Re: the difference between struts with JSTL tags and struts-el tags
Kay, Thanks for your reply. >Do you have a valid "taglib" directive in your JSP? Yes. > Do you have both the struts.jar and strutsel.jar in your WEB-INF/lib, Yes. both struts.jar and struts-el.jar >and there are no other instances of those jars in your classpath? my classpath: .;c:\j2sdk1.4.2_01\bin;c:\j2sdk1.4.2_01\lib;d:\batik\batik-1.5\lib;d:\batik\ xml-batik;d:\junit3.8.1\junit.jar >What container are you using? Jrun 4.0 updater 3 After I switched back to use struts with JSTL tags, the problem went away. I am thinking if there is no difference between struts with jstl tag and struts-el tags, I do not have to switch. What is the advantage of using struts-el tags over jstl tags? Thank you. Kathy - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
the difference between struts with JSTL tags and struts-el tags
All, I am confused after using struts-el tags. I was previously using standard struts tags with jstl tags as needed. After I switched to use struts-el, some of tags are no more working. for example, readonly="true" attribute in html:text tag is not working in struts-el tags. It is saying that Error: No match was found for method "setReadonly(java.lang.String)". It seems "true" becomes a string instead of boolean type in html:text tag (el). Now my question is "What are the special features in el-tags which improve struts standard tags and jstl tag?" I tried to find the answer from online docs. But there are not too much info provided on the Internet. Does anybody have the answer to my question? Thanks, Kathy - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: Page pre-processing - reply
Manually calling execute() will work if execute() only does the initializing
collections or data used on a form. Good idea.
Kathy
- Original Message -
From: "None None" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Sunday, May 30, 2004 10:13 AM
Subject: Re: Page pre-processing - reply
> Is your preparation being done in an Action? If so, why not just
> instantiate it yourself and call execute() manually?
>
> I do something I think is similar to your question in an application I
just
> converted to Struts...
>
> I have a management-type screen that has a list of users that can be
> maintained. It also has detail entry fields for maintaining a selected
user
> or creating a new user. The initial Action that is accessed when the page
> is first shown populates various drop-downs. Another Action populates the
> list of users (based on some search criteria). Any time a maintenence
> function is performed, like delete user, update user, etc., I instantiate
> the first two Actions, call execute() on them, passing them the ActionForm
> for the screen from the Action that was actually called. They do what
they
> need to do, populate the ActionForm, and return. So, it's like:
>
> UpdateUserAction {
> PopulateDropDownsAction pdda = new PopulateDropDownsAction();
> pdda.execute(mapping, form, request, response);
> ListUsersAction pua = new ListUsersAction();
> lua.execute(mapping, form, request, response);
> return forward...
> }
>
> So every Action that is performed on this screen will always "pre-process"
> my form and get any default data populated that should be populated.
>
> It's of course possible I completely misunderstood your question in the
> first place, but if not, this might do the trick for you. I think people
> sometimes forget that you can manually call Actions from other Actions,
> which is the key point.
>
> >From: <[EMAIL PROTECTED]>
> >Reply-To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> >To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> >Subject: Re: Page pre-processing - reply
> >Date: Sat, 29 May 2004 23:42:22 -0400
> >
> >Eric,
> >The way I did was to add the collection to request in Action bean when
the
> >validation of the form failed. The collection was re-initialized as
needed.
> >
> >I have not found any other way in struts yet.
> >
> >Kathy
> >
> >- Original Message -
> >From: "Eric Fesler" <[EMAIL PROTECTED]>
> >To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> >Sent: Saturday, May 29, 2004 11:58 AM
> >Subject: Page pre-processing
> >
> >
> > > Hi,
> > >
> > > I'm currently working on an application with several pages having
> > > multiple combo-boxes.
> > >
> > > The content of the combo-boxes is closely related to other components
of
> > > the model. Therefore, I use a 'prepare' action to setup the model and
> > > put the combo-box collections in the request scope.
> > >
> > > Unfortunately, this way of working is not compatible with the Struts
> > > validation process. Indeed, when the validation of the form failed,
the
> > > request is forwarded back to the input page and the collections are
not
> > > initialized.
> > >
> > > A workaround would be to put the collections in the session scope
(what
> > > I finally did) but at the end the session becomes full of garbage
> > > information. Another solution is to build the collection within the
JSP
> > > page (maybe with custom tags) but this is against the separation of
the
> > > view and the model.
> > >
> > > I was wondering if anybody had already thought about an additional
> > > parameter linked to a struts-forward allowing page pre-processing.
This
> > > parameter could point to a new kind of model action that will complete
> > > the model with information needed by the view any time the forward is
> > > activated.
> > >
> > > Or... I'm missing something ...
> > >
> > >
> > > How do you handle such a case?
> > >
> > > Thanks,
> > >
> > > --Eric
> > >
> > >
> > >
> > > -
> > > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > > For additional commands, e-mail: [EMAIL PROTECTED]
> > >
> >
> >
> >-
> >To unsubscribe, e-mail: [EMAIL PROTECTED]
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> >
>
> _
> FREE pop-up blocking with the new MSN Toolbar - get it now!
> http://toolbar.msn.click-url.com/go/onm00200415ave/direct/01/
>
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Re: Page pre-processing - reply
Eric, The way I did was to add the collection to request in Action bean when the validation of the form failed. The collection was re-initialized as needed. I have not found any other way in struts yet. Kathy - Original Message - From: "Eric Fesler" <[EMAIL PROTECTED]> To: "Struts Users Mailing List" <[EMAIL PROTECTED]> Sent: Saturday, May 29, 2004 11:58 AM Subject: Page pre-processing > Hi, > > I'm currently working on an application with several pages having > multiple combo-boxes. > > The content of the combo-boxes is closely related to other components of > the model. Therefore, I use a 'prepare' action to setup the model and > put the combo-box collections in the request scope. > > Unfortunately, this way of working is not compatible with the Struts > validation process. Indeed, when the validation of the form failed, the > request is forwarded back to the input page and the collections are not > initialized. > > A workaround would be to put the collections in the session scope (what > I finally did) but at the end the session becomes full of garbage > information. Another solution is to build the collection within the JSP > page (maybe with custom tags) but this is against the separation of the > view and the model. > > I was wondering if anybody had already thought about an additional > parameter linked to a struts-forward allowing page pre-processing. This > parameter could point to a new kind of model action that will complete > the model with information needed by the view any time the forward is > activated. > > Or... I'm missing something ... > > > How do you handle such a case? > > Thanks, > > --Eric > > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Re: presentation tag- Thank you.
Mark and Joe,
Thank you very much for your info. I will try it out.
:)
Kathy
.
- Original Message -
From: "Joe Germuska" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Thursday, May 27, 2004 5:15 PM
Subject: Re: presentation tag
> At 4:54 PM -0400 5/27/04, Kathy Zhou wrote:
> >How could I show 3 elements of a ArrayList per line on the page with
> > tag.
> >
> >My code is:
> >HashMap ilist =..;
> >Its value is a ArrayList of javabeans having getter/setter methods.
> >
> >
> > c:out value="${vissue.key}"/>
> >
> > <%--- need 3 var values
> >per line --%>
> >
> >
> >
> >it shows me one pcode value per line on html page. But I want to show
three
> >pcodes per line. Since there is no index number I could use (I may be
> >wrong) on the second tag, how could I make it? Any
suggestions?
>
> Use the "varStatus" attribute of c:forEach to specify the name under
> which the tag will define a "LoopTagStatus" bean.
>
> http://java.sun.com/products/jsp/jstl/1.1/docs/tlddocs/c/forEach.html
>
http://java.sun.com/webservices/docs/1.3/api/javax/servlet/jsp/jstl/core/Loo
pTagStatus.html
>
> The LoopTagStatus bean has an index property.
>
> Joe
>
>
> --
> Joe Germuska
> [EMAIL PROTECTED]
> http://blog.germuska.com
>"Imagine if every Thursday your shoes exploded if you tied them
> the usual way. This happens to us all the time with computers, and
> nobody thinks of complaining."
> -- Jef Raskin
>
> -
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>
>
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set default values for form fields - follow-up
I think the answer I got from online resources is I need to use either DynaValidatorForm or my own ActionForm, but not both. It seems that I could not overwrite reset(...) method in DynaValidatorForm by extending it. Correct me if I am wrong. Thanks, Kathy - Original Message - From: <[EMAIL PROTECTED]> To: "Struts Users Mailing List" <[EMAIL PROTECTED]> Sent: Saturday, May 15, 2004 5:24 PM Subject: Re: How to set an ActionForm to null > I am using DynaValidatorForm but I need to set the default values for some > text fields in a form. Therefore, I write a ActionForm which extends > DynaValidatorForm and use reset method to set default values. The values > were not shown after the form was loaded. > I must miss something here. Could anyone provide some hints? Thanks a lot. > > Kathy > > > - > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
Sorry I was using a wrong subject in my previous msg, which is not related to the subject "set ActionForm to null".
- Original Message -
From: "Niall Pemberton" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>; "pls"
<[EMAIL PROTECTED]>
Sent: Saturday, May 15, 2004 4:43 PM
Subject: Re: How to set an ActionForm to null
> This is expected behaviour, when you forward to your second Action Struts
> will go through all its normal steps, finding/creating the ActionForm,
> populating the form from the request, validating and then calling the
> Action's execute method. So setting it to null isn't going to work, you
need
> to rethink how you design this.
>
> Niall
>
> - Original Message -
> From: "pls" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Friday, May 14, 2004 5:33 AM
> Subject: How to set an ActionForm to null
>
>
> > hi there,
> >
> > i am trying to set an actionform to null after inserting it's properties
> > into a DB.
> > then, control is forwarded to a different action and the info is read
from
> > the DB back into the actionform for display by a JSP.
> >
> > the only part that is giving me trouble is with explicitly setting my
> > actionform "MBForm" to null. After several form submissions and a DB
> > update, the first Action attempts to clear the values in MBForm:
> >
> > request.getSession().setAttribute("MBForm", null);
> >
> > after this, control is forwarded to the second Action which handles the
> > display. it checks to see if MBForm is null and, if it is, it fills
> MBForm
> > from a DB. in between these two actions, the controller servlet is
> > automatically refilling the MBForm with the values that I just
nullified..
> > the only bean property that stays empty is myHash which represents
several
> > groups of multiboxes. i believe this is a result of the MBForm reset()
> > method which contains the following:
> >
> > myHash.put(multiBoxCategories, new Integer[0]); //resets several
> > groups of multiboxes
> >
> > setting other properties to null in the reset() method is not the
solution
> > as it wipes the value out after every (but somehow it doesn't do the
same
> > thing to the multiboxes?!?)
> >
> > let me know if this enough background for you to help me diagnose the
> > problem.. any discussion of reset() or is welcome.. thanks
> >
> >
> >
> >
> > -
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
> >
>
>
>
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Re: How to set an ActionForm to null
I am using DynaValidatorForm but I need to set the default values for some text fields in a form. Therefore, I write a ActionForm which extends DynaValidatorForm and use reset method to set default values. The values were not shown after the form was loaded. I must miss something here. Could anyone provide some hints? Thanks a lot. Kathy - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
logic tag
I am new to struts. I have a question regarding logic tag.
I was replacing those if else if . end if stuffs with logic tags on jsp pages.
For example:
if num==1 {// condition 1
block 1;
}else if num==2 {// condition 2
block 2;
}
Usually if condition 1 is true, condition 2 does not be evaluated. Now if I use
tag as follows:
(condition 1)
block 1;
(condition 2)
block 2;
It seems that condition 2 is always evaluated no matter what the result of condition 1
is. It would be a performance penalty if this is the case. Am I wrong?
Thanks for help,
Kathy
