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From Michael Dick <michael.d.d...@gmail.com>
Subject Re: Enhancer questions/problems
Date Thu, 05 Feb 2009 23:09:45 GMT
My guess, and it's only that, is that we're hitting an issue with ant. I
think it is or is related to this bug :
https://issues.apache.org/bugzilla/show_bug.cgi?id=38260.

On Linux I've seen similar intermittent problems (mainly with trunk) that
show the "too many open files" symptom described in the bugzilla report.

I have not seen the errors if I manually update pom.xml to use ant 1.7.0 but
that might just be luck.

Regarding the enhancer there's information in the OpenJPA manual regarding
what enhancement does [1]. Regarding the enhancement process during the
build I'm not sure why the build doesn't fail after that exception. There
might be a bug in the way we're using the antrun maven plugin or a bug in
enhancer.xml.. I

[1]
http://openjpa.apache.org/builds/latest/docs/manual/ref_guide_pc_enhance.html

-mike

On Thu, Feb 5, 2009 at 4:40 PM, Tim McConnell <tim.mcconne@gmail.com> wrote:

> Hi, I notice that occasionally when I build various versions of OpenJPA
> (e.g., trunk, branches\1.2.x, tags\1.2.0) the enhance.all.entities ant step
> will getting many numerous ZipException's (see below). So I was just
> wondering if anyone knew what might be causing this ?? And why the build
> doesn't stop when it does happen ?? I guess I don't yet know enough about
> the "enhancer" to fully appreciate/understand what it does, but I would have
> expected the build to fail and stop immediately..... Thanks....
>
>
>
> [INFO] [jar:jar]
> [INFO] Building jar:
>
> C:\SVN\OPENJPA\tags\1.2.0\openjpa-persistence\target\openjpa-persistence-1.2.0.jar
> [INFO] [install:install]
> [INFO] Installing
>
> C:\SVN\OPENJPA\tags\1.2.0\openjpa-persistence\target\openjpa-persistence-1.2.0.jar
> to
> C:\M2\org\apache\openjpa\openjpa-persistence\1.2.0\openjpa-persistence-1.2.0.jar
> [INFO]
> ------------------------------------------------------------------------
> [INFO] Building OpenJPA JPA JDBC
> [INFO]    task-segment: [install]
> [INFO]
> ------------------------------------------------------------------------
> [INFO] [resources:resources]
> [INFO] Using default encoding to copy filtered resources.
> [INFO] [compiler:compile]
> [INFO] Compiling 65 source files to
> C:\SVN\OPENJPA\tags\1.2.0\openjpa-persistence-jdbc\target\classes
> [INFO] [resources:testResources]
> [INFO] Using default encoding to copy filtered resources.
> [INFO] [compiler:testCompile]
> [INFO] Compiling 1185 source files to
> C:\SVN\OPENJPA\tags\1.2.0\openjpa-persistence-jdbc\target\test-classes
> [INFO] [antrun:run {execution: default}]
> [INFO] Executing tasks
>
> enhance:
>
> enhance.all.entities:
>     [echo]  running enhancer
> java.util.zip.ZipException: error in opening zip file
>        at java.util.zip.ZipFile.open(Native Method)
>        at java.util.zip.ZipFile.<init>(ZipFile.java:203)
>        at java.util.zip.ZipFile.<init>(ZipFile.java:234)
>        at
> org.apache.tools.ant.AntClassLoader.getResourceURL(AntClassLoader.java:919)
>        at
>
> org.apache.tools.ant.AntClassLoader$ResourceEnumeration.findNextResource(AntClassLoader.java:126)
>        at
>
> org.apache.tools.ant.AntClassLoader$ResourceEnumeration.nextElement(AntClassLoader.java:109)
>        at
>
> org.apache.tools.ant.util.CollectionUtils$CompoundEnumeration.nextElement(CollectionUtils.java:146)
>        at
> sun.misc.CompoundEnumeration.nextElement(CompoundEnumeration.java:43)
>        at
> org.apache.openjpa.lib.util.Services.getImplementors(Services.java:99)
>        at
> org.apache.openjpa.lib.util.Services.getImplementors(Services.java:71)
>        at
>
> org.apache.openjpa.lib.conf.ProductDerivations.<clinit>(ProductDerivations.java:57)
>        at
> org.apache.openjpa.conf.BrokerFactoryValue.<clinit>(BrokerFactoryValue.java:50)
>        at
>
> org.apache.openjpa.conf.OpenJPAConfigurationImpl.<init>(OpenJPAConfigurationImpl.java:188)
>        at
>
> org.apache.openjpa.conf.OpenJPAConfigurationImpl.<init>(OpenJPAConfigurationImpl.java:164)
>        at
>
> org.apache.openjpa.conf.OpenJPAConfigurationImpl.<init>(OpenJPAConfigurationImpl.java:155)
>        at
> org.apache.openjpa.ant.PCEnhancerTask.newConfiguration(PCEnhancerTask.java:80)
>        at
> org.apache.openjpa.lib.ant.AbstractTask.getConfiguration(AbstractTask.java:97)
>        at
> org.apache.openjpa.lib.ant.AbstractTask.createConfig(AbstractTask.java:151)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:585)
>        at
>
> org.apache.tools.ant.IntrospectionHelper$CreateNestedCreator.create(IntrospectionHelper.java:1244)
>        at
>
> org.apache.tools.ant.IntrospectionHelper$Creator.create(IntrospectionHelper.java:1145)
>        at
> org.apache.tools.ant.UnknownElement.handleChild(UnknownElement.java:549)
>        at
> org.apache.tools.ant.UnknownElement.handleChildren(UnknownElement.java:326)
>        at
> org.apache.tools.ant.UnknownElement.configure(UnknownElement.java:182)
>        at
> org.apache.tools.ant.UnknownElement.maybeConfigure(UnknownElement.java:158)
>        at org.apache.tools.ant.Task.perform(Task.java:363)
>        at org.apache.tools.ant.Target.execute(Target.java:341)
>        at org.apache.tools.ant.Target.performTasks(Target.java:369)
>        at
> org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
>        at
>
> org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:37)
>        at org.apache.tools.ant.Project.executeTargets(Project.java:1068)
>        at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:382)
>        at
> org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:107)
>        at
> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
>        at org.apache.tools.ant.Task.perform(Task.java:364)
>        at org.apache.tools.ant.Target.execute(Target.java:341)
>        at org.apache.tools.ant.Target.performTasks(Target.java:369)
>        at
> org.apache.tools.ant.Project.executeSortedTargets(Project.java:1216)
>        at
>
> org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:37)
>        at org.apache.tools.ant.Project.executeTargets(Project.java:1068)
>        at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:382)
>        at
> org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:275)
>        at org.apache.tools.ant.Task.perform(Task.java:364)
>        at org.apache.tools.ant.Target.execute(Target.java:341)
>        at
>
> org.apache.maven.plugin.antrun.AbstractAntMojo.executeTasks(AbstractAntMojo.java:108)
>        at
> org.apache.maven.plugin.antrun.AntRunMojo.execute(AntRunMojo.java:83)
>        at
>
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451)
>        at
>
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558)
>        at
>
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499)
>        at
>
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478)
>        at
>
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
>        at
>
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
>        at
>
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
>        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
>        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
>        at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>        at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>        at
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>        at java.lang.reflect.Method.invoke(Method.java:585)
>        at
> org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
>        at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
>        at
> org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
>        at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
>
>
> --
> Thanks,
> Tim McConnell
>
>
>

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