Hmmm... The information for your Ant task may be old... I don't remember that we highlighted the need for commons-lang-2.4 like that... Here's a blog post [1] that helps explain the various mechanisms for dynamic and static enhancement processing. Maybe that will help with diagnosing the problem.
A similar problem was also found while using Maven 2.0.8 [2], but the call stack isn't exactly the same as yours. But, maybe the resolution would still help. Good luck, Kevin [1] http://webspherepersistence.blogspot.com/2009/02/openjpa-enhancement.html [2] https://issues.apache.org/jira/browse/OPENJPA-685 On Sat, Sep 5, 2009 at 7:02 PM, jack.terranova <jack.terran...@gmail.com>wrote: > > Sounds like this poster had this issue too ... > > > http://n2.nabble.com/Please-help-me-enhancing-my-classes-td209164.html#a209166 > > http://n2.nabble.com/Please-help-me-enhancing-my-classes-td209164.html#a209166 > > ... but their issue just went away. > > I am trying to enhance at build time using Ant... > > <target name="enhance"> > <!-- define the openjpac task; this can be done at the top of the > --> > <!-- build.xml file, so it will be available for all targets --> > <taskdef name="openjpac" > classname="org.apache.openjpa.ant.PCEnhancerTask"> > <classpath> > > <fileset dir="src/META-INF" > > </fileset> > <pathelement > path="/home/jack/programs/commons-lang-2.4/commons-lang-2.4.jar" /> > <pathelement > path="/home/jack/programs/apache-openjpa-1.2.1/openjpa-1.2.1.jar" /> > </classpath> > </taskdef> > > <!-- invoke enhancer on all .java files below the model directory > --> > <openjpac> > <fileset dir="build/classes"> > <include name="**/*.class"/> > </fileset> > </openjpac> > </target> > > > commons-lang-2.4.jar seems to be the culprit. Originally I was getting a > ClassNotFound for a commons/lang class. So I added the jar into the > classpath and get this exception ... > > > [openjpac] java.util.zip.ZipException: error in opening zip file > [openjpac] at java.util.zip.ZipFile.open(Native Method) > [openjpac] at java.util.zip.ZipFile.<init>(Unknown Source) > [openjpac] at java.util.zip.ZipFile.<init>(Unknown Source) > [openjpac] at > > org.apache.tools.ant.AntClassLoader.getResourceURL(AntClassLoader.java:1028) > [openjpac] at > > org.apache.tools.ant.AntClassLoader$ResourceEnumeration.findNextResource(AntClassLoader.java:147) > [openjpac] at > > org.apache.tools.ant.AntClassLoader$ResourceEnumeration.<init>(AntClassLoader.java:109) > [openjpac] at > org.apache.tools.ant.AntClassLoader.findResources(AntClassLoader.java:975) > [openjpac] at java.lang.ClassLoader.getResources(Unknown Source) > > > ...I've struggles with all sorts of workarounds including downloading > different versions of common-lang thinking maybe the jar is corrupt. But I > think this is an openjpa issue. > > Enhancing at runtime works great with the agent - so that is my workaround > for now. > > Thanks in advance. > -- > View this message in context: > http://n2.nabble.com/Cannot-enhance-at-build-time-strange-ZipException-tp3590538p3590538.html > Sent from the OpenJPA Users mailing list archive at Nabble.com. >
