[castor-dev] Ability to keep one instance when using references

[Deliens Christophe]

Hello,

I have the following mapping file:

 
 <!DOCTYPE databases PUBLIC "-//EXOLAB/Castor Mapping DTD Version 1.0//EN"
"http://castor.exolab.org/mapping.dtd";>

 <mapping>
 
   <class name="be.dad.test.Logging" auto-complete="true">  
        <field name="outputs"
        type="be.dad.test.Output"
        create-method="createOutput"
        collection="collection">
        </field>
        <field name="regions"
        type="be.dad.test.Region"
        create-method="createRegion"
        collection="collection">
        </field>
   </class>
 
   <class name="be.dad.test.Region" auto-complete="true">
        <field name="outputs"
        type="be.dad.test.Output"
        collection="collection">
        <bind-xml node="attribute" reference="true"/>
      </field>
   </class>
 
   <class name="be.dad.test.Output" auto-complete="true" identity="name">
        <field name="name">
        <bind-xml node="element"/>
        </field>
   </class>
 
 </mapping>
 
 

It produces the following XML:
 
 <?xml version="1.0" encoding="UTF-8"?>
 <logging>
     <outputs>
         <name>name1</name>
         <type>type1</type>
     </outputs>
     <outputs>
         <name>name2</name>
         <type>type2</type>
     </outputs>
     <outputs>
         <name>name3</name>
         <type>type3</type>
     </outputs>
     <regions outputs="name1">
         <name>reg1</name>
     </regions>
     <regions outputs="name2 name3">
         <name>reg2</name>
     </regions>
 </logging>
 
 
Is it possible with Castor to re-use the same instance for referenced
objects?
I mean: is it possible, when unmarshalling, to put in the Region object's
Collection the same instance 1st created in the Logging object's Collection?
Because, with the actual mapping file & stuff, it re-creates another
instance... I hoped the "reference" option would re-use the same instance,
and thus making "reference"...

Thx for your help!
Chris

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