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From "Mathew, Manoj" <Mathew.Ma...@principal.com>
Subject RE: ArrayList and DynaActionForm
Date Wed, 28 Apr 2004 15:55:51 GMT


thanks a lot..I got it.
Actually the alignment was not good in my screen and that caused all confusion.
Thsi link really helped out..
thanks Hubert and also Geetha.


-----Original Message-----
From: Hubert Rabago [mailto:jakartauser@yahoo.com]
Sent: Wednesday, April 28, 2004 10:39 AM
To: Struts Users Mailing List
Subject: RE: ArrayList and DynaActionForm


The explanation is in
http://jakarta.apache.org/commons/collections/api/org/apache/commons/collections/ListUtils.html#lazyList(java.util.List,
org.apache.commons.collections.Factory)

If you have specific questions, post them here and if not me, someone else
might answer them.

Hubert

--- "Mathew, Manoj" <Mathew.Manoj@principal.com> wrote:
> can you explain little more please. I am a dumb.
> 
>   I didn't get the second parameter
> 	  new Factory() {
>                                        public Object create() {
>                                            return new CreditCost();
>                                        }
>                                     }
> 
> Thank-you,
> Manoj Mathew
> 
> 
> 
> -----Original Message-----
> From: Hubert Rabago [mailto:jakartauser@yahoo.com]
> Sent: Wednesday, April 28, 2004 10:17 AM
> To: Struts Users Mailing List
> Subject: RE: ArrayList and DynaActionForm--need help very badly
> 
> 
> Create a DynaActionForm subclass, then do the reset there.
> Try something like this:
> 
> import org.apache.commons.collections.Factory;
> public class MathewDynaActionForm extends DynaActionForm {
>     public void reset(ActionMapping mapping, HttpServletRequest request) {
>         List creditCosts =
>                 ListUtils.lazyList(new ArrayList(),
>                                    new Factory() {
>                                        public Object create() {
>                                            return new CreditCost();
>                                        }
>                                     });
>         set("creditCosts", creditCosts);
>     }
> }
> 
> <form-bean name="creditCostsForm" type="MathewDynaActionForm">
>          <form-property name="creditCosts" type="java.util.ArrayList" />
>          ...
> </form-bean>
> 
> 
> Hubert
> 
> --- "Mathew, Manoj" <Mathew.Manoj@principal.com> wrote:
> > Guys
> > 
> >   Let me explain little more.. But man i am running out of time.
> > I still didn't get how to do this. since i am uwing Dynaactionform, I am
> > nto asure where to write the reset().
> > 
> > I a having the bean in the request scope as well as my list has variable
> > size.
> > my struts config entry is this.
> > 
> > <form-bean name="creditCostsForm" type="...">
> >         <form-property name="creditCosts" type="java.util.ArrayList" />
> > 
> > the issue i am facing is,
> > 
> > from the jsp when you submit the form, the struts is calling the
> > setmyList(key value).
> > But it is using the key not in order, for example it might call
> setmyList(2
> > value1)  before calling setmyList(1 value1)..
> > sonce the implementation use myList.add(), IT blows off and throwing
> > ArrayIndexout ofBOnd exception.
> > 
> > I have implemented the same in my Action for by coding the set in this
> way.
> > 	public void setEmpVTLMaxPercOfSalaryValues(int key, Object value) {
> > 		int size = empVTLMaxPercOfSalaryValues.size();
> > 		if (size <= key) {
> > 			for (int i = size; i < key + 1; i++) {
> > 				empVTLMaxPercOfSalaryValues.add(value);
> > 			}
> > 		}
> > 		empVTLMaxPercOfSalaryValues.set(key, value);
> > 	}
> > 
> > but since in Dynaactionform, I don't have my setters and getters , i have
> > this issue. Please help me out..Time is running out.
> > 
> > Thank-you,
> > Manoj Mathew
> > 
> > -----Original Message-----
> > From: Richard Yee [mailto:ryee@cruzio.com]
> > Sent: Tuesday, April 27, 2004 8:01 PM
> > To: Struts Users Mailing List
> > Subject: RE: ArrayList and DynaActionForm
> > 
> > 
> > Mathew,
> > Take what I wrote and combine it with what Sandeep wrote and you have a 
> > solution that uses request scope but does not require the use of the 
> > LazyList. In your FormBean reset method, if you have a list that has a 
> > variable size, then use a form bean attribute to store the # of elements 
> > you need to put into the ArrayList and use that value in the reset method
> 
> > to populate the list.
> > 
> > Regards,
> > 
> > Richard
> > 
> > At 12:32 PM 4/27/2004, you wrote:
> > >I a m using request scope.
> > >So i need to go for lazylist implementation.
> > >
> > >Would you go little more in detail?
> > >
> > >
> > >
> > >Thank-you,
> > >Manoj Mathew
> > >-----Original Message-----
> > >From: Takhar, Sandeep [mailto:Sandeep.Takhar@CIBC.ca]
> > >Sent: Tuesday, April 27, 2004 2:23 PM
> > >To: Struts Users Mailing List
> > >Subject: RE: ArrayList and DynaActionForm
> > >
> > >
> > >form.set("list", new ArrayList());
> > >
> > >should work
> > >
> > >Problem is that unless you are using a lazy list implementation of some 
> > >sort or session scope, the list won't be initialized for your populate.
> > >
> > >sandeep
> > >
> > >-----Original Message-----
> > >From: Mathew, Manoj [mailto:Mathew.Manoj@principal.com]
> > >Sent: Tuesday, April 27, 2004 3:16 PM
> > >To: Struts Users Mailing List
> > >Subject: RE: ArrayList and DynaActionForm
> > >
> > >
> > >Richard
> > >
> > >   Actually i have implemented Action forms which have List as element. 
> > > It's fine.
> > >But my issue is when i put List as an element of DynaActionForm? In this
> 
> > >case i don't have setters and getters and i cannot prepopulate it.
> > >
> > >Thank-you,
> > >Manoj Mathew
> > >
> > >-----Original Message-----
> > >From: Richard Yee [mailto:ryee86@yahoo.com]
> > >Sent: Tuesday, April 27, 2004 1:13 PM
> > >To: Struts Users Mailing List
> > >Subject: RE: ArrayList and DynaActionForm
> > >
> > >
> > >Mathew,
> > >See:
> > >http://marc.theaimsgroup.com/?l=struts-user&m=108261575210769&w=2
> > >
> > >The thread subject is:  Re: How to pre-populate values
> > >to <nested:radio> buttons from
> > >
> > >The date was 4/22/04.
> > >
> > >Regards,
> > >
> > >Richard
> > >
> > >--- "Mathew, Manoj" <Mathew.Manoj@principal.com>
> > >wrote:
> > > >
> > > >
> > > > Narayan
> > > >
> > > > you got the answer for this? Can you please share
> > > > that with me?
> > > > I searched the Archive, but couldn't find Richard's
> > > > earlier solution.
> > > > I am using
> > > > <form-bean name="creditCostsForm" type="...">
> > > >         <form-property name="creditCosts"
> > > > type="java.util.ArrayList" />
> > > >
> > > > but gettingArrayIndexoutofBond while setting...
> > > >
> > > > matt
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: Richard Yee [mailto:ryee86@yahoo.com]
> > > > Sent: Monday, April 26, 2004 4:45 PM
> > > > To: Struts Users Mailing List
> > > > Subject: Re: ArrayList and DynaActionForm
> > > >
> > > >
> > > > If you have a fixed # of elements or if you put the
> > > > count of elements in your form bean, you can put
> 
=== message truncated ===



	
		
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