26 Jan
2012
26 Jan
'12
5:24 p.m.
Hi Developers,
I implement an ant task that allows the import of xar files into a xwiki
database. This Tasks uses a class that is derived from AbstractPackager.
Whenever an object of this class calls
AbstractPackager.createXWikiContext I get an exception with the
following root cause:
Caused by: java.lang.NullPointerException
at
org.xwiki.context.internal.DefaultExecutionContextManager.initialize(DefaultExecutionContextManager.java:138)
at
com.xpn.xwiki.tool.backup.AbstractPackager.createXWikiContext(AbstractPackager.java:75)
at
...
It seems that this AbstractPackager.createXWikiContext method works only
on some circumstances. I assume that the injection mechanism is not
working in my case.
In a seconds test I implemented a main method in the AntTask, and
provided the parameter via command line. And it worked but only under
the condition that the required classpath is defined in the manifest of
the jar and the program is started via
java -jar xarImportAntTask.jar
When I setup the classpath externally and start it with
java -cp ... de.hierlmeier.xwiki.ant.XarImportTask
I get the same NullPointerException as within ant.
Can someone give me a hint to solve the problem?
If anyone is interrested I can contribute the ant task to the open
source community (once it is working). Here is a sample ant configuration:
<taskdef name="importXar"
classname="de.hierlmeier.xwiki.ant.XarImportTask">
<classpath>
<pathelement location="${instdir}/xwiki/WEB-INF"/>
<pathelement location="${instdir}/xwiki/WEB-INF/classes"/>
<fileset dir="${instdir}/xwiki/WEB-INF/lib">
<include name="*.jar"/>
</fileset>
</classpath>
</taskdef>
<importXar hibernateConfig="${instdir}/xwiki/WEB-INF/hibernate.cfg.xml"
xwikidb="xwiki">
<xarFiles dir="${basedir}/xars">
<include name="*.xar"/>
</xarFiles>
</importXar>
Thank you in advance
Richard