> together. 

TH> -T.


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Re[2]: J2EE BluePrints and Struts

[Oleg V Alexeev]

Hello Ted,

Tuesday, February 05, 2002, 4:58:37 PM, you wrote:

TH> Oleg had a pager as part of his BeanFactory, but that was never made
TH> part of the framework. Perhaps he will get back to that after the 
TH> ServiceManager work (Go Oleg!). 

Pager bean is already ok and I can commit it to the repository
anytime. But I think that it is not struts-related stuff and can be
used with any project - so is it right to commit pager bean to the
struts repository? There is one reason only to do so - struts has not
any pager code now... 8)

TH> Generally, these type of model-centric patterns do not need be a part of
TH> the core framework. The framework provides places where you can plug
TH> into the model (Actions). And ways to pass control back and forth
TH> between the View (struts-config elements). But the implementation of
TH> something like paging is an excercise left to the developer. 

TH> A patterns-based approach to paging might be something I would put into
TH> the optional Scaffold package, which has a number of
TH> implementation-pattern type classes. 




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Re[2]: Includes and processing time

[Oleg V Alexeev]

Hello Arron,

There are some underground features...
With static include we have one servlet for every page and for dynamic
include we have one servlet plus additional servlets for every
include. Every include page can be used in a number of pages so this
code will processed by JIT as common used part of application. So, in
some conditions dynamic include can be more preferable...

Thursday, January 24, 2002, 4:40:04 PM, you wrote:

A> Actually... for performance, the first one is best. Why?... as when the 
A> main page is compiled, the files included by this method are included as 
A> if they were written in the one file, and then compiled. If a change is 
A> made to the include, it wont be picked up unless the main page is 
A> changed/recompiled for some reason. As it all ends up being the same 
A> page, this is faster performance wise when everything is compiled and 
A> dancing (C&D? :).

A> For flexibility, the second. This method will create a servlet for each 
A> include, and then pass the context from the first, to the included 
A> second. Because the servlets have to pass the context and everything, 
A> this is slower when everything is C&D. The second can also be called 
A> directly in its own right.

A> For my money, I usually go the first. Well, at least for any include 
A> that wont be edited without being able to restart the server. If it 
A> "needs" to be recompiled, you just touch the main page.

A> In some instances you "need" that second servlet. Why?... Java's spec 
A> means that it will only take a compiled class up to 62K (If memory 
A> serves. It's around there). Some pages we have to make can make this 
A> quite easily once it's all said and done. So this means you have to use 
A> the separate servlets. In one case I used the same include on multiple 
A> pages by creating an empty wrapper JSP which would make another servlet, 
A> and then include the static include like the other pages, and where 
A> included use the dynamic include.


A> More often than not, I go for door number one.
A> (also cool because it perfectly makes for nesting through to included 
A> files, so I can have my "view state" files for my nested beans. :)



A> Arron.


A> Keith Bacon wrote:

>>Hi all,
>>I tend to think that 
>><%@ include file="my_page.jsp" %> is  bad,
>><%jsp: include page="my_page.jsp" %> is best.
>>
>>Any opinions on this?
>>If you change an included file I assume all the jsp's that access it are recompiled 
>next time they
>>are used (or can be manually recompiled). Which could be very slow.
>>Included pages get recompiled, but not the page that includes them ie. only the 
>thing you change
>>gets recompiled.
>>Is this right?
>>
>>Keith.
>>
>>--- Arron Bates <[EMAIL PROTECTED]> wrote:
>>
>>>The type of include you're using here is a dynamic include. Meaning that 
>>>the page to be included isn't simply added, it's compiled into its own 
>>>servlet, and the page's context is passed to the included servlet. For 
>>>the tags to work in the included servlet, they need all the taglib 
>>>imports like your original JSP would.
>>>
>>>Or you can try the other form of include, which simply takes the file 
>>>and puts it in the larger file when the JSP is compiled (this is the 
>>>behavior it seems you are expecting)...
>>><%@ include file="my_page.jsp" %>
>>>
>>>
>>>Arron.
>>>
>>>Bryan P. Glennon wrote:
>>>
Hi -
   This is really more of a JSP question, but since it involves struts
tags I figured I'd give it a shot here. I have a page which contains a
form built using the html:form taglib. Based on the users selection from
that form, I go off and do some processing and redirect the user back to
the same page. During the processing, an attribute gets set to indicate
which detail information to include. I try to include this detail page
(which is also an html:form form) by doing a jsp:include.  Basically,
the page looks like this:

 
 Navigation form
 

 Static stuff here

 

 My problem is that the tags in the included page never get
processed. So, is there anyway I can make this work?

   Sorry again for the OT post.

Cheers,
Bryan

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>>>
>>>
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>>
>>
>>__
>>Do You Yahoo!?
>>Great stuff seeking new owners in Yahoo! Auctions! 
>>http://auctions.yahoo.com
>>
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Re:

[Oleg V Alexeev]

Hello Marcelo,

You must use last nightly build - struts.jar from it and *.tld files
too.

Thursday, January 17, 2002, 12:59:43 AM, you wrote:

MC> Hi,
 
MC> I was wandering how the format attribute of  tag works... I've tried 
everything imaginable and the JSP keep teling me that format is not a valid 
attribute...

MC> any help?

MC> BTY, I tried with the latest nightly build and with struts1.01

MC> PS.:

MC> The Struts documentation is Great... But if we had "dummy" examples on each tag 
and each attribute, will make it the greatest...

MC> Regards,
MC> Marcelo.

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Re[2]: internationalization numeric formats

[Oleg V Alexeev]

Hello ltorrence,

Tuesday, December 18, 2001, 4:05:32 PM, you wrote:

lpc> This is great for . How do you handle this for  tags?

Nothing. Because of html:text use values from ActionForm object.
ActionForm object must be instantiated and filled by string values
from buziness logic level. All string conversions must be perfomed on
phase of values converting from buziness level to the ActionForm
properties.

lpc> -Original Message-
lpc> From: Oleg V Alexeev [mailto:[EMAIL PROTECTED]]
lpc> Sent: Tuesday, December 18, 2001 3:52 AM
lpc> To: Struts Users Mailing List
lpc> Subject: Re: internationalization numeric formats


lpc> Hello Nathan,

lpc> Monday, December 17, 2001, 8:53:29 PM, you wrote:

NC>> Hi,

NC>> does struts support different formats for numbers dependent upon the
lpc> locale
NC>> of the user?  I've had a look in the bean write tag code which seems to
NC>> indicate using keys such as org.apache.struts.taglib.bean.format.float.
NC>> Should this be used in the Application.properties and
NC>> Application_de.properties files e.g:

NC>> org.apache.struts.taglib.bean.format.float=###,###,###,###,###.###

NC>> Cheers Nathan

lpc> Yes, you can define format string for every locale you use. You can
lpc> define default format string as

lpc>   org.apache.struts.taglib.bean.format.float=###,###,###,###,###.###

lpc> or you can define special format for every locale and specify it in
lpc> bean:write tag with 'formatKey' attribute -

lpc>   may.float.format=.

lpc>   

NC>> **
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NC>> This footnote also confirms that this email message has been swept by
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Re: internationalization numeric formats

[Oleg V Alexeev]

Hello Nathan,

Monday, December 17, 2001, 8:53:29 PM, you wrote:

NC> Hi,

NC> does struts support different formats for numbers dependent upon the locale
NC> of the user?  I've had a look in the bean write tag code which seems to
NC> indicate using keys such as org.apache.struts.taglib.bean.format.float.
NC> Should this be used in the Application.properties and
NC> Application_de.properties files e.g:

NC> org.apache.struts.taglib.bean.format.float=###,###,###,###,###.###

NC> Cheers Nathan

Yes, you can define format string for every locale you use. You can
define default format string as

  org.apache.struts.taglib.bean.format.float=###,###,###,###,###.###

or you can define special format for every locale and specify it in
bean:write tag with 'formatKey' attribute -

  may.float.format=.

  

NC> **
NC> This email and any files transmitted with it are confidential and
NC> intended solely for the use of the individual or entity to whom they
NC> are addressed. If you have received this email in error please notify
NC> the system manager.

NC> This footnote also confirms that this email message has been swept by
NC> MIMEsweeper at LevelSeas for the presence of computer viruses.

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Re: HOW TO: set up a pager with struts

[Oleg V Alexeev]

Hello storck,

I can suggest you my way. On base of query parameters, offset and page
length values generate container or array of objects from database and
store total value of records. Container or array you can display with
iterate tag. For purposes of page links generation I can suggest bean
and tag for you - I can send it for you.

Wednesday, November 14, 2001, 1:09:06 PM, you wrote:

s> Hi,

s> I am developing a webapp with struts and EJB's. In some cases I only have to
s> display a list of Items. The problem is, that I cant show the whole list ...
s> sure to big ...
s> For retrieving the list I will either use the "Fast-Lane Reader Pattern" and
s> the "Page-by-Page Iterator Pattern". In the "Pet Store Demo" they
s> implemented the "Page-by-Page Iterator" as a applicationspecific Tag, but I
s> think it should also be possible to implement it with struts (I am right).
s> Now I NEED your HELP. How must I set it up correct?

s> Any suggestions and comments are welcome !!!


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Re[3]: Digester Help PLEASE

[Oleg V Alexeev]

Hello Sean,

Friday, August 24, 2001, 5:51:33 PM, you wrote:

S> Oleg,

S> The problem is that none of the rules are being fired at all, no objects are
S> getting created, nothing at all.  The patterns match what is in the file,
S> the file is valid, I should see some Factory objects get created, some
S> PatternSet objects get created, and a whole bunch of sets etc happen but
S> nothing is happening at all ... no a single object is getting consucted.  I
S> have placed print statements in the constructors and nothing, nada ...  That
S> is what is wrong ... It's like the digester is parsing the file but for some
S> weird reason it doesn't see any matches to my rules I added to the Digester.

What version of Digester are you use?

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Re[2]: Digester Help PLEASE

[Oleg V Alexeev]

Hello Sean,

What is wrong with your code - explane please.

P.S. May be I am wrong but try to avoid such patterns as
"*/patternset"


Friday, August 24, 2001, 5:37:58 PM, you wrote:

S> Oleg,

S> I am running this from a main() test program and only one instance it being
S> created.  Do you see anything wrong with the rules? XML file?

S> Sean



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Re: Digester Help PLEASE

[Oleg V Alexeev]

Hello Sean,

You can create only ONE instance of Digester in your application. If
it can help you...

Friday, August 24, 2001, 5:26:22 PM, you wrote:

S> Ok, after spending over 2 hours trying to debug this can I get some eyes on
S> this please?  Does anyone see anything wrong with this method ran against
S> the attached datafile:

S> protected void initMappings(InputStream input) {

S> Digester digester = new Digester();
S> digester.setDebug(1);
S> digester.setValidating(false);
S> digester.push(this);

S> digester.addObjectCreate("factory-selector/factory",
S> "com.company.Factory");
S> digester.addSetProperties("factory-selector/factory");
S> digester.addSetNext("factory-selector/factory", "addFactory",
S> "com.company.Factory");

S> digester.addObjectCreate("*/patternset", "com.company.PatternSet");
S> digester.addSetProperties("*/patternset");
S> digester.addSetNext("*/patternset", "addPatternSet",
S> "com.parlano.web.struts.mapping.PatternSet");

S> digester.addCallMethod("*/pattern", "addPattern", 0);

S> try {
S>   digester.parse(input);
S> }
S> catch (Exception e) {
S>   System.out.println("DAMN ERRORS");
S>   e.printStackTrace();
S> }
S> }

S> PLEASE, any help would be greatly appreciated ... I can't figure out why
S> NONE of my objects are getting created nor are they getting populated.  No
S> methods are getting called ...I get no exceptions no nothing ... I put print
S> statements around things and it is getting through all of this.  I also
S> tried breaking the XML in the datafile and it breaks and errors out so I
S> know it is parsing the file.  ANY help would be appreciated, Thanks ...

S> Sean



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Re: Linking HREF with Action

[Oleg V Alexeev]

Hello Olivier,

Thursday, August 16, 2001, 10:44:54 AM, you wrote:

OH> Hi all,

OH> I just wanted to know if it's possible to define an Action in the Struts config 
XML file that would be called from an HTML link (html:link tag) that IS NOT within a 
form ?
OH> I tried but it seems that the framework needs an ActionForm bean associated with 
each Action.

OH> Any idea, comments ?

If you are not define form for some action then reference to
ActionForm in perform() method for this action will be null. And you
can use html:link in any place of the JSP, not only in forms.

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Re: LDAP Authentication To Active Directory

[Oleg V Alexeev]

Hello SUPRIYA,

Can you place your code sample to the some server and post URL to it
to the list?

Monday, August 13, 2001, 3:39:48 PM, you wrote:

SM> I have successfully implemented LDAP authentication to Microsoft Active 
SM> Directory at Wayne State University school of Medicine. If anyone is 
SM> interested in having LDAP Authentication To Microsoft Active Directory , 
SM> please email me.

SM> Supriya Misra
SM> System Integrator II
SM> MSIS,WSUSOM
SM> Detroit, MI

SM> _
SM> Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp




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 Olegmailto:[EMAIL PROTECTED]

Re[2]: String as Index

[Oleg V Alexeev]

Hello Rey,

Rey, I search page but can not found anything about your string keyed
proeprties. Can you send URL to the archive with sources?

Wednesday, August 01, 2001, 3:59:51 PM, you wrote:


RF> You can use the PropertyUtils that I have created (reusing the Struts one)
RF> within the Mapper framework
RF> (http://www.husted.com/about/struts/resources.htm#extensions). It supports
RF> "string keyed properties", using the notation
RF> 'simple.nested.indexed[1].stringKeyed("key")'.
RF> See this posting about this topic.
RF> http://www.mail-archive.com/struts-user@jakarta.apache.org/msg10858.html

RF> Fr.

RF> -Original Message-
RF> From: Gregor Rayman [mailto:[EMAIL PROTECTED]]
RF> Sent: 01 August 2001 13:55
RF> To: [EMAIL PROTECTED]
RF> Subject: String as Index


RF> Hi,

RF> as far as I can remember, there was a topic about String as index in
RF> property getters/setters here some time ago.


RF> I'd like somethigh like this:

RF> 

RF> and aaa{bbb} should be converted to getAaa("bbb") and setAaa("bbb", value).

RF> Is there something implemented in this direction already? Can I use the
RF> results? Can I help?

RF> --
RF> gR

RF> 
RF> The information in this email is confidential and is intended solely
RF> for the addressee(s).
RF> Access to this email by anyone else is unauthorised. If you are not
RF> an intended recipient, you must not read, use or disseminate the
RF> information contained in the email.
RF> Any views expressed in this message are those of the individual
RF> sender, except where the sender specifically states them to be
RF> the views of Capco.

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Re: String as Index

[Oleg V Alexeev]

Hello Gregor,

Wednesday, August 01, 2001, 3:55:04 PM, you wrote:

GR> as far as I can remember, there was a topic about String as index in
GR> property getters/setters here some time ago.


GR> I'd like somethigh like this:

GR> 

GR> and aaa{bbb} should be converted to getAaa("bbb") and setAaa("bbb", value).

GR> Is there something implemented in this direction already? Can I use the
GR> results? Can I help?

Now indexed properties can be used only. All properties are processed
by utilites from beanutils package at jakarta-commons. It can parse
indexed properties only. Named properties is great addition, of
course. And of course, you can refactor beanutils package to implement
named properties. It will be great help. 8)

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Re[2]: Passing parameters when chaining actions

[Oleg V Alexeev]

Hello Fabien,

Friday, July 27, 2001, 11:29:06 PM, you wrote:

FM> Hello Oleg,

FM> Thanks for your help. 

>> Can you save values in request or in session context? 

FM> I was trying to avoid using the session context and using
FM> the request, so that I have less clean-up to do:). I could 
FM> use either one if this is the best way.

FM> If I place my parameter as request attribute, will the
FM> form population algorithm look in both the request parameters
FM> and attributes?

Form population algorithm looks for parameters only,

>> If no, then you can build query string, add it to the path 
>> in forward and forward to the nested action. All values 
>> will be automatically passed to the action's form.

FM> That's a very good idea; I actually didn't know I could
FM> do that.

Find or create forward, take path from it, create Map with parameters
as for html:link tag, pass this map to the RequestUtils.computeURL()
method to compute URL and add computed URL prepended with '?' sign to
the path for the forward. Return it. Thats all.

FM> Which solution do you think is best?

I don't like both... 8) But if you use your nested action twice or
more in your application and not as nested action only (in one
situation as nested in another - as standart action) then the best way
is to pass values via query string.
If you use this action as nested only then solution with request
attributes gets you less overhead against query string.


FM> Thanks,

FM> -Fabien

FM> -  
FM> Fabien Modoux,
FM> Voicemate - http://www.voicemate.com

FM> -Original Message-
FM> From: Oleg V Alexeev [mailto:[EMAIL PROTECTED]]
FM> Sent: Friday, July 27, 2001 2:34 PM
FM> To: [EMAIL PROTECTED]
FM> Subject: Re: Passing parameters when chaining actions


FM> Hello Fabien,

FM> Friday, July 27, 2001, 8:02:28 PM, you wrote:

FM>> I would like to have an action pass parameters
FM>> to another actions using a forward action mapping.
FM>> The second action is configured with a form in
FM>> the request scope:

FM>> > type="Action2Form"/>

FM>> >type="Action1">
FM>>   
FM>> 

FM>> >type="Action2"
FM>>name="action2Form"
FM>>scope="request">
FM>>   
FM>> 

FM>> I tried to have the first action instantiate
FM>> the form, populate it, and set it as a request 
FM>> attribute, under the name of the form defined 
FM>> in my struts-config file (action2Form). However,
FM>> when I cast the form in action2 to the action2Form,
FM>> all the fields are null? Should this work, or
FM>> shall I manually look in the request for the
FM>> form? Is there a better way to do that?

FM> Can you save values in request or in session context? If no, then you
FM> can build query string, add it to the path in forward and forward to
FM> the nested action. All values will be automatically passed to the
FM> action's form.




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Re: some comparision between JSP/struts and velocity

[Oleg V Alexeev]

Hello suhas,

Friday, July 27, 2001, 3:40:20 PM, you wrote:

s> http://jakarta.apache.org/velocity/ymtd/ymtd-taglibs.html

8) Author of this article take a wrong way to compose struts sample...
He (Jon S. Stevens) place a container creation code to the JSP page -
yes, such approach not so fine for any application, not only struts
based. Struts main approach is to create all business objects in
Action class and forward to the JSP view. It is MVC2, not MVC.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Passing parameters when chaining actions

[Oleg V Alexeev]

Hello Fabien,

Friday, July 27, 2001, 8:02:28 PM, you wrote:

FM> I would like to have an action pass parameters
FM> to another actions using a forward action mapping.
FM> The second action is configured with a form in
FM> the request scope:

FM>  type="Action2Form"/>

FM> type="Action1">
FM>   
FM> 

FM> type="Action2"
FM>name="action2Form"
FM>scope="request">
FM>   
FM> 

FM> I tried to have the first action instantiate
FM> the form, populate it, and set it as a request 
FM> attribute, under the name of the form defined 
FM> in my struts-config file (action2Form). However,
FM> when I cast the form in action2 to the action2Form,
FM> all the fields are null? Should this work, or
FM> shall I manually look in the request for the
FM> form? Is there a better way to do that?

Can you save values in request or in session context? If no, then you
can build query string, add it to the path in forward and forward to
the nested action. All values will be automatically passed to the
action's form.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: full featured example

[Oleg V Alexeev]

Hello Michael,

Friday, July 27, 2001, 8:32:21 AM, you wrote:

MM> Here is another full featured example without console.

MM> www.teatimej.com  (Web Timesheet Management System).

MM> It also uses Castor for O/R data binding and itext for dynamic PDF document
MM> generation and JavaMail.

Is it open-source project? Can anybody take a look to the source code?
If no then it is not example - it is some kind of presentation or
demo. It think that full featured example contains source code of
itself to review source code and learn.

MM> Regards

MM> Michael Mok
MM> www.teatimej.com

MM> -Original Message-
MM> From: Pan Li [mailto:[EMAIL PROTECTED]]
MM> Sent: Friday, 27 July 2001 11:47
MM> To: [EMAIL PROTECTED]
MM> Subject: Re: full featured example


MM> There is a example which is really "full featured" but
MM> without source code.
MM> It is the admin consle of WebSphere 4.0.

MM> __
MM> Do You Yahoo!?
MM> Make international calls for as low as $.04/minute with Yahoo! Messenger
MM> http://phonecard.yahoo.com/



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Creation of form bean

[Oleg V Alexeev]

Hello dhay,

Friday, July 27, 2001, 12:17:33 AM, you wrote:



dlc> Hi.  Just a quick question - if I link directly to a jsp which contains an
dlc> html:form tag with a formbean specified which I use on submit, is the formbean
dlc> created by Struts?

html:form looks for the form instance and if not found one then it
will be created.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: dynamic forward

[Oleg V Alexeev]

Hello Erik,

One thing... I think you have a wrong way with such solution. More
flexible approach is to place all forward choosing logic to the Action
class, not to the JSP page.

Thursday, July 26, 2001, 5:34:02 PM, you wrote:

EjdW> oke I solved it like this

EjdW> 
EjdW> 

EjdW> not very pretty but it works



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Error with Data Sources

[Oleg V Alexeev]

Hello Edward,

You need to add jdbc2_0-stdext.jar to the CLASSPATH or to the
WEB_INF/lib directory inside of your application.

Thursday, July 26, 2001, 5:07:10 PM, you wrote:

EM> So I've put in a data-sources section that does parse right, but I get
EM> the following errors when tomcat starts up een though postgresql.jar is
EM> in the apps WEB-INF/lib directory... Can anyone please help?

EM> BTW: I can use regular (non-pool) JDBC as that is how I have the
EM> application working.

EM> New org.apache.struts.util.GenericDataSource
EM> java.lang.NoClassDefFoundError: javax/sql/DataSource
EM> at java.lang.ClassLoader.defineClass0(Native Method)
EM> at java.lang.ClassLoader.defineClass(ClassLoader.java:486)
EM> at
EM> 
org.apache.tomcat.loader.AdaptiveClassLoader12.doDefineClass(AdaptiveClassLoader12.java:93)
EM> at
EM> 
org.apache.tomcat.loader.AdaptiveClassLoader.loadClass(AdaptiveClassLoader.java:509)
EM> at java.lang.ClassLoader.loadClass(ClassLoader.java:253)
EM> at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
EM> at java.lang.Class.forName0(Native Method)
EM> at java.lang.Class.forName(Class.java:120)
EM> at
EM> org.apache.struts.digester.ObjectCreateRule.begin(ObjectCreateRule.java:152)
EM> at org.apache.struts.digester.Digester.startElement(Digester.java:498)
EM> at com.sun.xml.parser.Parser.maybeElement(Parser.java:1391)
EM> at com.sun.xml.parser.Parser.content(Parser.java:1499)
EM> at com.sun.xml.parser.Parser.maybeElement(Parser.java:1400)
EM> at com.sun.xml.parser.Parser.content(Parser.java:1499)
EM> at com.sun.xml.parser.Parser.maybeElement(Parser.java:1400)
EM> at com.sun.xml.parser.Parser.parseInternal(Parser.java:492)
EM> at com.sun.xml.parser.Parser.parse(Parser.java:284)
EM> at javax.xml.parsers.SAXParser.parse(SAXParser.java:155)
EM> at javax.xml.parsers.SAXParser.parse(SAXParser.java:77)
EM> at org.apache.struts.digester.Digester.parse(Digester.java:716)
EM> at
EM> org.apache.struts.action.ActionServlet.initMapping(ActionServlet.java:1247)
EM> at org.apache.struts.action.ActionServlet.init(ActionServlet.java:437)
EM> at javax.servlet.GenericServlet.init(GenericServlet.java:258)
EM> at
EM> org.apache.tomcat.core.ServletWrapper.doInit(ServletWrapper.java:317)
EM> at org.apache.tomcat.core.Handler.init(Handler.java:215)
EM> at org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:296)
EM> at
EM> 
org.apache.tomcat.context.LoadOnStartupInterceptor.contextInit(LoadOnStartupInterceptor.java:130)
EM> at
EM> org.apache.tomcat.core.ContextManager.initContext(ContextManager.java:491)
EM> at org.apache.tomcat.core.ContextManager.init(ContextManager.java:453)
EM> at org.apache.tomcat.startup.Tomcat.execute(Tomcat.java:195)
EM> at org.apache.tomcat.startup.Tomcat.main(Tomcat.java:235)
EM> Begin event threw exception
EM> java.lang.ClassNotFoundException:
EM> org/apache/struts/util/GenericDataSource
EM> at java.lang.Class.forName0(Native Method)
EM> at java.lang.Class.forName(Class.java:120)
EM> at
EM> org.apache.struts.digester.ObjectCreateRule.begin(ObjectCreateRule.java:152)
EM> at org.apache.struts.digester.Digester.startElement(Digester.java:498)
EM> at com.sun.xml.parser.Parser.maybeElement(Parser.java:1391)
EM> at com.sun.xml.parser.Parser.content(Parser.java:1499)
EM> at com.sun.xml.parser.Parser.maybeElement(Parser.java:1400)
EM> at com.sun.xml.parser.Parser.content(Parser.java:1499)
EM> at com.sun.xml.parser.Parser.maybeElement(Parser.java:1400)
EM> at com.sun.xml.parser.Parser.parseInternal(Parser.java:492)
EM> at com.sun.xml.parser.Parser.parse(Parser.java:284)
EM> at javax.xml.parsers.SAXParser.parse(SAXParser.java:155)
EM> at javax.xml.parsers.SAXParser.parse(SAXParser.java:77)
EM> at org.apache.struts.digester.Digester.parse(Digester.java:716)
EM> at
EM> org.apache.struts.action.ActionServlet.initMapping(ActionServlet.java:1247)
EM> at org.apache.struts.action.ActionServlet.init(ActionServlet.java:437)
EM> at javax.servlet.GenericServlet.init(GenericServlet.java:258)
EM> at
EM> org.apache.tomcat.core.ServletWrapper.doInit(ServletWrapper.java:317)
EM> at org.apache.tomcat.core.Handler.init(Handler.java:215)
EM> at org.apache.tomcat.core.ServletWrapper.init(ServletWrapper.java:296)
EM> at
EM> 
org.apache.tomcat.context.LoadOnStartupInterceptor.contextInit(LoadOnStartupInterceptor.java:130)
EM> at
EM> org.apache.tomcat.core.ContextManager.initContext(ContextManager.java:491)
EM> at org.apache.tomcat.core.ContextManager.init(ContextManager.java:453)
EM> at org.apache.tomcat.startup.Tomcat.execute(Tomcat.java:195)
EM> at org.ap

Re: AW: newbie: initial values

[Oleg V Alexeev]

Hello ecn11,

I can suggest to you only one standart way - to add all needed
parameters to the Map and use RequestUtils.computeURL() method to
build URL for the forward.

Thursday, July 26, 2001, 3:53:52 PM, you wrote:

e> Hi.

e> Thank you very much. The way you have described works really fine...

e> But now I have another problem:

e> After saving the form my ActionForward perform(...) returns
e> mapping.findForward("success"); Is there a way of generating the
e> "editthingdifferent.do?id=BLA" again - that is adding a "?id=BLA" to the
e> mapping that the findForward generated... I have to edit further properties
e> of the same "somthing" in the next form.

e> Dominic

e> -Ursprüngliche Nachricht-
e> Von: Gregor Rayman [mailto:[EMAIL PROTECTED]]
e> Gesendet: Mittwoch, 25. Juli 2001 14:58
e> An: [EMAIL PROTECTED]
e> Betreff: Re: newbie: initial values


e> "ecn11" <[EMAIL PROTECTED]> writes:


>> Hi.
>> 
>> I apologize for this probably really stupid question, but I was not able
e> to
>> find a suitable answer anywhere, yet...
>> 
>> In my user management I want to provide a way that the users can change
>> their address (they are already stored in a database). Thus I need a form
>> with the old address as initial values.
>> 
>> In other words: There is a session variable "UserId". How can the form
e> bean
>> that is used by "edituser.jsp" access this userid to adjust it's initial
>> values.

e> Dont do it this way. Implement an Action which fills the form with values.

e> What I usually (I use struts one month :-) do in such "edit something"
e> situations:

e> I create I an EditTgingActionForm with properties 
e>  a) the key properties
e>  b) the dependent properties 
e>  c) optional - a boolean indicator isEditing

e> I create an EditThingAction which:
e>  d) checks to see, whether the form has been filled from HTTP
e>  (which means: b) properties are filled and c) is true)
e> if so, then it performs the updates. If not, no updates.

e>  e) fills the properties b) from the database using the key properties a).


e> In my JSP which leads to that action, i use parametrized link:
e>(generated with )
  
e> As you see, properties b) or c) are not supplied, so the Action
e> knows, there is nothing to be updated, it just retrieves the data.

e> editthing.do then forward to a JSP, which displays the retrieved 
e> data and when submitted (again to editthing.do) EditThingAction
e> know, it has to update the data.

e> --
e> gR







-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: calling actionmapping from a URL

[Oleg V Alexeev]

Hello Jan,

Thursday, July 26, 2001, 1:40:48 AM, you wrote:

JFØ> Hi
JFØ> I have a action class that is used in several actionmappings and in some
JFØ> situations it is called directly
JFØ> from a url, like "href=myaction.do", but in these cases the validation
JFØ> implemented prevents me from continuing the process.
JFØ> My question is: how can i turn off validation when calling a action class
JFØ> from a URL.

Is is simple - set validate attribute in action mapping to false:







-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Accessing JDBC-ODBC from Struts

[Oleg V Alexeev]

Hello Rodney,

Wednesday, July 25, 2001, 5:19:58 PM, you wrote:

RS> Hi

RS> I need some direction on how to incorporate JDBC-ODBC into my struts
RS> and where the ODBC should be stored in my application. Also how to reference
RS> that in my Action Servlet, I am a little unsure about this area, but would
RS> appreciate some feed back or documentation that will simplify my work.

No problem. Open connection with ODBC-JDBC driver in Action class and
perform any operations with this datasource.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: DataSource and Factories

[Oleg V Alexeev]

Hello Andreas,

Wednesday, July 25, 2001, 1:59:50 PM, you wrote:


AL> Hi again,

AL> I would like to seperate my buisness logic from the data layer. Say I
AL> have an object Person, that has the fields id, firstName and lastName.
AL> The only constructor I provide is one which takes two arguments (id,
AL> firstName and lastName). The person objects will be stored in a certain
AL> Database, but this may change in the future, this is why I use a
AL> factory. The factory takes an id, connects to the DB, retrieves the
AL> data, creates the Person object and returns it. 

AL> This pattern also comes in handy, when you have classes that inherit
AL> from Person. If the DB access would happen in the constructor, one could
AL> only create Person objects, with a factory, you can create an object of
AL> the real type instead.

AL> Anyway, what I want is to get a DataSource without knowing about a
AL> servlet. Is this somehow possible? Is there some static access to the
AL> DataSource Repository?

Take a look to the Castor project -
http://castor.exolab.org

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: form based login - tracking - security with struts

[Oleg V Alexeev]

Hello Hartmut,

Wednesday, July 25, 2001, 3:21:26 PM, you wrote:

HB> Hi,

HB> I search for the best practice of form based login and security
HB> mechanism based on it.
HB> Who knows a link or wants to contribute some information or hints to the
HB> following themes:

HB> Is it a good practice to forward *all* JSP pages through the action
HB> servlet instead of calling some JSP pages with a direkt link (>...).

HB> How can JSP pages be hidden so that they can be accessed only via the
HB> central servlet?

You can place pages to the WEB-INF/jsp, for example, and in action
mappings write forward to the "WEB-INF/jsp/page.jsp"






-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Where do YOU put JDBC calls?

[Oleg V Alexeev]

Hello Ryan,

Wednesday, July 18, 2001, 5:55:46 PM, you wrote:

RC> I'm wondering what people are considering best practices for JDBC calls?

RC> I have been writing beans that wrap a database table, and include functions 
"select", "insert", "delete". These functions either load the bean, insert the bean 
values in the database, or delete
RC> the record from the database. In all of these functions, I pass in a database 
connection from the action. (Or whatever else is calling the bean.)

RC> ie- public boolean select(Connection cn1, String primaryKey)

RC> How are others doing it? I think this is a good approach, but want to see if 
someone has come up with something better.

RC> Thanks,
RC> Ryan

Take a look to the jdbc-example in validator - it contains sample of
jdbc calls similar to Command pattern.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Subclass ActionServlet to behave as central controller

[Oleg V Alexeev]

Hello Peter,

Wednesday, July 18, 2001, 5:53:01 PM, you wrote:

PS> Hi ppl,

PS> Would it be possible to subclass the ActionServlet to add behaviour
PS> needed for it to behave as central controller so it could handle all the
PS> requests coming to the web application, not only the action execution
PS> requests ? In the subclassed ActionServlet I want to be able to add some
PS> logic which will determine where the request should be forwarded in case
PS> where isn't any action to be processed by ActionServlet. For example a
PS> request for /example/some_page.do could be forwarded to /some_page.jsp
PS> OR /WEB-INF/jsp/some_page.jsp. I don't want to add mappings in
PS> struts-config.xml for each page I have in the application.

Yes, of course. You can extend ActionServlet and append your own logic
to support additional behaviors.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: message masks

[Oleg V Alexeev]

Hello Renzo,

You can use -



Friday, July 06, 2001, 4:30:27 PM, you wrote:


RT> Hi there,

RT> First of all, I want to thank all Struts developers & contributors for
RT> creating such a nifty  framework. After working with it for some time now, I
RT> really miss message masks, like 'Hi {0}, welcome back'. Ok, I _could_ use a
RT> pre and suffix, but that's not very proper.

RT> Now I have found a thread (url below) on the user mailinglist, but I cant
RT> seem to find any resolution on the subject.

RT> http://marc.theaimsgroup.com/?l=struts-user&m=99400475317567&w=2

RT> So I hope you can answer my question. Do you know by any chance if someone's
RT> working on it, or should I consider this a do-it-yourself?



RT> Cheers,

RT> Renzo


RT> ps. have also posted this to the devlist, but I figure more people read this
RT> list.



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: attributes in the Bean & Logic tags - Help

[Oleg V Alexeev]

Hello Jonathan,

Friday, June 29, 2001, 4:09:04 PM, you wrote:

JA> I have been looking at the documentation and I am still not
JA> comfortable with understanding what certain attributes represent
JA> in the Bean & Logic tags. I am particularly confused with nested
JA> tags   
JA> and  these attributes:

JA> id=
JA> name=
JA> property=

Common use -
 id - name for new bean in page or (rarely) another scope
 name - name of some existing bean
 property - property (pair of setter & getter) name of some bean


JA> Could one of you kind gentlemen help with a concise yet on the
JA> money explanation. 
JA> I am understanding that the value placed in "property" will
JA> translate to a getProperty, but I am not sure which bean it
JA> pertains to?  



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re:

[Oleg V Alexeev]

Hello Stefan,

Friday, June 29, 2001, 5:15:40 PM, you wrote:

SF> Hi,
SF> I have a ArrayList in a xxxAction and make a "session.setAttribute("list",
SF> list);". How can I access to this array from the forward jsp-site? In this
SF> jsp-site I have a fallowing:
SF> 
SF> 
SF> 

SF> What do I make wrong, or do somone have another possibility.

Try to use 'name' attribute -

 
 
 

SF> Best regards,
SF> Stefan Faist



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Pager tag library

[Oleg V Alexeev]

Hello Biggs,

Friday, June 29, 2001, 10:27:40 AM, you wrote:


B> Has anyone successfully used the pager tag library from www.jsptags.com within a 
form? What I currently have is a page that contains a form that allows the user to 
perform a search for a customer,
B> based upon there criteria we return the results (in a collection) and display this 
list to the user. The problem (I believe) that I am encountering is that I am using a 
form to perform a search
B> action, and when I click upon one of the links produced by the pager, it executes 
the action of the form. 
B> http://myserver/findcust.do?pager.offset=10
B> This is one of the links produced by the pager, which returns an action:error 
message (no search results found). I am not sure exactly what I am doing wrong, but 
any assistance would greatly be
B> appreciated.

You need to store search results in sessions scope or pass search
parameters for each URL to page in pager.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Delegating the request processing to an Action class

[Oleg V Alexeev]

Hello ssuku,

Wednesday, June 27, 2001, 4:24:58 PM, you wrote:



shhc> Hi,
shhc>  How can a  request processing be delegated from an Action class to
shhc> another?

shhc> Thanks
shhc> Sandhya

Return forward to another action -

 return new ActionForward( "someaction.do" );



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Can I Use logical name for path of local forwards?

[Oleg V Alexeev]

Hello Ted,

Wednesday, June 27, 2001, 2:12:07 PM, you wrote:

TH> How about this:

TH>type="MyClass">
TH>

TH>forward="/myapp/apage.jsp"
/>>

One question here... Imagine that you have one page to view result of
two actions  -

 
  
 
 
 
  
 

But what URI can I place to the img tags to the JSP page to view
pictures without any troubles in both variants?
If I use relative path then for /maauto/quote it will be
/maauto/quote/image.gif and for another URL /maauto/another it will be
/maauto/another/image.gif. Bad choice. Try to use absolute path for
images - this way we must place our application to the root only or
always write hard coded path to the image URIs -
/application/image.gif.
How can we avoid such collision?
 
-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Sealing violation exception in Tomcat 4.0b4

[Oleg V Alexeev]

Hello struts-user,

  Has anyone answer to question about using struts in Tomcat 4.0?
  Today I try to migrate to the Tomcat 4.0b4 and all struts based
  applications throw exception at action processing step -
  
2001-06-24 19:15:00 StandardWrapperValve[action]: Servlet.service() for servlet action 
threw exception
javax.servlet.ServletException: Servlet.init() for servlet jsp threw exception
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:837)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:594)
at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:525)
at 
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:335)
at 
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:272)
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 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:254)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:194)
at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:255)
at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:225)
at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2252)
at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:446)
at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)
at 
org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at 
org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:875)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:952)
at java.lang.Thread.run(Thread.java:484)
- Root Cause -
java.lang.SecurityException: sealing violation
at java.net.URLClassLoader.defineClass(URLClassLoader.java:234)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at 
org.apache.catalina.loader.StandardClassLoader.findClass(StandardClassLoader.java:664)
at 
org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:1076)
at 
org.apache.catalina.loader.StandardClassLoader.loadClass(StandardClassLoader.java:975)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:313)
at 
org.apache.jasper.compiler.TldLocationsCache.processWebDotXml(TldLocationsCache.java:163)
at 
org.apache.jasper.compiler.TldLocationsCache.(TldLocationsCache.java:137)
at 
org.apache.jasper.EmbededServletOptions.(EmbededServletOptions.java:324)
at org.apache.jasper.servlet.JspServlet.init(JspServlet.java:263)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:818)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:594)
at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:525)
at 
o

Re: how to quote nested tags

[Oleg V Alexeev]

Hello Felix,

Thursday, June 21, 2001, 2:03:49 PM, you wrote:

FvD> 
FvD>  ^-^
FvD>   ^---^

You can use in tag attributes only run time expressions - not another
tag.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: MessageBundle

[Oleg V Alexeev]

Hello Simon,

Wednesday, June 20, 2001, 10:31:36 PM, you wrote:

SL> For some reason, Strut can't find my message bundle. For testing purpose, i
SL> have 2 language(thus 2 properties files).
SL> MyResources.properties(default for English)
SL> MyResources_fr.properties(for French)

SL> On the JSP message bean call, the default English works fine. But i can't
SL> get the French version to work. It tells me:
SL> javax.servlet.jsp.JspException: Cannot find message resources under key
SL> MyResources

SL> 
SL> 
SL> <%= userSession.getName()%>
SL> 
SL> 

SL> 
SL> 
SL> action

SL> org.apache.struts.action.ActionServlet
SL> 
SL> application
SL> MyResources
SL> 
SL> ...
SL> 

If your work with on bundle only then just remove bundle attribute
form bean:message -



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[4]: Dynamic creation of Actions's with 'forName'

[Oleg V Alexeev]

Hello Craig,

Wednesday, June 20, 2001, 8:52:18 PM, you wrote:

CRM> On Wed, 20 Jun 2001, Oleg V Alexeev wrote:

>> Hello Craig,
>> 
>> Interesting question and clear answer... 8)
>> 

CRM> Yah, I really enjoy the interesting ones :-).

>> What do you think about such caching for Class? With this approach we
>> call forName() method only once - no other overhead.
>> 

CRM> Class loaders do this kind of caching already, so I guess I don't see all
CRM> that much benefit.

CRM> For Struts in particular, if you're concerned about repeated
CRM> Class.forName() calls, a better strategy is avoidance -- arrange your
CRM> application so that the form beans are created for you ahead of
CRM> time.  Then Struts will never have to call it.

Sorry, but I have not idea how to do so. Explain please, how can I
"arrange your application so that the form beans are created for you ahead of
time"? Is it step in struts-config or no?

CRM> Or, throw you can just throw hardware at it and take advantage of Moore's
CRM> Law ... :-)

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[4]: newbie question: Missing message for key index.title e rror

[Oleg V Alexeev]

Hello John,

Remove struts.jar and all links to the WEB-INF/classes from your
classpath.

Wednesday, June 20, 2001, 2:08:28 PM, you wrote:

ONJH> Hi Oleg,

ONJH> That is the way I have it set up Unless my directory structure is wrong?

ONJH> Directory structure as follows

ONJH> web group name
ONJH>   web
ONJH> WEB-INF
ONJH>   classes

ONJH> John


ONJH> -Original Message-
ONJH> From:   Oleg V Alexeev [SMTP:[EMAIL PROTECTED]]
ONJH> Sent:   Wednesday, June 20, 2001 10:54 AM
ONJH> To: [EMAIL PROTECTED]
ONJH> Subject:Re[2]: newbie question: Missing message for key
ONJH> index.title error

ONJH> Hello John,

ONJH> Remove resources from classpath and place it to the WEB-INF/classes
ONJH> directory. For example

ONJH> WEB-INF
ONJH>   classes
ONJH>  ApplicationResources.properties
ONJH>  ApplicationResources_en.properties
ONJH>   (...place here resources for every language used in your
ONJH> app...)
  
ONJH> In resources track for string

ONJH> index.title=Some title

ONJH> in every file.

ONJH> That's all.
  
ONJH> Wednesday, June 20, 2001, 1:37:53 PM, you wrote:

ONJH> ONJH> Hi Oleg,

ONJH> ONJH> I currently have the parameters to the ActionServlet
ONJH> in web.xml as
ONJH> ONJH> follows.

ONJH> ONJH> >
ONJH> ONJH>   
ONJH> ONJH> action
ONJH> ONJH>
ONJH> org.apache.struts.action.ActionServlet
ONJH> ONJH> 
ONJH> ONJH>   application
ONJH> ONJH>   ApplicationResources
ONJH> ONJH> 
ONJH> ONJH> 
ONJH> ONJH>   config
ONJH> ONJH>   /WEB-INF/struts-config.xml
ONJH> ONJH> 
ONJH> ONJH> 
ONJH> ONJH>   debug
ONJH> ONJH>   2
ONJH> ONJH> 
ONJH> ONJH> 
ONJH> ONJH>   detail
ONJH> ONJH>   2
ONJH> ONJH> 
ONJH> ONJH> 
ONJH> ONJH>   validate
ONJH> ONJH>   true
ONJH> ONJH> 
ONJH> ONJH> 2
ONJH> ONJH>   

ONJH> ONJH> This seems to be as you are saying to have it. I also
ONJH> have the
ONJH> ONJH> classpath set to find the directory where my
ONJH> ApplicationResources.properties
ONJH> ONJH> file is and it contains the 'index.title' and other string
ONJH> property values.
ONJH> ONJH> Unfortunately this doesn't seem to solve the problem. Any
ONJH> other ideas?

ONJH> ONJH> Thanks,
ONJH> ONJH> John

ONJH> ONJH> -Original Message-
ONJH> ONJH> From:   Oleg V Alexeev [SMTP:[EMAIL PROTECTED]]
ONJH> ONJH> Sent:   Wednesday, June 20, 2001 10:19 AM
ONJH> ONJH> To: [EMAIL PROTECTED]
ONJH> ONJH> Subject:Re: newbie question: Missing message
ONJH> for key
ONJH> ONJH> index.title error

ONJH> ONJH> Hello John,

ONJH> ONJH> You must place string for key index.title to the your
ONJH> resources.
ONJH> ONJH> Name for the resource bundle is in parameter
ONJH> application in servlet
ONJH> ONJH> description for ActionServlet in web.xml.

ONJH> ONJH> Wednesday, June 20, 2001, 12:55:40 PM, you wrote:

ONJH> ONJH> ONJH> Hi Everyone,

ONJH> ONJH> ONJH> Could anyone please tell me why I am getting the
ONJH> following
ONJH> ONJH> error message
ONJH> ONJH> ONJH> when trying to run the 'blank' example that
ONJH> comes with Struts?

ONJH> ONJH> ONJH> Cheers,
ONJH> ONJH> ONJH> John


ONJH> ONJH> ONJH> Error 500
ONJH> ONJH> ONJH> An error has occured while processing
ONJH> ONJH> ONJH> request:http://localhost:8080/blank/index.jsp
ONJH> ONJH> ONJH> Message: Server caught unhandled exception from
ONJH> servlet [jsp]:
ONJH> ONJH> Missing
ONJH> ONJH> ONJH> message for key index.title

ONJH> ONJH> ONJH> Target Servlet: jsp
ONJH> ONJH> ONJH> StackTrace: 

ONJH> ONJH> ONJH> Root Error-1:

Re[2]: newbie question: Missing message for key index.title error

[Oleg V Alexeev]

Hello John,

Remove resources from classpath and place it to the WEB-INF/classes
directory. For example

WEB-INF
  classes
 ApplicationResources.properties
 ApplicationResources_en.properties
  (...place here resources for every language used in your app...)
  
In resources track for string

index.title=Some title

in every file.

That's all.
  
Wednesday, June 20, 2001, 1:37:53 PM, you wrote:

ONJH> Hi Oleg,

ONJH> I currently have the parameters to the ActionServlet in web.xml as
ONJH> follows.

ONJH> 
ONJH>   
ONJH> action
ONJH> org.apache.struts.action.ActionServlet
ONJH> 
ONJH>   application
ONJH>   ApplicationResources
ONJH> 
ONJH> 
ONJH>   config
ONJH>   /WEB-INF/struts-config.xml
ONJH> 
ONJH> 
ONJH>   debug
ONJH>   2
ONJH> 
ONJH> 
ONJH>   detail
ONJH>   2
ONJH> 
ONJH> 
ONJH>   validate
ONJH>   true
ONJH> 
ONJH> 2
ONJH>   

ONJH> This seems to be as you are saying to have it. I also have the
ONJH> classpath set to find the directory where my ApplicationResources.properties
ONJH> file is and it contains the 'index.title' and other string property values.
ONJH> Unfortunately this doesn't seem to solve the problem. Any other ideas?

ONJH> Thanks,
ONJH> John

ONJH> -Original Message-
ONJH> From:   Oleg V Alexeev [SMTP:[EMAIL PROTECTED]]
ONJH> Sent:   Wednesday, June 20, 2001 10:19 AM
ONJH> To: [EMAIL PROTECTED]
ONJH> Subject:Re: newbie question: Missing message for key
ONJH> index.title error

ONJH> Hello John,

ONJH> You must place string for key index.title to the your resources.
ONJH> Name for the resource bundle is in parameter application in servlet
ONJH> description for ActionServlet in web.xml.

ONJH> Wednesday, June 20, 2001, 12:55:40 PM, you wrote:

ONJH> ONJH> Hi Everyone,

ONJH> ONJH> Could anyone please tell me why I am getting the following
ONJH> error message
ONJH> ONJH> when trying to run the 'blank' example that comes with Struts?

ONJH> ONJH> Cheers,
ONJH> ONJH> John


ONJH> ONJH> Error 500
ONJH> ONJH> An error has occured while processing
ONJH> ONJH> request:http://localhost:8080/blank/index.jsp
ONJH> ONJH> Message: Server caught unhandled exception from servlet [jsp]:
ONJH> Missing
ONJH> ONJH> message for key index.title

ONJH> ONJH> Target Servlet: jsp
ONJH> ONJH> StackTrace: 

ONJH> ONJH> Root Error-1: Missing message for key index.title
ONJH> ONJH> javax.servlet.jsp.JspException: Missing message for key
ONJH> index.title
ONJH> ONJH> java.lang.Throwable(java.lang.String)
ONJH> java.lang.Exception(java.lang.String)
ONJH> ONJH> javax.servlet.jsp.JspException(java.lang.String) int
ONJH> ONJH> org.apache.struts.taglib.bean.MessageTag.doStartTag() void
ONJH> ONJH>
ONJH> blank._index_xjsp_jspsrc_910258570._jspService(javax.servlet.http.HttpServle
ONJH> ONJH> tRequest, javax.servlet.http.HttpServletResponse) void
ONJH> ONJH>
ONJH> org.apache.jasper.runtime.HttpJspBase.service(javax.servlet.http.HttpServlet
ONJH> ONJH> Request, javax.servlet.http.HttpServletResponse) void
ONJH> ONJH>
ONJH> javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest,
ONJH> ONJH> javax.servlet.ServletResponse) void
ONJH> ONJH>
ONJH> org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(javax.servlet
ONJH> ONJH> .http.HttpServletRequest,
ONJH> javax.servlet.http.HttpServletResponse, boolean)
ONJH> ONJH> void
ONJH> ONJH>
ONJH> org.apache.jasper.runtime.JspServlet.serviceJspFile(javax.servlet.http.HttpS
ONJH> ONJH> ervletRequest, javax.servlet.http.HttpServletResponse,
ONJH> java.lang.String,
ONJH> ONJH> java.lang.Throwable, boolean) void
ONJH> ONJH>
ONJH> org.apache.jasper.runtime.JspServlet.service(javax.servlet.http.HttpServletR
ONJH> ONJH> equest, javax.servlet.http.HttpServletResponse) void
ONJH> ONJH>
ONJH> javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest,
ONJH> ONJH> javax.servlet.ServletResponse) void
ONJH> ONJH>
ONJH> com.ibm.servlet.engine.webapp.StrictServletInstance.doService(javax.servlet.
ONJH> ONJH> ServletRequest, javax.servlet.ServletResponse) void
ONJH> ONJH

Re: newbie question: Missing message for key index.title error

[Oleg V Alexeev]

Hello John,

You must place string for key index.title to the your resources.
Name for the resource bundle is in parameter application in servlet
description for ActionServlet in web.xml.

Wednesday, June 20, 2001, 12:55:40 PM, you wrote:

ONJH> Hi Everyone,

ONJH> Could anyone please tell me why I am getting the following error message
ONJH> when trying to run the 'blank' example that comes with Struts?

ONJH> Cheers,
ONJH> John


ONJH> Error 500
ONJH> An error has occured while processing
ONJH> request:http://localhost:8080/blank/index.jsp
ONJH> Message: Server caught unhandled exception from servlet [jsp]: Missing
ONJH> message for key index.title

ONJH> Target Servlet: jsp
ONJH> StackTrace: 

ONJH> Root Error-1: Missing message for key index.title
ONJH> javax.servlet.jsp.JspException: Missing message for key index.title
ONJH> java.lang.Throwable(java.lang.String) java.lang.Exception(java.lang.String)
ONJH> javax.servlet.jsp.JspException(java.lang.String) int
ONJH> org.apache.struts.taglib.bean.MessageTag.doStartTag() void
ONJH> blank._index_xjsp_jspsrc_910258570._jspService(javax.servlet.http.HttpServle
ONJH> tRequest, javax.servlet.http.HttpServletResponse) void
ONJH> org.apache.jasper.runtime.HttpJspBase.service(javax.servlet.http.HttpServlet
ONJH> Request, javax.servlet.http.HttpServletResponse) void
ONJH> javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest,
ONJH> javax.servlet.ServletResponse) void
ONJH> org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(javax.servlet
ONJH> .http.HttpServletRequest, javax.servlet.http.HttpServletResponse, boolean)
ONJH> void
ONJH> org.apache.jasper.runtime.JspServlet.serviceJspFile(javax.servlet.http.HttpS
ONJH> ervletRequest, javax.servlet.http.HttpServletResponse, java.lang.String,
ONJH> java.lang.Throwable, boolean) void
ONJH> org.apache.jasper.runtime.JspServlet.service(javax.servlet.http.HttpServletR
ONJH> equest, javax.servlet.http.HttpServletResponse) void
ONJH> javax.servlet.http.HttpServlet.service(javax.servlet.ServletRequest,
ONJH> javax.servlet.ServletResponse) void
ONJH> com.ibm.servlet.engine.webapp.StrictServletInstance.doService(javax.servlet.
ONJH> ServletRequest, javax.servlet.ServletResponse) void
ONJH> com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(javax.servlet.
ONJH> ServletRequest, javax.servlet.ServletResponse) void
ONJH> com.ibm.servlet.engine.webapp.IdleServletState.service(com.ibm.servlet.engin
ONJH> e.webapp.StrictLifecycleServlet, javax.servlet.ServletRequest,
ONJH> javax.servlet.ServletResponse) void
ONJH> com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(javax.servlet.S
ONJH> ervletRequest, javax.servlet.ServletResponse) void
ONJH> com.ibm.servlet.engine.webapp.ServletInstance.service(javax.servlet.ServletR
ONJH> equest, javax.servlet.ServletResponse,
ONJH> com.ibm.servlet.engine.webapp.WebAppServletInvocationEvent) void
ONJH> com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(com.ibm.se
ONJH> rvlet.engine.webapp.ServletInstanceReference, javax.servlet.ServletRequest,
ONJH> javax.servlet.ServletResponse,
ONJH> com.ibm.servlet.engine.webapp.WebAppServletInvocationEvent) void
ONJH> com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(javax.servle
ONJH> t.ServletRequest, javax.servlet.ServletResponse,
ONJH> com.ibm.servlet.engine.webapp.WebAppServletInvocationEvent) void
ONJH> com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(c
ONJH> om.ibm.servlet.engine.webapp.WebAppRequest,
ONJH> javax.servlet.http.HttpServletResponse, boolean) void
ONJH> com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(javax.servlet
ONJH> .ServletRequest, javax.servlet.ServletResponse, boolean) void
ONJH> com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(javax.servlet.
ONJH> ServletRequest, javax.servlet.ServletResponse) void
ONJH> com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(java.lang.Obje
ONJH> ct) void
ONJH> com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(java.lan
ONJH> g.Object) void
ONJH> com.ibm.servlet.engine.invocation.CacheableInvocationContext.invoke(java.lan
ONJH> g.Object) void
ONJH> com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(java.lang.S
ONJH> tring, com.ibm.servlet.engine.srp.ISRPConnection) void
ONJH> com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(com.ibm.ser
ONJH> vlet.engine.oselistener.api.IOSEConnection) void
ONJH> com.ibm.servlet.engine.http_transport.HttpTransportHandler.handleConnection(
ONJH> java.net.Socket) void
ONJH> com.ibm.servlet.engine.http_transport.HttpTransportHandler.run() void
ONJH> java.lang.Thread.run() 

ONJH> Wrapped Error-2: Missing message for key index.title
ONJH> javax.servlet.ServletException: Missing message for key index.title
ONJH> java.lang.Throwable(java.lang.String) java.lang.Exception(java.lang.String)
ONJH> javax.servlet.ServletException(java.lang.Throwable) void
ONJH> org.apache.jasper.runtime.PageContextImpl.h

Re[2]: Dynamic creation of Actions's with 'forName'

[Oleg V Alexeev]

Hello Craig,

Interesting question and clear answer... 8)

What do you think about such caching for Class? With this approach we
call forName() method only once - no other overhead.

public class EntityMapping {

   protected Class cach = null;

   protected String type = null;

   public String getType() {
  return type;
   }

   public void setType( String type ) {
  this.type = type;
   }

   public Class getStub() throws ClassNotFoundException {
  if( cach!=null )
  cach = Class.forName( type );
  return cach;
   }

   public Entity getEntity() throws ClassNotFoundException {
  return getStub().newInstance();
   }
   
}


Wednesday, June 20, 2001, 12:31:03 AM, you wrote:



CRM> On Tue, 19 Jun 2001 [EMAIL PROTECTED] wrote:

>> Hi,
>> 
>> Is anyone using the STRUTS framework in a production environment yet?
>> 
>> We're currently developing a MVC based webapp and are looking at 
>> potentially taking a step backwards and basing it around STRUTS.  One area 
>> of concern is the dynamic creation of the Action objects using 'forName'.  
>> What sort of performance hit does this give?
>> 
>> Advice from our Tech Architect at the moment seems to be to look at STRUTS 
>> but write our own version and he's not too keen on 'forName' processing.  
>> Is this an unfounded concern?
>> 

CRM> There are several considerations to think about in trying to address this
CRM> concern:

CRM> * How often does it happen?  In Struts, objects are created
CRM>   dynamically only under the following circumstances:
CRM>   - The first time a particular Action class is accessed (so it's not
CRM> really relevant to discussions about performance impacts).
CRM>   - When you are a using form bean, AND the form bean does not already
CRM> exist in appropriate scope.  If you adopt a pure MVC approach (and
CRM> flow all your requests through the controller), you can easily
CRM> arrange to create form bean instances from a recyclable pool if
CRM> you want to.

CRM> * Does it matter when it does happen?  One of the most striking
CRM>   differences between modern HotSpot-based JVMs and earlier generations
CRM>   is that the cost of object creation (and the subsequent garbage
CRM>   collection) has been dramatically reduced.  I have had people who are
CRM>   pretty sharp tell me that object pooling can easily cost you more
CRM>   performance than it saves by avoiding object creations, in many
CRM>   circumstances.

CRM> * Is it worth the cost?  The point of many features of Struts (or any
CRM>   other application framework) is to accelerate development, and to
CRM>   reduce ongoing maintenance costs by making your architecture naturally
CRM>   easier to maintain.  Is this worth throwing a little extra hardware
CRM>   at the server to deal with any perceived "overhead" of object creation?
CRM>   For many people, the answer is "yes, absolutely".  And projections for
CRM>   the future cost of a developer's time, as compared to the cost of
CRM>   "x" MIPs worth of CPU time, is going to make this even more attractive.

CRM> As you can see, there's no cut-and-dried answer.  Dynamic object creation
CRM> has a cost (which can be mitigated in your application design).  So does
CRM> introspection to do the BeanUtils.populate() trick of copying request
CRM> parameters into bean properties (which vastly reduces the work needed to
CRM> create and maintain form bean classes).  Like everything, it's a balance
CRM> of cost versus benefit.  And the benefits can be quite dramatic.


>> Regards,
>> 

CRM> Craig McClanahan




-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Extending ActionServlet

[Oleg V Alexeev]

Hello TODD,

Tuesday, June 19, 2001, 5:11:49 PM, you wrote:

TH> Is there a way I can override the ActionServlet class to allow for
TH> multiple "struts-config.xml" files to be parsed for a single
TH> application? Our struts-config.xml file is getting rather large
TH> and   
TH> it would be nice if we could split the struts-config.xml into
TH> multiple .xml files and have the ActionServlet, or a descendant,
TH> be able to parse all of the config files and store the action
TH> mappings.

You can extend ActionServelt, parse multiple
struts-configs with Digester, store all stuff and work with it as with
one big config. Each config must contains  tag and
store all stuff inside of it.
And another way - you can write you own servlet to parse configs. Use
ActionServlet as base for your configs loader, parse and store all
mappings by the way, similar ActionServlet.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: forwarding to itself

[Oleg V Alexeev]

Hello salinaale,

Tuesday, June 19, 2001, 1:34:12 PM, you wrote:

sli> Hello,
sli> i have one action bean for changing language and the relative mapping 
sli> in Struts-config.xml.
sli> This mapping can be called from many page so i can't 
sli> use "mapping.findForward(mapping.getInput()) !!
sli> How can i do to to forward request to the page which from this request 
sli> comes???

You can calculate query string for current page

<%
   String sourceURL = null;
   StringBuffer URL = HttpUtils.getRequestURL(request);
   String queryString = request.getQueryString();
   if( (queryString!=null) && (queryString.length()>0) ) {
URL.append("?");
URL.append( queryString );
   }
   sourceURL = URL.toString();

%>

for example. But this will work only if you call your page directly
and not use forward from action.
If you use forward (without redirect) then you must calculate path to
redisplay page in action class, store it in request scope and use this
string as parameter for language switch. Language switch action take
this query string and make forward to it after language switching.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: General DATABASE programming question

[Oleg V Alexeev]

Hello Mindaugas,

Saturday, June 16, 2001, 10:36:45 PM, you wrote:

MI> My original goal is to ask the database for a page of information at a time.
MI> However, MS SQL server does not let you display your results starting at an
MI> offset.

MI> In my web app's search method, I load the ResultSet into a LinkedList and
MI> use the struts iterate taglib to display the results to the JSP tags pager
MI> taglib.

MI> So, I see two ways of resolving this. 1) Do the query one time and store the
MI> LinkedList in the session -- effectively caching the entire results in
MI> memory. 2) Query the database each time and skip over the first n results
MI> and discarding the last x results.

MI> Neither of these solutions are really ideal since the the ammount of results
MI> I expect to return are in 1,000 range.

MI> So, is it time to pick a better database? Thanks.

I think you have next variants -

1. Cach results in session (if you have large amount of memory - it is
   your way) or in application scope (if you use static data set).
2. Write stored proc in SQL Server -
   by the stored proc you can query database, scroll to the target row
   and return limited count of rows
3. Query database directly -
   you can scroll directly - via ResultSet.absolute(int) - if your
   JDBC driver supports scrollable result sets, or scroll manually -
   via ResultSet.next().

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: preprocess suggestion on struts change

[Oleg V Alexeev]

Hello Kiet,

Friday, June 15, 2001, 4:41:22 PM, you wrote:

KN> I think action classes should allow a method(preloadPerform) definition.
KN> This method would be called prior to the form being load.  This way we can
KN> initialize form values and do pre-process stuff.  Currently I have a link to
KN> "doSomething.do" which execute a corresponding DoSomethingAction class; the
KN> action will then redirect to actual page.  I populate the form and do some
KN> business processing in the doSomethingAction class.  Is this how it is
KN> intended to work.

KN> kiet

There is already such method in ActionServlet -
 processPreprocess

It is called before ActionForm creation and filling. In ActionServlet
it is empty - you can override it without any problems.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Internationalization (I18N) query

[Oleg V Alexeev]

Hello Sandeep,

Explain your question, please. What field name do you use? Is it label
in JSP or database fieldname? Place more info here to get good answer.

Thursday, June 14, 2001, 8:18:11 AM, you wrote:




SYPlc> Hi All,

SYPlc> This is a typical requirement about the internationalization.

SYPlc> I want to create an application to be displayed in English and Japanese.
SYPlc> Also, the user has given facility to customise some of the display field names
SYPlc> for him.

SYPlc> Now, question arises, do we need to provide the internationalization for these
SYPlc> cutomised fields.
SYPlc> What is the general trend for this and Is it feasible to do this?

SYPlc> e.g. if an english user change field name like "employee_name" to "empl_name",
SYPlc> what if next time when he logs on selecting locale as "Japanese".

SYPlc> What should we display, "empl_name" literal in english  or something else in
SYPlc> Japanese, like default setting for that field in Japanese?

SYPlc> Kindly forward your suggestion for such kind of Internationalization.

SYPlc> - Sandeep











-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: No getter method

[Oleg V Alexeev]

Hello Gus,

Wednesday, June 13, 2001, 11:03:05 PM, you wrote:

GD> I'm trying to re-write the example included in the struts package. I made
GD> some changes to the code and now when I try to bring the registration.jsp
GD> with an action="Edit". I get an error: No getter method for property
GD> mypropertyname of bean mybeanname. I change what I think is everything I
GD> needed to change to use that property (the Form bean, the Action bean, the
GD> struts-config.xml, etc) I'm missing something?

You must search changed jsp pages to find reference to 'mybeanname' or
to 'mypropertyname' from struts tags.

GD> How does struts know which property is map to which getter and setter?

With Java reflection API.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: i18n + html:link

[Oleg V Alexeev]

Hello Steve,

Wednesday, June 13, 2001, 9:10:39 PM, you wrote:

SAD>  Hello. I am trying to implement internationalized rollover buttons using
SAD> html:link. To do this, I'm trying to use quotes three levels deep and I
SAD> guess that's illegal in Javascript. For example, for "onmouseover", if I
SAD> try to extract the source name from the resource file, I try:


SAD> onmouseover="changeImage('')"

There is two strings - "changeImage('')"
Here is problem - parser treates it as two different string constants.

You can create javascript functions to implement logic and refer to it
from in onmouseover event. In javascript you can insert scriptlet code
or bean:message tags.

SAD> then I get a servlet exception:


SAD> A Servlet Exception Has Occurred

SAD> org.apache.jasper.compiler.ParseException:
SAD> /usr/apps/tomcat/jakarta-tomcat-4.0-b
SAD> 1/webapps/moria/test.jsp(55,84) Attribute header.simpleQueryImageSourceR
SAD> has no value
SAD> at
SAD> org.apache.jasper.compiler.JspReader.parseAttributeValue(JspReader.java:565)
SAD> at
SAD> org.apache.jasper.compiler.JspReader.parseTagAttributes(JspReader.java:683)
SAD> at org.apache.jasper.compiler.Parser$Tag.accept(Parser.java:826)
SAD> ...


SAD> If I hardwire the source name that I'm trying to extract, it works. For
SAD> example:

SAD> onmouseover="changeImage('simpq_en_r')"


SAD> I'm using Struts 1.0-b3. Ideas are appreciated. Thanks in advance.



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Forward Problem

[Oleg V Alexeev]

Hello Sridhar,

 Hm.. But why do you place validate="false" attribute to the action
 mapping? I think it switch off validate process.

 validateSet to "true" if the validate() method of the form bean
 should be called prior to calling this action, or set to
 "false" if you do not want validation performed.
 

Wednesday, June 13, 2001, 10:14:23 AM, you wrote:

SS> Thank U Oleg,

SS> But like I mentioned earlier if I remove the input tag, it gives me a page
SS> not found error

SS> Ne more hints???

SS> -Original Message-
SS> From: Oleg V Alexeev [mailto:[EMAIL PROTECTED]]
SS> Sent: Wednesday, June 13, 2001 1:22 AM
SS> To: [EMAIL PROTECTED]
SS> Subject: Re: Forward Problem


SS> Hello Sridhar,

SS> Try to remove 'input' attribute from action mapping. I view
SS> validate=false here - you are not use validate after form submitting -
SS> why do you specify input attribute?

SS> Here is quote from struts-config.dtd -

SS>  input   Context-relative path of the input form to which
SS> control
SS>  should be returned if a validation error is
SS> encountered.
SS>  Required if "name" is specified and the input bean
SS>  returns validation errors.  Optional if "name" is
SS>  specified and the input bean does not return validation
SS>  errors.  Not allowed if "name" is not specified.



SS> Tuesday, June 12, 2001, 5:49:55 PM, you wrote:

SS>> Hi All,

SS>> We are using Struts Version 1. We are having a problem with the forward
SS> tag
SS>> of the action defined in struts-config.xml.
SS>> No matter what is defined in the forward it is going to the page defined
SS> in
SS>> input.

SS>> I am attaching a part of the struts-config for clarity:

SS>> >type="net.itcube.bsts.user.register.RegisterFormAction"
SS>>name="registerForm"
SS>>   scope="session"
SS>>  input="/Register.jsp"
SS>>validate="false">
SS>>   
SS>> 


SS>> Once the action is performed action.findForward returns "success" (This
SS> we
SS>> checked!!!). But still the page in the above case goes to Register.jsp
SS>> instead of PostRegistration.html.

SS>> If we remove the input tag it gives a 500 page not found error.

SS>> We have successfully deployed a project on struts with an earlier
SS> version
SS>> and never faced such a problem.

SS>> Can someone please throw some light on it


SS>> Cheers,
SS>> Sridhar S
SS>> You must be the change you wish to see in the world
SS>>  --- Mahatma Gandhi.




SS> --
SS> Best regards,
SS>  Olegmailto:[EMAIL PROTECTED]






-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Forward Problem

[Oleg V Alexeev]

Hello Sridhar,

Try to remove 'input' attribute from action mapping. I view
validate=false here - you are not use validate after form submitting -
why do you specify input attribute?

Here is quote from struts-config.dtd -

 input   Context-relative path of the input form to which control
 should be returned if a validation error is encountered.
 Required if "name" is specified and the input bean
 returns validation errors.  Optional if "name" is
 specified and the input bean does not return validation
 errors.  Not allowed if "name" is not specified.



Tuesday, June 12, 2001, 5:49:55 PM, you wrote:

SS> Hi All,

SS> We are using Struts Version 1. We are having a problem with the forward tag
SS> of the action defined in struts-config.xml.
SS> No matter what is defined in the forward it is going to the page defined in
SS> input.

SS> I am attaching a part of the struts-config for clarity:

SS> type="net.itcube.bsts.user.register.RegisterFormAction"
SS>name="registerForm"
SS>   scope="session"
SS>  input="/Register.jsp"
SS>validate="false">
SS>   
SS> 


SS> Once the action is performed action.findForward returns "success" (This we
SS> checked!!!). But still the page in the above case goes to Register.jsp
SS> instead of PostRegistration.html.

SS> If we remove the input tag it gives a 500 page not found error.

SS> We have successfully deployed a project on struts with an earlier version
SS> and never faced such a problem.

SS> Can someone please throw some light on it


SS> Cheers,
SS> Sridhar S
SS> You must be the change you wish to see in the world
SS>  --- Mahatma Gandhi.




-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: javax.servlet.ServletException: Cannot find bean client in scope null

[Oleg V Alexeev]

Hello Geoffrey,

Try to specify scope to iterate tag.

Tuesday, June 12, 2001, 12:40:21 PM, you wrote:

GVN> Hi all,

GVN> I always have this error with this code in my jsp.

GVN> 

GVN> 
GVN>   
GVN> 

GVN> 
GVN> 

GVN> The problem is the "bean:write " tag inside the "logic:iterate" tag.
GVN> The "iterate" is working... and the "write" is working without the
GVN> "iterate".

GVN> What I have to do ??
GVN> Is it a bug ???

GVN> Thanks in advance,
GVN> Geoffrey...



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: multiple mapping problems

[Oleg V Alexeev]

Hello Eric,

You can use only _one_ ActionServlet in web application.

Tuesday, June 12, 2001, 2:13:22 AM, you wrote:

EWS> Hello,

EWS> I've been trying to figure out why this is happening and have had no
EWS> luck, so I figured maybe someone here could help.  I don't know if
EWS> this is a bug, or if I just don't understand the correct application
EWS> framework, etc.

EWS> I have two servlets defined in the web.xml file (servlet1 and
EWS> servlet1) of class types servletclass1 and servletclass2. Each one has
EWS> the init-param 'config' set to the same 'stuts-config.xml'.  Each
EWS> servlet has a different mapping (*.do1, *.do2).  In the
EWS> stuts-config.xml file I have two action paths defined (/path1 and
EWS> /path2) with types actionclass1 and actionclass2. The requests are
EWS> only for path1.do1 and path2.do2, never path1.do2.

EWS> When I load this, both mappings get mapped to both servlets:

EWS> Call
EWS> package.ServletClass1.addServletMapping(servlet1/java.lang.String,*.do
EWS> 1/java.lang.String)
EWS> Call
EWS> package.ServletClass1.addServletMapping(servlet2/java.lang.String,*.do
EWS> 2/java.lang.String)

EWS> then later on

EWS> Call
EWS> package.ServletClass2.addServletMapping(servlet1/java.lang.String,*.do
EWS> 1/java.lang.String)
EWS> Call
EWS> package.ServletClass2.addServletMapping(servlet2/java.lang.String,*.do
EWS> 2/java.lang.String)

EWS> Any ideas?  Should I just define a seperate stuts-config file?


EWS> _
EWS> Do You Yahoo!?
EWS> Get your free @yahoo.com address at http://mail.yahoo.com



-- 
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 Olegmailto:[EMAIL PROTECTED]

Re: Help with define tag

[Oleg V Alexeev]

Hello Chuck,

comments below...

Monday, June 11, 2001, 9:46:56 PM, you wrote:

CS> Hi,

CS> I think I'm missing something here.  I have a bean that is available to my
CS> page in the request scope.  Within that I have another bean that has
CS> properties I want to display.  I'm trying to use the define tag to get a
CS> reference to the embedded bean and I'm getting the infamous:
CS> javax.servlet.jsp.JspException: No getter method for property homeAddress of
CS> bean policyHolderInfo

CS> Here's the code -
CS> In my bean policyHolderInfo bean attached to the request obj:

CS> public AddressInfo homeAddress;

CS> public AddressInfo
CS> getHomeAddress(AddressInfo homeAddress)

wrong here^

CS> {
CS> return homeAddress;
CS> }

CS> public void
CS> setHomeAddress( AddressInfo homeAddress)
CS> {
CS> this.homeAddress = homeAddress;
CS> }

CS> My jsp tag is:
CS>  property="homeAddress" />

CS> All other getters on the policyHolderInfo bean work just fine.

CS> Am I doing something wrong or is there another way to do this?  Any
CS> suggestions would be appreciated.
CS> Thanks,
CS> Chuck

Your property support must looks like -

public AddressInfo
getHomeAddress()
{
return homeAddress;
}

public void
setHomeAddress( AddressInfo homeAddress)
{
this.homeAddress = homeAddress;
}


-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Dynamic action mapping

[Oleg V Alexeev]

Hello AFASA,

Monday, June 11, 2001, 2:50:08 PM, you wrote:

ACdP> I am looking for a way to invoke different Actions from one form
ACdP> depending on the button clicked by the user.

ACdP> Is there a simple way of configuring Struts to do this?

You can implement one of your actions as switch between other actions.
Use button name as key to choose target action and forward request
processing to it.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Where should I use .do and where .jsp for the same file

[Oleg V Alexeev]

Hello Eda,

Monday, June 11, 2001, 11:39:58 AM, you wrote:

ESE> Hi
ESE> Here is a small doubt. Please inform me where should I call a
ESE> file with .do extension and where should I call the same file
ESE> with .jsp extension.

*.do is not file - web.xml maps all requests to this extension to the
ActionServlet. ActionServlet uses information from struts-config to
process such request and uses to this purpose Action classes -



Each Action class contains perform method. ActionServlet call this one
and it returns ActionForward class to switch to appropriate page
(*.jsp) to display result of processing or error page or another
purpose page.

Another words - *.do is mapping to the Action class to perform some
activity at server and *.jsp is view to display result of such
activity.
   
-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: forward attribute

[Oleg V Alexeev]

Hello rajiv,

Monday, June 11, 2001, 3:35:13 PM, you wrote:

rm> How do i forward attributes from Action class, which can be
rm> accessed in the jsp page. so that specific error can be displayed

rm> mapping.findForward("failure");


rm> 

Add redirect attribute to the forward mapping to avoid "true" jump to
the forward page -



In Action class create objects, store it in request context and return
forward to the failure page. In failure page you can access all stored
early objects via bean-access tags - struts related or jsp:useBean.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: XML Namspace Problem

[Oleg V Alexeev]

Hello Sunil,

You must place struts.jar to the WEB-INF/lib directory and cut it from
CLASSPATH. And try to install latest jaxp1.1.

Monday, June 11, 2001, 8:36:31 AM, you wrote:

SPS> Hi group,
SPS> I am trying to using the struts framework and trying to run one example.
SPS> I am getting the following problem.
 
SPS> org.xml.sax.SAXException: Namespace not supported by SAXParser
SPS> at
SPS> org.apache.xalan.processor.TransformerFactoryImpl.newTemplates(Transform
SPS> erFactoryImpl.java:714)
SPS> at
SPS> org.apache.xalan.processor.TransformerFactoryImpl.newTransformer(Transfo
SPS> rmerFactoryImpl.java:601)
SPS> at XSLView.transform(XSLView.java:26)
SPS> at FileListingView.perform(FileListingView.java:37)
SPS> at
SPS> org.apache.struts.action.ActionServlet.processActionPerform(ActionServle
SPS> t.java:1775)
SPS> at
SPS> org.apache.struts.action.ActionServlet.process(ActionServlet.java:1574)
SPS> at
SPS> org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:490)
SPS> at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
SPS> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
SPS> at
SPS> org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
SPS> at org.apache.tomcat.core.Handler.service(Handler.java:286)
SPS> at
SPS> org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
SPS> at
SPS> org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatcher
SPS> Impl.java:194)
 
 
SPS> What could be the problem.. All the required jars are in the CLASSPATH..
 
SPS> Please let me know at the earliest.
 
SPS> Regards,
SPS> sunil




-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: template:put and get

[Oleg V Alexeev]

Hello Jim,

Sunday, June 10, 2001, 8:27:25 PM, you wrote:


JR> I decided to do the second option, it works quite well. I don't like the
JR> idea of putting the while  tag into the  because
JR> that'd make the template file confusing for someone trying to maintain it
JR> (the image tag would never appear in the source for the included file, the
JR> developer could spend ages trying to work out what's going on)

So far we have access to the values of template placeholders only via
template:get. You can write your own tag to define registered
template placeholders as page scope beans and
access such values via bean:write tags or use it in html:img tag. I
think it will be good template mechanism enhanesment.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: template:put and get

[Oleg V Alexeev]

Hello Jim,

Sunday, June 10, 2001, 9:16:18 AM, you wrote:


JR> I've got a situation where I want to include a header file with

JR> 
JR> 
JR> 

JR> and then in the header file have

JR> 

JR> but replace the page="" with the . Trouble is you can't nest 
JR> tags. One options is to do the html without the jsp, and have

JR> 

JR> but that doesn't look great, but I can't think of anything else. The 

JR> seems to hide the content away somewhere away in the request, and I don't want to
JR> create 20 little html/jsp pages for the different headers that I have.

JR> Any ideas?

You can place whole html:img tag to the template:put tag as its
content and cut content and direct attributes.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[4]: Can you do this with internationalisation.

[Oleg V Alexeev]

Hello Valery,

Saturday, June 09, 2001, 1:56:53 PM, you wrote:

VK>   Thank you for your response.
VK> I try do your solution with
VK> only litle change  (I'm beginer in struts .May be I understand you)
VK> type="some.package.LanguageAction"
VK> 
VK>name="languageForm">
VK> 
VK> It's work.

VK> But how I can know in LanguageAction url of page where I click choose
VK> language.
VK> I need this ,becouse  I want forward to page when I click choose language.


VK> When I click choose language in Category.jsp I want forward to
VK> CategoryEditAction becouse CategoryEditAction
VK> populate Category.jsp localized values from db

Place, for example, forward name to the request scope and display it
hidden value in jsp page. Every action can do it with standart way -
scan ActionMappings find itself and place action path to the request
under some name. By this name you can identify source action.

P.S. This is not standart way - I only suggest you my idea to
implement it.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Can you do this with internationalisation.

[Oleg V Alexeev]

Hello Valery,

Saturday, June 09, 2001, 11:42:43 AM, you wrote:

VK>  Hello 

VK> My boss wants to have each  web page with link of language choose.

VK> Now each page have 2 link : french and english.I define link as 
VK> 
VK> and
VK> 

1. create action to perform language switch - LanguageAction
2. create global forward mapping in struts-config for this action -

   
   

   and action mappings itself
   



3. create form to catch locale strings from request LanguageForm
   and register it in struts-config -



4. place to the jsp such links as -

 
 

VK> But I have problem with populate form .
VK> For example :
VK>For modify category page I create Action EditCategoryAction.
VK> This action populate localizable list "parent_category"  from Oracle.And forward 
to category.jsp .
VK> All ok.
VK> When I click on french or english link message replace new localized messages .But 
list still old,becouse 
VK> editCategoryAction not call again.

VK>   Problem:
VK> I want populate localized list  from action .But when I click on change language 
link 
VK> Action not called again.
VK> (Of course I can populate localizable list in jsp page .But in this case many 
logic exist on jsp page)

VK>   If anyone have this problem or know other solution help me.

-- 
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 Olegmailto:[EMAIL PROTECTED]

Re[2]: Scratch RowSets

[Oleg V Alexeev]

Hello Ted,

Good idea. Thank you.

Saturday, June 09, 2001, 12:38:37 AM, you wrote:

TH> Oleg V Alexeev wrote:
>> So I can place several  sections to the config file and
>> all stuff will be parsed. Is it right? 

TH> Yes.

TH> Are there any differences
>> between file with one big section and file with several sections in
>> case of whole content of such files is identical?

TH> A configuration file using the package format will be longer, but they
TH> are functionally equivalent. 


-- 
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 Olegmailto:[EMAIL PROTECTED]

Re[2]: Scratch RowSets

[Oleg V Alexeev]

Hello Ted,

Saturday, June 09, 2001, 12:55:04 AM, you wrote:

TH> Just as an aside, Oleg:

TH> When I use RowSets as value object beans, the type is determined by the
TH> JDBC metadata. I've been putting some wrappers around that so the
TH> properties have ordinary getters and setters. 

TH> I see that BeanFactory includes code to create tables, but what about
TH> reading tables to create beans?

Some confusion... There are SQL scripts to create sample database -
are you talk about it? If yes then my answer is below.

Each factory must implement create method to generate bean.
There are abstract class org.apache.struts.factory.jdbc.JDBCFactory -
base class for all jdbc related factories. Its create method uses
first parameter from bean template as SQL query to create
PreparedStatement and call method processResult( ResultSet...). This
method is abstract and every derived class must implement it and
JDBCArrayFactory, for example, walk throw result set and for each row
create bean of target type and call populateFrom( ResultSet ) for
every bean - this method do all work to fill new bean with values from
current row.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: struts-config.xml question

[Oleg V Alexeev]

Hello Bill,

Try to use

 
 
 

not
 
 
 
 

and restart servlet container (Tomcat, Resin, etc.) after
strut-config.xml changing (or call http://host:port/path/admin/reload)

Friday, June 08, 2001, 11:43:06 PM, you wrote:

BC> Hello,
BC>  I just am starting out with struts, and I have a question.  I 
BC> started with this syntax in my test jsp:

BC> 
BC> 
BC> 

BC> and this in my struts-config.xml:

BC>  type="com.companyname.actionform.QuestionForm"/>

BC> but I was getting this error:

BC> javax.servlet.jsp.JspException: Must specify type attribute if name is 
BC> specified

BC> #

BC> After searching this list's archives, I saw a reply to a similar 
BC> question from Craig McClanahan that states:

BC>  > If you specify name here, you must also specify type.
BC>  >
BC>  > If you change this to:
BC>  >
BC>  >  The tag will be smart enough
BC>  > to figure out what form bean name you want, without
BC>  > having to specify it both here and in struts-config.xml.
BC>  >

BC> so, to test, I specified the name in my jsp html:form tag so it looked 
BC> like this:

BC>  type="com.companyname.actionform.QuestionForm" action="insertQuestion">

BC> and this worked.

BC> #

BC> But, I don't want to have to list the classnames in the JSPs, so I tried 
BC> to follow craigs suggestion.  I changed the lines in the JSP to:

BC>   

BC> and tried this in my struts-config.xml:

BC>  type="com.companyname.actionform.QuestionForm"/>

BC>  type="com.companyname.actionmap.InsertQuestionAction"
BC> name="questionForm"
BC>scope="request"
BC> validate="false">
BC>
BC>  

BC> but now I get this error:
BC> javax.servlet.jsp.JspException: Cannot find ActionMappings or 
BC> ActionFormBeans collection

BC> I also searched on this error, but the messages I found did not seem to 
BC> match my situation.

BC> ###

BC> Since it works when I specify both the name and type in the html:form 
BC> tag, I am starting to wonder if my struts-config.xml (in my WEB-INF dir) 
BC> is being read.  Is it enough to put this file in the WEB-INF directory?

BC> Also, when I had the name in my html:form tag and the type in the 
BC> form-bean tag, it seemed obvious how these two things were linked (even 
BC> thought this was not correct).

BC> When I follow Craig's suggestion, I am unsure how "The tag will be smart 
BC> enough to figure out what form bean name you want."  Does it use the JSP 
BC> name to link to the "path" attribute of the action tag, and link the 
BC> name attribute of the action tag to the name attribute of the form-bean tag?

BC> Sorry about the length of this message, but I wanted to try to be as 
BC> specific as possible about the problem.

BC> Also, if anyone knows of any good documentation links, I am open to 
BC> suggestions.  Other than the docs on the apache site, I have only found 
BC> www.husted.com , which has lots of useful tips.  Any others out there?

BC> Thanks, Bill



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Scratch RowSets

[Oleg V Alexeev]

Hello Ted,

Friday, June 08, 2001, 8:01:31 PM, you wrote:

TH> Oleg V Alexeev wrote:
>> TH> Though, if stay on this road, larger project swill have to start
>> TH> assembling their struts-config.xml from smaller files, as some
>> TH> people do with their Applicaton Resource now. ;-)
>> 
>> My first idea was to split struts-config to 'standart' part and
>> bean-factory part with my definirions. But it is needed to insert
>> references to bean templates into action tags and it was main reason
>> to build all in one.

TH> So long as we can still use a "package" format within struts-config,
TH> that shouldn't be a problem, since people could split them up for team
TH> development and concaternate them back again as part of the build.

TH> (By package format, I mean that we can repeat the  node
TH> and all it's children as many times as needed, and still create a single
TH> ActionMapping database. I do that now and can also include David's
TH>  nodes in the same file, so that all package's
TH> programtic settings are all together.)

So I can place several  sections to the config file and
all stuff will be parsed. Is it right? Are there any differences
between file with one big section and file with several sections in
case of whole content of such files is identical?

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: reference input page from inside action?

[Oleg V Alexeev]

Hello Seth,

For example -


 return new ActionForward( mapping.getInput() );


if input attribute is defined for this action.

Friday, June 08, 2001, 9:50:25 PM, you wrote:

SL> Hello,

SL> Is it possible to reference and forward to the input page of an action from
SL> within the action?  It seems as if I have to make an explicit forward
SL> mapping for input for each action.  Sometimes, I need to do extra state
SL> checking inside action, and if that fails, to forward back to input.  The
SL> explicit forward mapping is fine, but it would seem more simple if "input"
SL> was a default mapping.

SL> Any tips or pointers would be much appreciated!

SL> Thanks,
SL> Seth



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Question on the ActionForm design for dynamic data?

[Oleg V Alexeev]

Hello Ellen,

You are speak about indexed properties. It can be defined by two ways

 1. One method for get and set operations
  public String[] getSomeProperty() {}

 2. Two methods
  public String getProperty( int index ) {}
  public void setProperty( int index, String value ) {}

  

Friday, June 08, 2001, 9:39:18 PM, you wrote:

EL> Question on the ActionForm design for dynamic data?I have scoured this list 
unsuccessfully for an answer, and this email seemed the best starting point so I am 
responding to it with the question
EL> I have:

>>From what I can tell, this only explains how to iterate over a collection to create 
>a form with a dynamic number of rows.  What I cannot find an answer to is how does 
>the ActionForm need to be set
>>up to handle population with the input field values from those rows when this form 
>is submitted?  Does it simply need a "public void setCustomerContacts(Vector 
>customerContacts)"?  Will Struts then
>>populate the Vector with CustomerContact objects?  Or does it need set() methods to 
>accept Vectors of each individual column's values?

EL> Thanks,
EL> Ellen
EL>   - Original Message - 
EL>   From: Jeff Trent 
EL>   To: [EMAIL PROTECTED] 
EL>   Sent: Sunday, May 20, 2001 5:11 AM
EL>   Subject: Re: Question on the ActionForm design for dynamic data?


EL>   (1) Have a Vector / Collection of contributors (ie. getContributors()) belonging 
to your form.  Inside that function, check to see if you need more rows by using code 
similar to the following:

EL>   public Vector getCustomerContacts()
EL>   {
EL>   CustomerContact lastCustomerContact = 
(CustomerContact)this.customerContacts.lastElement();
EL>   if (!lastCustomerContact.isEmpty())  
  // is this slot being used?
EL>   this.customerContacts.addElement(new CustomerContact());// 
always have one available slot at the end of the matrix
  
EL>   return this.customerContacts;
EL>   }

EL>   (2) Do not use the reset() method.

EL>   (3) On your JSP, use code like this:
EL>   <% int i = 0; %>
EL>   
EL>  
EL>   
EL>   
EL>   
EL>  
EL>  <% i++; %>
EL>   

EL>   (4) Have a button on the form "Add more rows" in which case the form posts to 
itself and will cause a new row to be added at the bottom of the grid.
   
   
EL>   Hope this help,
EL>   Jeff
   
EL> - Original Message - 
EL> From: Joyce Tang 
EL> To: [EMAIL PROTECTED] 
EL> Sent: Saturday, May 19, 2001 11:28 PM
EL> Subject: Question on the ActionForm design for dynamic data?


EL> Here is the situation. 

EL> I am developing a system to maintain a contribution plan.  I need to input the 
plan information first and add unlimited number of contributors, specifying each share 
of the plan.  So there
EL> will be a page with contribution plan information and a list of all the 
contributors.  The information you can edit on this page is the percentage of share of 
each contributor. Validation rules
EL> are: share need to add up to 100 and share figure is an integer between 0 and 100. 
  Since the number of contributors is unknown in advance, how should I design the 
ActionForm?

EL> Thanks a lot, 

EL> Joyce 




-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: html errors tag not displaying content

[Oleg V Alexeev]

Hello Chris,

To use this tag you must, of course add html taglib definition to the
page and add two strings to properties files with resources for
MessageResources container. Another words - you must add such strings
as

errors.header=
errors.footer=

to the properties package. It is described in web.xml in ActionServlet
definition section as "application" -


  application
  some.org.package.ApplicationResources



Friday, June 08, 2001, 7:08:05 PM, you wrote:

CW> hello,

CW> i just upgraded to struts beta 3.  i have an application that was
CW> working just fine using the struts errors tag.  after the upgrade, i no
CW> longer see any error messages.  on my jsp, i have a line:

CW> 

CW> that outputs no content...  however, the following line right below
CW> shows the proper error:

CW> <%=
CW> ((ActionError)((ActionErrors)request.getAttribute(Action.ERROR_KEY)).get
CW> ().next()).getValues()[0] %>

CW> so, i know the ActionErrors object is getting to the page and that it
CW> has my errors in it, but  is not showing them.

CW> any idea as to what might be going on?

CW> thanks for any help.

CW> cheers,
CW> chris

CW> | chris wilson || web dev ||| [EMAIL PROTECTED] || |
CW> www.wondergeek.com | | 




-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Reset the form

[Oleg V Alexeev]

Hello Kiet,

Friday, June 08, 2001, 9:08:07 PM, you wrote:

KN> I have my reset button defined:

KN> 
KN> >

KN> Why is that the reset method doesn't get call and the Action class get
KN> executed.

You can not call reset method by this way. It is called automatically
by ActionServlet after form submitting in browser and before filling
of ActionForm by values from request.
-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: displaying html errors in order

[Oleg V Alexeev]

Hello Chico,

Friday, June 08, 2001, 7:50:27 PM, you wrote:

CC> i can display errors fine, but they are displayed not in the same order as i
CC> created them ...
 
CC> I see this is because the ActionErrors class uses a HashMap and therefore
CC> doesn't return them in a given order (i think it sorts them according to the
CC> hashcode value).
 
CC> I can use the property tag in html:errors tag to display each error
CC> individually, but then it displays my error header and footer for each error
CC> displayed ...
 
You can write your own version of ActionErrors and use ArrayList in
it, for example, not HashMap. 

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Help with selecting an image to display.

[Oleg V Alexeev]

Hello Alex,

Friday, June 08, 2001, 4:17:37 PM, you wrote:

AC> Hi, I am looking for advice regarding the use of two images.

AC> Lets say you have a class status that has two boolean state properties
AC> isModify() and isNew(). If isModify() returns true then I want to display
AC> modify.gif and call the JavaScript function modify() and, if isNew() is true
AC> then I want to display new.gif and also call modify().

AC> Anyone have an example of this or could offer some advice?

Name your properties as getIsModify() and getIsNew() and after that
you can use such constructions as -


 display modify.gif


-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Scratch RowSets

[Oleg V Alexeev]

Hello Ted,

Friday, June 08, 2001, 3:30:31 PM, you wrote:

TH> Defining the SQL commands in struts-config.xml is definately a
TH> leap-forward (I missed link to the sample WAR at first, and 
TH> didn't see how you were implementing everything.)

It is very simple model. For every action can be defined list of
bean/factory mappings and at request processing phase Servlet scan
this mappings, create bean by specified factory for every mapping and
store this bean in request or session scope. Every bean definition
(in struts-config) focus on some factory family (for example JDBC
factories, Castor factories, etc.).
JDBC factories use simple mechanism to retrieve data - perform SQL
query, create bean of specified type and call special method for every
row -

 bean.populateFrom( ResultSet rs )

to fill bean with values from row.

TH> Though, if stay on this road, larger project swill have to start
TH> assembling their struts-config.xml from smaller files, as some 
TH> people do with their Applicaton Resource now. ;-)

My first idea was to split struts-config to 'standart' part and
bean-factory part with my definirions. But it is needed to insert
references to bean templates into action tags and it was main reason
to build all in one.

TH> The bean factory proposal seems excellent, and I'm going to try 
TH> and take a closer at it this weekend. 

TH> < http://www.sura.ru/~gonza/bean-factory/ >

I'l build next revision at Saturday and notify community about it
shortly.

TH> It's an exciting idea, and works well with the J2EE patterns I'm 
TH> using now. 

TH> Being able to define the various beans we need in XML could bring 
TH> a real productivity boost to a lot of Struts developers, myself 
TH> included. I'm also getting ready to do something about a code 
TH> generator, which could work well with a factory like this.

TH> Incidentally, getting this to work is a real testament of how
TH> easy Java app configuration can be. Edited two lines 
TH> in struts-config.xml and I'm up and running with some other 
TH> DBMS.

Yes. I change datasource definition and some SQL queries in
bean-templates - and all application is moved from MySQL to DB2.

TH> -- Ted Husted, Husted dot Com, Fairport NY USA.
TH> -- Custom Software ~ Technical Services.
TH> -- Tel 716 737-3463.
TH> -- http://www.husted.com/about/struts/

TH> Oleg V Alexeev wrote:
>> TH> Speaking of configuration issues, I've also played with the idea of
>> TH> loading SQL commands from a resource, so they could be changed and
>> TH> reloaded without restarting the application. It would also be easier to
>> TH> optimize command sets for different DBMS packages. Just wondering if
>> TH> anyone else has implemented a SQL command resource.
>> 
>> I already implement this as part of my bean generation framework. It
>> contains JDBC bean factories (for single row, for all rows from result
>> set, for window from the result set) and bean-templates (may be wrong
>> term, of course) in which SQL queries can be defined. At bean creation
>> process factory uses attributes, properties and parameters from
>> request (all needed for this bean=template) and conserves result in
>> session or request scope to display with jsp page.




-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: JSP expressions inside custom tags

[Oleg V Alexeev]

Hello Erich,

Friday, June 08, 2001, 12:56:42 PM, you wrote:

EM> My code looks like this:

EM> 
EM>  <% String name = ((PElement)pelement).getName(); %>
EM>  
EM>^^^ Here is my problem!
EM> 
EM>  
EM> 

try this -

 
   
 


-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Struts Beta 03 Build Problem

[Oleg V Alexeev]

Hello David,

Friday, June 08, 2001, 9:06:12 AM, you wrote:

DM> Any idea why I am consistently getting an 
"org.apache.tools.ant.taskdefs.optional.TraXLiason" ClassNotFoundException when trying 
an "ant dist" build of jakarta-struts-1.0-b3-src using Ant 1.3 on
DM> both NT and Linux?  I have what seem to be the only required jars in my path: 
xalan.jar and jaxp.jar from jaxp-1_1.zip, and jdbc2_0-stdext.jar, with jdk1.3.1?

Place crimson.jar, jaxp.jar, xalan.jar files from jaxp-1_1.zip to the
jdk extension dir - x:\jdk1.3.1\jre\lib\ext for example.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Problem with Form Default Values

[Oleg V Alexeev]

Hello Owais,

There are already some messages in list form ServletExec users with
count of problems, but this problems not exist in another
containers May be this is answer to your question.
Try to download latest beta of struts if have not one.

Friday, June 08, 2001, 4:13:55 AM, you wrote:

OA> Hello,

OA> I am having problems with my jsp page. If I do not specify a default
OA> value (value="any value") for the fields in my page, I get the following
OA> exception. I have written all the getter and setter methods in my
OA> FormBean and carefully checked for the naming convention as well. If I
OA> specify any defaule value in my jsp page, then this issue does not show
OA> up. However, specifying a default value does not allow to refresh the
OA> page with latest values in case of errors.

OA> The exception that I get is:

OA> javax.servlet.jsp.JspException
OA> at
OA> org.apache.struts.util.RequestUtils.lookup(RequestUtils.java:234)
OA> at
OA> org.apache.struts.taglib.html.BaseFieldTag.doStartTag(BaseFieldTag.java:
OA> 220)
OA> at
OA> pagecompile._DPMSOLDBQOnlineReport_xjsp._jspService(_DPMSOLDBQOnlineRepo
OA> rt_xjsp.java:422)
OA> at
OA> com.newatlanta.servletexec.JSP10HttpJspPage.service(JSP10HttpJspPage.jav
OA> a)
OA> at
OA> com.newatlanta.servletexec.JSP10Servlet.service(JSP10Servlet.java)
OA> at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
OA> at
OA> com.newatlanta.servletexec.ServletExec.CallServletService(ServletExec.ja
OA> va)
OA> at
OA> com.newatlanta.servletexec.SERequestDispatcher.forward(SERequestDispatch
OA> er.java)
OA> at
OA> com.newatlanta.servletexec.SERequestDispatcher.forward(SERequestDispatch
OA> er.java)
OA> at
OA> org.apache.struts.action.ActionServlet.processActionForward(ActionServle
OA> t.java:1697)
OA> at
OA> org.apache.struts.action.ActionServlet.process(ActionServlet.java:1540)
OA> at
OA> org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:491)
OA> at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
OA> at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
OA> at
OA> com.newatlanta.servletexec.ServletExec.CallServletService(ServletExec.ja
OA> va)
OA> at
OA> com.newatlanta.servletexec.SERequestDispatcher.forward(SERequestDispatch
OA> er.java)
OA> at
OA> com.newatlanta.servletexec.ApplicationInfo.processApplRequest(Applicatio
OA> nInfo.java)
OA> at
OA> com.newatlanta.servletexec.ServerHostInfo.processApplRequest(ServerHostI
OA> nfo.java)
OA> at
OA> com.newatlanta.servletexec.ServletExec.ProcessRequest(ServletExec.java)
OA> at
OA> com.newatlanta.servletexec.ServletExec.ProcessRequest(ServletExec.java)


OA> Anybody has a clue to what might be going wrong in all this?

OA> Thanks and warm regards,
OA> Owais




-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Logic Tag Library and (Iterator) List Navigation

[Oleg V Alexeev]

Hello Matt,

Pager - this one
PagerIterator - iterator to review Pager without cach
PagerEntry - link to page representation
JDBCPagerFactory - sample of Pager utilization
pager.jsp - displaying of pager data and current page

Friday, June 08, 2001, 12:17:19 AM, you wrote:

MR> Please send it - and an example if you have one.

MR> Thanks,


-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]
 PagerIterator.java
 PagerEntry.java
 Pager.java
 JDBCPagerFactory.java
 pager.jsp

Re[2]: Scratch RowSets

[Oleg V Alexeev]

Hello Ted,

Thursday, June 07, 2001, 9:52:24 PM, you wrote:

TH> Speaking of configuration issues, I've also played with the idea of
TH> loading SQL commands from a resource, so they could be changed and
TH> reloaded without restarting the application. It would also be easier to
TH> optimize command sets for different DBMS packages. Just wondering if
TH> anyone else has implemented a SQL command resource.

I already implement this as part of my bean generation framework. It
contains JDBC bean factories (for single row, for all rows from result
set, for window from the result set) and bean-templates (may be wrong
term, of course) in which SQL queries can be defined. At bean creation
process factory uses attributes, properties and parameters from
request (all needed for this bean=template) and conserves result in
session or request scope to display with jsp page.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Can I have NO action?!

[Oleg V Alexeev]

Hello dhay,

>From your words I found that you want to make -
 in Action
   - retrieve current filename
   - forward to the JSP page to display it
 in JSP page
   - edit current filename
   - submit new value to the action
 in Action
   - take new value
   - build or retrieve filter for new file
   - forward to the JSP
 in JSP
   - review filter
   - edit other values or just stay here

Is it right?

Thursday, June 07, 2001, 11:50:04 PM, you wrote:



dlc> Oleg,

dlc> Hi.  Thanks for the post.  The current file name is set in my action before the
dlc> page is called.  BUT, I want to give the user the option to change the filename,
dlc> and forward back to this action to display the filter for the new file.  Hence,
dlc> my action doesn't need to DO anything, which prompted my question (I just need
dlc> Struts to set the filename property in my form bean).

dlc> Any ideas whether this is possible, or do I need to have a dummy action for it?

dlc> Thanks,

dlc> Dave




-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Logic Tag Library and (Iterator) List Navigation

[Oleg V Alexeev]

Hello Matt,

I can send you Pager class, used to generate ArrayList of links to the
pages in this result set, and a piece of jsp code to display it. I
think it can used for any container wich implements Collection
interface.

Thursday, June 07, 2001, 5:57:12 PM, you wrote:

MR> Has anyone used  to display a list of records, and
MR> corresponding list navigation links at the bottom?

MR> For instance, I have an Iteration of DataObjects that I can list through
MR> with the following code:

MR> while (iteratorName.hasNext()) {
MR> dataObject = (DataObject)iteratorName.next();
MR> out.println(dataObject.getName());
MR> }

MR> I'm assuming I can do this with the Iterator tag, however, I would also like
MR> to display the following at the bottom of the list:

MR> First  |  1-10  |  11-20  |  20-30  | Last

MR> Where there are 30 records returned.

MR> Any ideas?

MR> Thanks,

MR> Matt


MR> _
MR> Do You Yahoo!?
MR> Get your free @yahoo.com address at http://mail.yahoo.com



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: exception in MessageTag.doStartTag()

[Oleg V Alexeev]

Hello RoleModel,

Yes, it is another common error. To use bean:message tag you must
place properties files for all supported languages to the path
WEB-INF/classes or to the some jar in WEB-INF/lib derectory and place
string with properties path to the web.xml as init parameter for
ActopnServlet -


  application
  my.app.ApplicationResources


For this example you must place properties files to the path
WEB-INF/classes/my/app and fill it with all messages wich used in your
pages with bean:message tag.


Thursday, June 07, 2001, 5:03:17 PM, you wrote:

RS> We have struts.jar in /WEB-INF/lib/

RS> I believe that everthing is in the classpath... but that we probably have a
RS> configuration problem in one of our files.
RS> The immediate problem that I see in the doStartTag() method is that the
RS> message we get back is null.

RS> - Original Message -----
RS> From: "Oleg V Alexeev" <[EMAIL PROTECTED]>
RS> To: "RoleModel Software" <[EMAIL PROTECTED]>
RS> Sent: Thursday, June 07, 2001 1:06 AM
RS> Subject: Re: exception in MessageTag.doStartTag()


>> Hello RoleModel,
>>
>> Thursday, June 07, 2001, 1:44:37 AM, you wrote:
>>
>> RS> We're just starting to learn about Struts. We have downloaded the code
RS> (and binaries) (v.b3) for struts-example. The binaries run fine, and we get
RS> the expected output. When we try to set up the
>> RS> source version, though, we get the following error:
>>
>> RS>   javax.servlet.jsp.JspException
>> RS> java.lang.Throwable(java.lang.String)
>> RS> java.lang.Exception(java.lang.String)
>> RS> javax.servlet.jsp.JspException(java.lang.String)
>> RS> int org.apache.struts.taglib.bean.MessageTag.doStartTag()
>> RS> void
RS> _0002findex_0002ejspindex_jsp_0._jspService(javax.servlet.http.HttpServletRe
RS> quest, javax.servlet.http.HttpServletResponse)...
>>
>> RS> Can anybody give us a clue about what's going on? As far as we can
RS> tell, we've got everything configured properly, but we're guessing we made a
RS> mistake somewhere.
>>
>> I think you place struts.jar to the CLASSPATH. struts.jar must be placed
>> to the WEB-INF/lib directory of your application, remove any
>> references to it from CLASSPATH.
>>
>> If struts.jar in WEB-INF/lib , CLASSPATH is free of links to the
>> struts.jar and you are already has this exception then explane please
>> your problem.
>>
>> --
>> Best regards,
>>  Olegmailto:[EMAIL PROTECTED]
>>
>>



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Scratch RowSets

[Oleg V Alexeev]

Hello Ted,

Thank for good stub. Now I am trying to implement such approach in my
extension to struts - BeanFactoryServlet.

Thursday, June 07, 2001, 3:38:30 PM, you wrote:

TH> Ted Husted wrote:

TH>  skipped


-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Problem with nested html:form

[Oleg V Alexeev]

Hello Marc,

Thursday, June 07, 2001, 2:20:28 AM, you wrote:



>>I do not believe that you are allowed to have nested >forms in html (though
>>correct me if I'm wrong!).
>>
>>Dave

ME> But we need something like nested forms, because we have actions for a list
ME> of objects and actions for a single one of these objects.

ME> Do you have any idea how to realize it in an other way.

I think you can use such approach as -









    
    
    
    
    
    





Insert direct references to the form object in tags and behavior of
your code will be more definitely.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: exception in MessageTag.doStartTag()

[Oleg V Alexeev]

Hello RoleModel,

Thursday, June 07, 2001, 1:44:37 AM, you wrote:

RS> We're just starting to learn about Struts. We have downloaded the code (and 
binaries) (v.b3) for struts-example. The binaries run fine, and we get the expected 
output. When we try to set up the
RS> source version, though, we get the following error: 

RS>   javax.servlet.jsp.JspException
RS> java.lang.Throwable(java.lang.String)
RS> java.lang.Exception(java.lang.String)
RS> javax.servlet.jsp.JspException(java.lang.String)
RS> int org.apache.struts.taglib.bean.MessageTag.doStartTag()
RS> void 
_0002findex_0002ejspindex_jsp_0._jspService(javax.servlet.http.HttpServletRequest, 
javax.servlet.http.HttpServletResponse)...

RS> Can anybody give us a clue about what's going on? As far as we can tell, we've got 
everything configured properly, but we're guessing we made a mistake somewhere.

I think you place struts.jar to the CLASSPATH. struts.jar must be placed
to the WEB-INF/lib directory of your application, remove any
references to it from CLASSPATH.

If struts.jar in WEB-INF/lib , CLASSPATH is free of links to the
struts.jar and you are already has this exception then explane please
your problem.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Can I have NO action?!

[Oleg V Alexeev]

Hello dhay,

Thursday, June 07, 2001, 1:34:00 AM, you wrote:

dlc> Hi.  I have a form where I display the current filename, and allow them to
dlc> change it.  As such, I don't need to do anything in the action, just let Struts
dlc> populate the form bean.

dlc> How do I go about this?  Do I need an action that does nothing in its perform
dlc> method?  Or can I set things up so no action is needed at all?

What is the source of current filename? Do you retrieve it in your
form class? It is wrong solution if so.

Struts uses scheme with Action class (contains all logic to retrieve,
process and store data), ActionForm class (used to store values
between pages or actions and to validate it after submit), JSP-page as
view (to display values which was processed by Action class and stored
in session or request scope). According to this scheme you need to
implement action if you display by JSP any values fetched from
external source.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Scratch RowSets

[Oleg V Alexeev]

Hello Steve,

Thank you, good paper.

Thursday, June 07, 2001, 12:31:52 AM, you wrote:

SS> Take a look at sun's CachedRowSet now available in early release.

SS> http://www.javaworld.com/javaworld/jw-02-2001/jw-0202-cachedrow.html

SS> S-


-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Pleeeeease help me using the Digester-Class of STRUTS

[Oleg V Alexeev]

Hello Hartmut,

You must implement such method to use it in digester -

de.dhw.asim.components.benutzer.LoginObjekt.addGrp(de.dhw.asim.components.benutzer.BenutzerGruppe)

Wednesday, June 06, 2001, 11:05:06 PM, you wrote:

HB> Hello,


HB> it seems that the Digester Class of Struts is a strange thing.
HB> I take the following XML-Document (in a String):

HB> 
HB> hilfe="true"
HB>rn="Hartmut Bernecker"
HB>mail="[EMAIL PROTECTED]"
HB>txt="Persoenlicher Begruessungstext des Benutzers"
HB>spr="de"
HB>med="medium">
HB>   
HB>   
HB> 

HB> --


HB> Then I want to parse it with a Digester object as follows:


HB> --
HB> Digester digester = new Digester();
HB> digester.setDebug(1);
HB> digester.setValidating(false);

HB> digester.push(this);

HB> digester.addObjectCreate("login/grp",
HB> "de.dhw.asim.components.benutzer.BenutzerGruppe");
HB> digester.addSetProperties("login/grp");
HB> digester.addSetNext("login/grp", "addGrp",
HB> "de.dhw.asim.components.benutzer.BenutzerGruppe");

HB> digester.addObjectCreate("login",
HB> "de.dhw.asim.components.benutzer.LoginObjekt");
HB> digester.addSetProperties("login");
HB> digester.addSetNext("login", "setLoginObjekt",
HB> "de.dhw.asim.components.benutzer.LoginObjekt");

HB> try {
HB>  digester.parse(new InputSource(new StringReader(pXml)));
HB> }
HB> catch (IOException e){
HB>   e.printStackTrace();
HB> }
HB> catch (SAXException e)
HB> {
HB>   e.printStackTrace();
HB> }

HB> --


HB> Then I receive the following Message:
HB> It seems that the stack can not be controlled.
HB> Please give me an idea of what happens here and how to do it in the
HB> right way!!

HB> --

HB> New de.dhw.asim.components.benutzer.LoginObjekt

HB> Set de.dhw.asim.components.benutzer.LoginObjekt properties

HB> New de.dhw.asim.components.benutzer.BenutzerGruppe

HB> Set de.dhw.asim.components.benutzer.BenutzerGruppe properties

HB> Call
HB> 
de.dhw.asim.components.benutzer.LoginObjekt.addGrp(de.dhw.asim.components.benutzer.BenutzerGruppe@683912)

HB> End event threw exception

HB> java.lang.NoSuchMethodException

HB> at java.lang.Class.getMethod0(Native Method)

HB> at java.lang.Class.getMethod(Class.java:888)

HB> at org.apache.struts.digester.SetNextRule.end(SetNextRule.java:156)

HB> at org.apache.struts.digester.Digester.endElement(Digester.java:409)

HB> at
HB> org.xml.sax.helpers.XMLReaderAdapter.endElement(XMLReaderAdapter.java:347)

HB> at org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java:1403)

HB> at
HB> 
org.apache.xerces.validators.common.XMLValidator.callEndElement(XMLValidator.java:1436)

HB> at
HB> 
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1205)

HB> at
HB> 
org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)

HB> at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1035)

HB> at
HB> org.xml.sax.helpers.XMLReaderAdapter.parse(XMLReaderAdapter.java:223)

HB> at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)

HB> at org.apache.struts.digester.Digester.parse(Digester.java:738)

HB> at
HB> de.dhw.asim.components.benutzer.Xml2Object.getUserObjekt(Xml2Object.java:49)

HB> at de.dhw.asim.components.benutzer.Test.main(Test.java:11)

HB> java.lang.NoSuchMethodException

HB> at org.apache.struts.digester.Digester.endElement(Digester.java:412)

HB> at
HB> org.xml.sax.helpers.XMLReaderAdapter.endElement(XMLReaderAdapter.java:347)

HB> at org.apache.xerces.parsers.SAXParser.endElement(SAXParser.java:1403)

HB> at
HB> 
org.apache.xerces.validators.common.XMLValidator.callEndElement(XMLValidator.java:1436)

HB> at
HB> 
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(XMLDocumentScanner.java:1205)

HB> at
HB> 
org.apache.xerces.framework.XMLDocumentScanner.parseSome(XMLDocumentScanner.java:381)

HB> at org.apache.xerces.framework.XMLParser.parse(XMLParser.java:1035)

HB> at
HB> org.xml.sax.helpers.XMLReaderAdapter.parse(XMLReaderAdapter.java:223)

HB> --


HB> Any help is very appreciated!

HB> Hartmut



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Compositing Actions

[Oleg V Alexeev]

Hello Andrew,

May be another way is solution of your problem... Now I work under
extension of struts to support so named 'bean-factories'. Idea is to
create pluggable framework to support mechanism of data bean
generation (for example, retrieved from database) based on
declarations in struts-config.xml.
There are some terms in my concept -
 bean-factory - java class intended to create beans
 bean-template - bean description (type, name, parameters needed to
 create such bean)
 bean-registration - additional tag inside action mapping - creates
 link between bean-template and bean-factory
 
 BeanFactoryServlet extends ActionServlet and uses information from
 struts-config.xml to create beans from bean-registraions list in
 action and store this beans in request of session scope. All this
 beans avaiable to jsp-page to show this beans. Every action can hold
 list of bean-registrations and every of such registrations can use
 anyone factory and anyone bean-template.

I publish first version with sample web-application some days ago -
you can download it and review for your needs.

http://www.sura.ru/~gonza/bean-factory

Wednesday, June 06, 2001, 6:11:09 PM, you wrote:

AJ> Is there a straightforward way to locate and invoke an Action from within
AJ> the perform() method of another Action?  The reason I would like to do this
AJ> is to create a "composite" Action from a number of other "component"
AJ> Actions--these component Actions must be available individually in the
AJ> Struts application, however I would like to provide a composite Action that
AJ> requires objects placed in the request attributes by the component Actions.

AJ> Thanks in advance,

AJ> --Andy

AJ> Andy Jenkins
AJ> Venetica Corporation (www.venetica.com)
AJ> Voice: 704.926.3080
AJ> [EMAIL PROTECTED]



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Scratch RowSets

[Oleg V Alexeev]

Hello Ted,

One question here... For example I want to use rowset in iterate tag -
but database connection must be opened before iterate using and closed
after it in this case. Is it right? If yes, then how it works in MVC
framework? In Action - rows are retrieved from database and as attribute
passed via session or request to the forwarded jsp page - I mainly use
this approach to display data from database. I try to use rowset after
closing of the connection to the database but exception was raised and
I mark this way as error...
What method are you use to work with rowsets in iterate tag? Open
connection, make rowset, iterate, close rowset and connection? Or
another way exists?

Wednesday, June 06, 2001, 4:09:03 PM, you wrote:

TH> The documentation for the Early Release of CachedRowSets mentions that 

TH> "Because both a CachedRowSet object and its metadata can be created from
TH> scratch, a component
TH> that acts as a factory for rowsets can use this capability to create a
TH> rowset containing data from
TH> non-SQL data sources."

TH> has anyone here tried this yet?

TH> The idea being I would like to transfer incoming properties from an
TH> ActionForm into a scratch RowSet, and use that as the value object.
TH> (Perhaps within a wrapper or a facade so business logic methods can be
TH> added.)

TH> There will be expanded support for RowSets in 1.1, and I wanted to get
TH> started on some support utilities / design patterns before looking at
TH> what other modifications will be needed. 

TH> I put together a quick Iterate wrapper that works fine with a returned
TH> RowSet, but also need to create a new RowSet from scratch to close the
TH> loop. I guess the thing to try is to create a MetaDataRowSet object and
TH> pass that to a new RowSet (instead of making the SQL call), and then see
TH> if I can insert a row.

TH> -- Ted Husted, Husted dot Com, Fairport NY USA.
TH> -- Custom Software ~ Technical Services.
TH> -- Tel 716 737-3463.
TH> -- http://www.husted.com/about/struts/



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: a struts tag within another struts tag ...

[Oleg V Alexeev]

Hello Chico,

Wednesday, June 06, 2001, 12:08:38 PM, you wrote:


CC> does anyone know a way of doing something like so, so that it works:

CC> 
CC> >"/>
CC> 

You can not use one tag in attribute value of another tag for jsp tag
libraries. Another words - if you use one tag then you can place to
the attributes as values only strings or run-time expressions like
<%= %> for attributes marked as true

CC> i always get a error saying that listElement has no value in that scope ...

CC> i get around this problem using jsp, like so:

CC> 
CC> <% String myListElement = (String)
CC> pageContext.findAttribute("listElement");%>
CC>  value="<%=myListElement%>"/>
CC> 

CC> But I really don't want to be mixing jsp with struts ...

CC> any ideas?

CC> chico




-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Extention of struts - BeanFactory

[Oleg V Alexeev]

Hello Craig,

Saturday, June 02, 2001, 7:41:43 PM, you wrote:

CRM> To keep things organized, can I ask a favor?  Can we have discussions of
CRM> 1.1 feature design on the STRUTS-DEV list?  The STRUTS-USER list has lots
CRM> of traffic about using Struts already, and talking about the new stuff
CRM> here will be a little distracting.

CRM> Anyone, of course, is welcome to subscribe to STRUTS-DEV to participate in
CRM> (or just lurk on) the discussions of the new features.

Yes, of course, Craig.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: Proposed feature: Bean property transformations

[Oleg V Alexeev]

Hello Ted,

Saturday, June 02, 2001, 1:30:00 AM, you wrote:

TH> "Harris, Andrew S" wrote:
>> A component would be able to hold a text value and a data value. The text
>> value could hold the value entered by the user, prior to validation, then
>> this could be played back to the user if validation failed on that
>> component. If validation succeeded, the data value would be updated, then
>> the text value would be replaced by the formatted value, using the data
>> value and the formatter.

TH> This is a good design pattern, and one we can use with Struts today. In
TH> the ActionForm bean, define two properties, one for the text value and
TH> one for the data value. If validation succeeds, convert the text value
TH> to the data value, and (optionally) update the text value to match your
TH> preferred formatting. 

TH> Though, with a general conversion/transformation package, we would
TH> really only need to store the desired data value since we could
TH> transform it again later when the value was accessed for presentation,
TH> perhaps via a bean:writeTransform tag.

What reason to store text values and data values in ActionForm? I
think that more flexible approach is to use ActionForm with text only
fields and data bean with native types, not String. In this case we
can name all corresponded fields in data bean with same names as for
ActionForm and use convert methods under it, for example, or use
another convert methods.
 We can convert text values to/from with one of the ways -
 1. Perform conversion of all fields in some method in ActionForm, for
example import/export.
 2. Make it in every setter/getter.
 3. Write special helper class to perform conversion - in this case
more flexible approach can be used - one helper can handle
multiple sources and targets.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Extention of struts - BeanFactory

[Oleg V Alexeev]

Hello struts-user,

  I am glad to publish pre-alpha version of
  BeanFactory - extention of struts framework,
  intended to simplify processes of data publishing.
  
  Main idea of it - to move functionality to declarations.

  You can find short info about BeanFactory, sources, precompiled
  binaries and sample web allication (needs some configure in database
  access) at page -
   http://www.sura.ru/~gonza/bean-factory

-- 
Best regards,
 Oleg  mailto:[EMAIL PROTECTED]

Re: Date formatting (simple question)

[Oleg V Alexeev]

Hello Matthew,

Thursday, April 12, 2001, 5:55:21 AM, you wrote:

MOH> Can I format java.util.Date presentations with , or do I need to
MOH> do something at the property getter?

You can do it in getter method and by special version of bean:write
tag - with parameters to define formatting type and locale. I can send
you one, if you interested.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: onBlur problem

[Oleg V Alexeev]

Hello Cameron,

Sunday, April 08, 2001, 7:10:25 PM, you wrote:

CI> I am using
CI>  size="16"
CI> onBlur="this.value=formatCurrency(this.value);"/>

Your error lives in word 'onBlur' - it must be lowcase - as defined in
tld.

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re: Internationalised 'alt' text

[Oleg V Alexeev]

Hello Howard,

I have fixed version of this tag with support of i18n. I can send it
to you.

Thursday, February 15, 2001, 9:20:32 PM, you wrote:

HM> Can anybody suggest how I can add internationalised alt text to the
HM>  tag?

HM> If it were legal I would like to do something like the following;

HM> 

HM> but you can't nest tags like this.

HM> If not does anybody think it would be useful to add an optional 'id'
HM> attribute to the  tag which, if set, causes the translated
HM> message to be stored in a page context bean with the given name rather than
HM> being written out? This would allow me to write something like;

HM> 
HM> 

HM> It would also allow translated strings to be cached in the page if they are
HM> going to be used repeatedly (inside a  tag, for example).
HM> This may improve performance considerably.

HM> Any comments?

HM> ---
HM> Howard Moore
HM> Senior Software Engineer
HM> Datapulse CTI
HM> Tel : +44 (0)1491 418000
HM> Fax : +44 (0)1491 411459
HM> E-mail: [EMAIL PROTECTED]



-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]

Re[2]: As promised (Struts Presentation)

[Oleg V Alexeev]

Hello Maya,

Wednesday, February 14, 2001, 3:12:04 PM, you wrote:

MM> Oleg,
MM> Thank you very much for very detail, helpful answer.
MM> The best wishes and good luck.
MM> Maya

Always welcome. 8)

>>   You can store image file names in properties in use it in  tags
>>   - 
>>   
>>

Recently I fix  tag and post it to the struts-dev. If Craig
apply it then you can avoid such constructions as -
 
and use  tag -
 

-- 
Best regards,
 Olegmailto:[EMAIL PROTECTED]