It works fine ! I can now choose the persistence unit for enhancing at 
build-time.

Thanks.

On 17 août 2010, at 15:42, Pinaki Poddar wrote:

> 
>> I'm unable to find the information about how to specify the persistence
> unit to use from ant.
>> It might not be possible. 
> 
>       <path id="openjpa.compile.classpath">
>               <pathelement path="${openjpa.jar}" />
>               <pathelement path="${classes.dir}" />
>               <pathelement path="${rsrc.dir}" />
>       </path>
> 
>       <target name="compile.openjpa">
>               <java classname="org.apache.openjpa.enhance.PCEnhancer"
>                     failonerror="true"
>                     fork="true">
>                       <classpath refid="openjpa.compile.classpath" />
>                       <arg value="-properties" />
>                       <arg value="META-INF/persistence.xml#exchange" />
>               </java>
>       </target>
> 
> {rsrc.dir} points to parent of META-INF dir that contains the
> persistence.xml file.
> 
> 
> -----
> Pinaki 
> -- 
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> http://openjpa.208410.n2.nabble.com/Enhance-clarification-needed-tp5415698p5432136.html
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