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
http://www.commerzbank.com
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