Hi Scott,
Yes, bug 1006 points out inconsistency with introspection as compared
with mapping files. I've already started a patch for bug 1006 and plan
on having it finished for inclusion in the next Castor release
(currently scheduled for Oct 7th).
Thanks,
--keith
Scott Sims wrote:
>
> Amar,
>
> Do you have a simple example of this working? I know Castor "supports"
> lists and arrays in virtually the same way. However it may not support them
> in the way that David expects. For example, given the following in Fig 1:
>
> import java.util.*;
>
> public class TestObject
> {
> public TestObject() {}
> public List getObjects() { return list; }
> public void setObjects(List list) { this.list = list; }
> private List list = new ArrayList();
> }
>
> public class TestObject1
> {
> public TestObject1() {}
>
> // Using int
> public TestObject1(int i) { this.i = i; }
>
> private int i;
> private int j;
>
> public int getI() { return i; }
> public void setI(int i) { this.i = i; }
>
> public int getJ() { return j; }
> public void setJ(int j) { this.j = j; }
> }
> (Fig 1)
>
> with a mapping of Fig 2:
>
> <?xml version="1.0"?>
> <!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Object Mapping DTD Version
> 1.0//EN" "http://castor.exolab.org/mapping.dtd";>
> <mapping>
> <class name="TestObject">
> <map-to xml="testObject"/>
> <field name="objects"
> collection="arraylist"
> type="TestObject1">
> <bind-xml name="objects"/>
> </field>
> </class>
> <class name="TestObject1">
> <map-to xml="testObject1"/>
> <field name="i" type="integer">
> <bind-xml node="element"/>
> </field>
> <field name="j" type="integer">
> <bind-xml node="element"/>
> </field>
> </class>
> </mapping>
> (Fig 2)
>
> you may expect to get the following Fig 3:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <testObject>
> <objects>
> <testObject1>
> <i>1</i>
> <j>0</j>
> </testObject1>
> <testObject1>
> <i>2</i>
> <j>0</j>
> </testObject1>
> </objects>
> </testObject>
> (Fig 3)
>
> Logically, I think this is what many people would expect. Individual list
> elements are fully represented within the <objects> tag. However, what
> Castor outputs is Fig 4:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <testObject>
> <objects>
> <i>1</i>
> <j>0</j>
> </objects>
> <objects>
> <i>2</i>
> <j>0</j>
> </objects>
> </testObject>
> (Fig 4)
>
> Where the name of the class within the list is lost and the wrapping list
> name is used in its place. Now, if you don't use a mapping file, you get
> something closer to what you may expect (Fig 5):
>
> <?xml version="1.0" encoding="UTF-8"?>
> <test-object>
> <objects xsi:type="java:java.util.ArrayList"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
> <test-object1 j="0" i="1" xsi:type="java:TestObject1"/>
> <test-object1 j="0" i="2" xsi:type="java:TestObject1"/>
> </objects>
> </test-object>
> (Fig 5)
>
> Again, the objects within the list are wrapped by the name of the list. If
> you use a map file you will get the same result whether you choose a List or
> an array as your container. If you don't use a map file the results are
> slightly different Fig 6:
>
> <?xml version="1.0" encoding="UTF-8"?>
> <test-object>
> <objects j="0" i="1"/>
> <objects j="0" i="2"/>
> </test-object>
> (Fig 6)
>
> Notice the array version loses the name of the wrapped class also.
>
> As far as I know (thanks to Tung Mansfield for the bug # and much of the
> above example) this is a known bug (1006) for Casto XML. If you know of a
> way to get the result shown in Fig 3 above please let me know. The bug is
> still open and I struggling to find a work around.
>
> Scott
>
> -----Original Message-----
> From: Amar Mehta [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, September 24, 2002 12:03 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [castor-dev] Does Castor-XML work with lists?
>
> I know for a fact that Castor supports arrays. In the mapping file you
> specify for the field element collection="array". The type for that field
> would be whatever type the list's elements are. I like returning arrays
> instead of lists just because there is no mistaking the type.
>
> >From: David Tayouri <[EMAIL PROTECTED]>
> >Reply-To: [EMAIL PROTECTED]
> >To: [EMAIL PROTECTED]
> >Subject: [castor-dev] Does Castor-XML work with lists?
> >Date: Tue, 24 Sep 2002 18:20:35 +0200
> >
> >I tried to marshal to XML a Java object that includes an ArrayList,
> >but only an empty XML was created.
> >Is Castor-XML supposed to support lists?
> >
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