Ok, now I understand.
Thanks a lot.
----- Original Message -----
From: "Nicolas De Loof" <[EMAIL PROTECTED]>
To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
Sent: Thursday, March 27, 2003 15:43
Subject: Re: Using JSP struts tag logic:iterate
> Simply they're is no Cast at all !
> Tags use commons-beanUtils. This package uses javaBean standard to get
properties from objects. In fact they use the
> java.beans.PropertyDescriptor class to get property getter and setter,
without having to know the class used.
>
> Nico.
>
>
>
> > Hi Nicolas,
> > After some reading, I wrote the following code that works pretty well...
> >
> > <logic:iterate name="objA" property="hTable" id="objB" >
> > Next element is <bean:write name="objB" property="value.prop" />
> > [<bean:write name="objB" property="key" />]
> > </logic:iterate>
> >
> > I don't fully understand how the cast from Object to ObjB is performed
but
> > it works....
> > Thanks for your help.
> >
> >
> > ----- Original Message -----
> > From: "Nicolas De Loof" <[EMAIL PROTECTED]>
> > To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> > Sent: Thursday, March 27, 2003 12:24
> > Subject: Re: Using JSP struts tag logic:iterate
> >
> >
> > > YOu can read this on struts-logic doc :
> > >
> > > Normally, each object exposed by the iterate tag is an element of the
> > underlying collection you are iterating over.
> > > However, if you iterate over a Map, the exposed object is of type
> > Map.Entry that has two properties:
> > >
> > > key - The key under which this item is stored in the underlying Map.
> > > value - The value that corresponds to this key.
> > >
> > > So, you should use :
> > >
> > > logic:iterate name="objA" property="hTable" id="objB" indexId="ind"
> > type="ObjB" >
> > > Next element is <bean:write name="objB" property="value.prop" />
> > > [<bean:write name="value.ind"/>]
> > > </logic:iterate>
> > >
> > > Nico.
> > >
> > > > Thanks for your help Nico,
> > > > As you recommend I've checked into my ObjB class and the property
"prop"
> > > > looks well formed :
> > > >
> > > > - "prop" is of type String
> > > > - there is only one getter (getProp() ) and one setter
(setProp(String
> > p) )
> > > > - getProp() is public
> > > >
> > > > As I mentionned in my first append, I used two ways to code the
> > > > logic:iterate tag.
> > > > I can understand the first error message as there is no mention
anywhere
> > of
> > > > the type of "objB" (as "objB" is stored as an Object type in the
> > > > Hashtable). But I don't understand the second error message
("invalid
> > Cast")
> > > > as I specify the type for "objB".
> > > >
> > > >
> > > > ----- Original Message -----
> > > > From: "Nicolas De Loof" <[EMAIL PROTECTED]>
> > > > To: "Struts Users Mailing List" <[EMAIL PROTECTED]>
> > > > Sent: Thursday, March 27, 2003 11:27
> > > > Subject: Re: Using JSP struts tag logic:iterate
> > > >
> > > >
> > > > > You don't need <jsp:useBean> as struts tags look into scope
themself.
> > > > (usebean create a scriptlet variable from a bean)
> > > > >
> > > > > Your code looks fine. Look at objB code, getter should not be well
> > formed.
> > > > > - be carreful about uppercase beginig properties
> > > > > - be carreful not to have mulitple setters with different data
types
> > > > (IFAIK it will break javaBean PropertyInfo)
> > > > > - be carreful getter is public
> > > > >
> > > > > Nico.
> > > > >
> > > > >
> > > > >
> > > > > Hi,
> > > > > I'm a bit confusing using the jsp struts tag logic:iterate.
> > > > > Here is my problem.
> > > > >
> > > > > In my business logic I've created an object (let's call it "objA")
> > that
> > > > contains a Hashtable which itself contain a list
> > > > > of objects ("objB") . The Hastable object ("hTable") can be
accessed
> > > > through getter and setter from "objA".
> > > > > I want now to display as a table the property "prop" of all "objB"
> > objects
> > > > contained in the Hashtable "hTable" ("prop"
> > > > > is a String and can be accessed through getter and setter from
> > "objB".
> > > > >
> > > > > Before launching the jsp I've put objA in the HTTP request.
> > > > >
> > > > > Then I've coded the following in the Jsp :
> > > > >
> > > > > <jsp:useBean id="objA" class="ObjA" scope="request"></jsp:useBean>
> > > > >
> > > > > <logic:iterate name="objA" property="hTable" id="objB"
indexId="ind" >
> > > > > Next element is <bean:write name="objB" property="prop" />
> > > > [<bean:write name="ind"/>]
> > > > > </logic:iterate>
> > > > >
> > > > > Coding this, I get the following error :
> > > > >
> > > > > [Servlet Error]-[No getter method for property prop of bean objB]:
> > > > >
> > > > >
> > > > > I tried then to code :
> > > > >
> > > > > <jsp:useBean id="objA" class="ObjA" scope="request"></jsp:useBean>
> > > > >
> > > > > <logic:iterate name="objA" property="hTable" id="objB"
indexId="ind"
> > > > type="ObjB" >
> > > > > Next element is <bean:write name="objB" property="prop" />
> > > > [<bean:write name="ind"/>]
> > > > > </logic:iterate>
> > > > >
> > > > > In this case I get the following error :
> > > > >
> > > > > [Servlet Error]-[JSP 1.2 Processor]: java.lang.ClassCastException:
> > > > java.util.Hashtable$Entry
> > > > >
> > > > > Can anyone tell me what I am doing wrong please ?
> > > > >
> > > > > Thanks for your help
> > > > >
> > > > > Jean-Michel Auguste
> > > > >
> > > > >
> > > > >
> > > >
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