Skip to main content
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [List Home]
Re: [eclipselink-users] Re: Problem generating metamodel (Guy Pelletier)
Gopal,

Your issue seems to be the same as another user (Jaro) reported. I've reproduced the error and it is caused by mapped superclasses from xml not being initialized correctly. I asked Jaro to enter a bug. Please vote for the bug.

In the mean time you can get around the issue by specifying you mapped superclasses using annotations rather than XML.

Cheers,
Guy

On 19/04/2010 10:00 PM, Gopal Janjanam wrote:
Thanks Guy,
When I said I have explicitly defined access to "field", I have <access>Field</access> element defined in orm.xml under top node. Adding the access="Field" on every entity made me get pass that error.
But now getting following big trace. Any clue why getting this NPE exception.


    [javac] error: java.lang.NullPointerException
    [javac] Note: org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement.getDeclaredAnnotationsCount(MetadataAnnotatedElement.java:205)
    [javac] Note: org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement.hasDeclaredAnnotations(MetadataAnnotatedElement.java:347)
    [javac] Note: org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor.havePersistenceFieldAnnotationsDefined(ClassAccessor.java:673)
    [javac] Note: org.eclipse.persistence.internal.jpa.metadata.accessors.classes.MappedSuperclassAccessor.processAccessType(MappedSuperclassAccessor.java:483)
    [javac] Note: org.eclipse.persistence.internal.jpa.metadata.accessors.classes.MappedSuperclassAccessor.preProcessForCanonicalModel(MappedSuperclassAccessor.java:452)
    [javac] Note: org.eclipse.persistence.internal.jpa.modelgen.objects.PersistenceUnit.preProcessForCanonicalModel(PersistenceUnit.java:451)
    [javac] Note: org.eclipse.persistence.internal.jpa.modelgen.CanonicalModelProcessor.process(CanonicalModelProcessor.java:352)
    [javac] Note: com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:624)
    [javac] Note: com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:553)
    [javac] Note: com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:698)
    [javac] Note: com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:981)
    [javac] Note: com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:727)
    [javac] Note: com.sun.tools.javac.main.Main.compile(Main.java:353)
    [javac] Note: com.sun.tools.javac.main.Main.compile(Main.java:279)
    [javac] Note: com.sun.tools.javac.main.Main.compile(Main.java:270)
    [javac] Note: com.sun.tools.javac.Main.compile(Main.java:69)
    [javac] Note: sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    [javac] Note: sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    [javac] Note: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [javac] Note: java.lang.reflect.Method.invoke(Method.java:597)
    [javac] Note: org.apache.tools.ant.taskdefs.compilers.Javac13.execute(Javac13.java:56)
    [javac] Note: org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1065)
    [javac] Note: org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:882)
    [javac] Note: org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
    [javac] Note: sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    [javac] Note: sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [javac] Note: java.lang.reflect.Method.invoke(Method.java:597)
    [javac] Note: org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    [javac] Note: org.apache.tools.ant.Task.perform(Task.java:348)
    [javac] Note: org.apache.tools.ant.Target.execute(Target.java:357)
    [javac] Note: org.apache.tools.ant.Target.performTasks(Target.java:385)
    [javac] Note: org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
    [javac] Note: org.apache.tools.ant.Project.executeTarget(Project.java:1306)
    [javac] Note: org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
    [javac] Note: org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
    [javac] Note: org.apache.tools.ant.Project.executeTargets(Project.java:1189)
    [javac] Note: org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
    [javac] Note: org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
    [javac] An annotation processor threw an uncaught exception.
    [javac] Consult the following stack trace for details.
    [javac] java.lang.RuntimeException: java.lang.NullPointerException
    [javac]     at org.eclipse.persistence.internal.jpa.modelgen.CanonicalModelProcessor.process(CanonicalModelProcessor.java:365)
    [javac]     at com.sun.tools.javac.processing.JavacProcessingEnvironment.callProcessor(JavacProcessingEnvironment.java:624)
    [javac]     at com.sun.tools.javac.processing.JavacProcessingEnvironment.discoverAndRunProcs(JavacProcessingEnvironment.java:553)
    [javac]     at com.sun.tools.javac.processing.JavacProcessingEnvironment.doProcessing(JavacProcessingEnvironment.java:698)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.processAnnotations(JavaCompiler.java:981)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:727)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:353)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:279)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:270)
    [javac]     at com.sun.tools.javac.Main.compile(Main.java:69)
    [javac]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    [javac]     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    [javac]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [javac]     at java.lang.reflect.Method.invoke(Method.java:597)
    [javac]     at org.apache.tools.ant.taskdefs.compilers.Javac13.execute(Javac13.java:56)
    [javac]     at org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:1065)
    [javac]     at org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:882)
    [javac]     at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
    [javac]     at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    [javac]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [javac]     at java.lang.reflect.Method.invoke(Method.java:597)
    [javac]     at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
    [javac]     at org.apache.tools.ant.Task.perform(Task.java:348)
    [javac]     at org.apache.tools.ant.Target.execute(Target.java:357)
    [javac]     at org.apache.tools.ant.Target.performTasks(Target.java:385)
    [javac]     at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
    [javac]     at org.apache.tools.ant.Project.executeTarget(Project.java:1306)
    [javac]     at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
    [javac]     at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
    [javac]     at org.apache.tools.ant.Project.executeTargets(Project.java:1189)
    [javac]     at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
    [javac]     at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
    [javac] Caused by: java.lang.NullPointerException
    [javac]     at org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement.getDeclaredAnnotationsCount(MetadataAnnotatedElement.java:205)
    [javac]     at org.eclipse.persistence.internal.jpa.metadata.accessors.objects.MetadataAnnotatedElement.hasDeclaredAnnotations(MetadataAnnotatedElement.java:347)
    [javac]     at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor.havePersistenceFieldAnnotationsDefined(ClassAccessor.java:673)
    [javac]     at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.MappedSuperclassAccessor.processAccessType(MappedSuperclassAccessor.java:483)
    [javac]     at org.eclipse.persistence.internal.jpa.metadata.accessors.classes.MappedSuperclassAccessor.preProcessForCanonicalModel(MappedSuperclassAccessor.java:452)
    [javac]     at org.eclipse.persistence.internal.jpa.modelgen.objects.PersistenceUnit.preProcessForCanonicalModel(PersistenceUnit.java:451)
    [javac]     at org.eclipse.persistence.internal.jpa.modelgen.CanonicalModelProcessor.process(CanonicalModelProcessor.java:352)
    [javac]     ... 31 more


-------------------------------------

Date: Mon, 19 Apr 2010 13:14:40 -0400
From: Guy Pelletier <guy.pelletier@xxxxxxxxxx>
Subject: Re: [eclipselink-users] Problem generating metamodel
To: EclipseLink User Discussions <eclipselink-users@xxxxxxxxxxx>
Message-ID: <4BCC8F80.4060507@xxxxxxxxxx>
Content-Type: text/plain; charset="iso-8859-1"

Interesting, if you add access=FIELD to the entity specification, that is,

<entity class="UserGroupList" name="UserGroupList" access=FIELD>

You still get the exception? I'm wondering if the @Override annotations
are causing an invalid property access and invalid persistence mapping
detection. Could be a bug here.

Cheers,
Guy

**


_______________________________________________
eclipselink-users mailing list
eclipselink-users@xxxxxxxxxxx
https://dev.eclipse.org/mailman/listinfo/eclipselink-users

Back to the top