Hi
I've got other problem now. I am getting
NullPointerException from CanonicalModelProcessor (see below). Is there a way
to debug the annotation processor to see what might causing
it?
java.lang.RuntimeException: java.lang.NullPointerException
at
org.eclipse.persistence.internal.jpa.modelgen.CanonicalModelProcessor.process(CanonicalModelProcessor.java:366)
at
org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.handleProcessor(RoundDispatcher.java:139)
at
org.eclipse.jdt.internal.compiler.apt.dispatch.RoundDispatcher.round(RoundDispatcher.java:121)
at
org.eclipse.jdt.internal.compiler.apt.dispatch.BaseAnnotationProcessorManager.processAnnotations(BaseAnnotationProcessorManager.java:159)
at
org.eclipse.jdt.internal.apt.pluggable.core.dispatch.IdeAnnotationProcessorManager.processAnnotations(IdeAnnotationProcessorManager.java:134)
at
org.eclipse.jdt.internal.compiler.Compiler.processAnnotations(Compiler.java:809)
at
org.eclipse.jdt.internal.compiler.Compiler.compile(Compiler.java:428)
at
org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:364)
at
org.eclipse.jdt.internal.core.builder.BatchImageBuilder.compile(BatchImageBuilder.java:178)
at
org.eclipse.jdt.internal.core.builder.AbstractImageBuilder.compile(AbstractImageBuilder.java:301)
at
org.eclipse.jdt.internal.core.builder.BatchImageBuilder.build(BatchImageBuilder.java:60)
at
org.eclipse.jdt.internal.core.builder.JavaBuilder.buildAll(JavaBuilder.java:254)
at
org.eclipse.jdt.internal.core.builder.JavaBuilder.build(JavaBuilder.java:173)
at
org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:627)
at
org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:170)
at
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:201)
at
org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:253)
at
org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:256)
at
org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:309)
at
org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:341)
at
org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:140)
at
org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:238)
at
org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by:
java.lang.NullPointerException
at
org.eclipse.persistence.internal.jpa.metadata.ORMetadata.mergeORObjectLists(ORMetadata.java:328)
at
org.eclipse.persistence.internal.jpa.metadata.accessors.classes.XMLAttributes.merge(XMLAttributes.java:252)
at
org.eclipse.persistence.internal.jpa.metadata.accessors.classes.ClassAccessor.merge(ClassAccessor.java:796)
at
org.eclipse.persistence.internal.jpa.metadata.accessors.classes.MappedSuperclassAccessor.merge(MappedSuperclassAccessor.java:394)
at
org.eclipse.persistence.internal.jpa.metadata.xml.XMLEntityMappings.initPersistenceUnitClasses(XMLEntityMappings.java:522)
at
org.eclipse.persistence.internal.jpa.modelgen.objects.PersistenceUnit.initXMLEntityMappings(PersistenceUnit.java:392)
at
org.eclipse.persistence.internal.jpa.modelgen.objects.PersistenceUnit.<init>(PersistenceUnit.java:85)
at
org.eclipse.persistence.internal.jpa.modelgen.objects.PersistenceUnitReader.initPersistenceUnits(PersistenceUnitReader.java:168)
at
org.eclipse.persistence.internal.jpa.modelgen.objects.PersistenceUnitReader.<init>(PersistenceUnitReader.java:63)
at
org.eclipse.persistence.internal.jpa.modelgen.CanonicalModelProcessor.process(CanonicalModelProcessor.java:329)
...
24 more
Regards
Jaro
Guy
Thanks for your answer. This is little but unfortunate,
as it prevents us from having a proper modular desing where POJO domain
objects and DAO interfaces are be defined in one OSGi bundle, and another
OSGi bundle with DAO implementations and mapping files using specific ORM
framework (EclipseLink in our case).
However, I have found a workaround which is based on
having linked folder in Eclipse linking source folder from Project A
to Project B, so when Project B is built, classes from Project A are built too
and metamodel is generated for them. Classes from a linked folder are built
into separate output dir, so they are not mixed with classes defined in source
folder of Project B.
I can post a complete Eclipse project config if anyone is
interested.
Regards
Jaro
I
can't think of a good way to do this off hand. The model gen hooks into the
compiler using APT. Therefore, EntityA would never be a round element when
compiling ProjectB.
You may want to open a bug to have it investigated
further.
In the mean time, you'd have to turn on the model gen for
Project A with the same persistence.xml.
Cheers,
Guy
On
15/04/2010 12:41 PM, Kuruc, Jaro wrote:
Hi
I am testing out
the JPA2 Metamodel generation in Eclipse and it looks like that
EclipseLink's Modelgen Processor is only supporting metamodel
generation for entities defined in the same Eclipse project in which
persistence.xml is defined.
Here's my
setup
Project A:
- defines entity
class EntityA
Project
B:
- depends on
Project A, hence having EntityA on classpath
- defines entity
class EntityB
- defines
persistence.xml
- annotation
processor is switched on
The result is
that EntityB_ is generated, but not EntityA_. I have tried both annotation
based mappings and mappings in orm.xml, but the result is the same.
Is
there a way to tell EclipseLink Annotation Processor to generate metadata
for all classes on classpath? Maybe even restricting it by specifying
package to scan? Thanks.
Regards
Jaro Kuruc
Java/SQL
Developer
Commerzbank AG
Corporates & Markets
Market Risk
Office
address: 30 Gresham Street, London EC2V
7PG, United
Kingdom
Phone
+44 (0)20 7475 8258
jaro.kuruc@xxxxxxxxxxxxxxx
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