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From Jean-Baptiste BRIAUD -- Novlog <j-b.bri...@novlog.com>
Subject Re: openjpac works fine in my ant script, but why ?
Date Tue, 15 Sep 2009 06:26:57 GMT
up !
I really want to understand, please, explain me :-)

On Sep 9, 2009, at 10:11 , Jean-Baptiste BRIAUD -- Novlog wrote:

> Hi the list,
>
> As soon as I try to use openjpac with ant to have built-time  
> enhancement, it had worked fine.
> I try after that to have an learning/optimisation phase where I  
> could reduce classpath and dependency to the stric minimum.
>
> Basically, its working but I'd like to understand why :-)
>
> 1. Why was it needed to include my own classes in the classpath of  
> the taskdef ?
> <taskdef name="openjpac"  
> classname="org.apache.openjpa.ant.PCEnhancerTask">
>    <classpath>
>        <fileset dir="../common/lib/openjpa">
>            <include name="**/*.jar"/>
>        </fileset>
>        <fileset dir="../common/lib/jpa">
>            <include name="**/*.jar"/>
>        </fileset>
>        <pathelement location="blablabla/classes"/>  //// why is that  
> line needed ?
>    </classpath>
> </taskdef>
>
> 2. I was not able to make the taskdef outside the task who used it.
> <target name="ehance">
> 	<taskdef must be here, why can't I put it outside the target ?
> 	<openjpac ...
>
> 3. The only way I was able to make it work was use the same  
> classpath for both taskdef and openjpac, why ?
> I'm not discussing about ant and I know it could be less verbose by  
> using <classpath refid=
> I want to understand why apparently redondant information have to be  
> provide.
>
> <taskdef name="openjpac"  
> classname="org.apache.openjpa.ant.PCEnhancerTask">
>    <classpath>
>        <fileset dir="../common/lib/openjpa">
>            <include name="**/*.jar"/>
>        </fileset>
>        <fileset dir="../common/lib/jpa">
>            <include name="**/*.jar"/>
>        </fileset>
>        <pathelement location="blablabla/classes"/>
>    </classpath>
> </taskdef>
>
> <openjpac>
>    <config propertiesFile="../common/src/persistence.xml"/>
>    <classpath> /// Why do I have to add openjpa here ? I already  
> said that in the taskdef
>        <fileset dir="../common/lib/openjpa">
>            <include name="**/*.jar"/>
>        </fileset>
>        <fileset dir="../common/lib/jpa">
>            <include name="**/*.jar"/>
>        </fileset>
>        <pathelement location="blablabla/classes"/>
>    </classpath>
> </openjpac>
>


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