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[See also bug description in the forum: http://www.eclipse.org/forums/index.php?t=rview&th=203118] I got the following entities: @Entity public class A implements Serializable { @Id @GeneratedValue private long id; private String value; public String getValue() { return value; } public void setValue(String value) { this.value = value; } public long getId() { return id; } public void setId(long id) { this.id = id; } } and @Entity public class B implements Serializable { @Id @GeneratedValue private long id; @ManyToOne(fetch = FetchType.LAZY) private A a; public long getId() { return id; } public void setId(long id) { this.id = id; } public A getA() { return a; } public void setA(A a) { this.a = a; } } When I deploy those entities, I got the following error: Local Exception Stack: Exception [EclipseLink-60] (Eclipse Persistence Services - 2.1.2.v20101206-r8635): org.eclipse.persistence.exceptions.DescriptorException Exception Description: The method [_persistence_set_a_vh] or [_persistence_get_a_vh] is not defined in the object [ili.ili4.entities.B]. Internal Exception: java.lang.NoSuchMethodException: ili.ili4.entities.B._persistence_get_a_vh() Mapping: org.eclipse.persistence.mappings.ManyToOneMapping[a] Descriptor: RelationalDescriptor(ili.ili4.entities.B --> [DatabaseTable(B)]) at org.eclipse.persistence.exceptions.DescriptorException.noSuchMethodWhileInitializingAttributesInMethodAccessor(DescriptorException.java:1154) at org.eclipse.persistence.internal.descriptors.MethodAttributeAccessor.initializeAttributes(MethodAttributeAccessor.java:175) at org.eclipse.persistence.internal.descriptors.MethodAttributeAccessor.initializeAttributes(MethodAttributeAccessor.java:156) at org.eclipse.persistence.mappings.DatabaseMapping.preInitialize(DatabaseMapping.java:1241) at org.eclipse.persistence.mappings.ForeignReferenceMapping.preInitialize(ForeignReferenceMapping.java:1004) at org.eclipse.persistence.mappings.ObjectReferenceMapping.preInitialize(ObjectReferenceMapping.java:925) at org.eclipse.persistence.descriptors.ClassDescriptor.preInitialize(ClassDescriptor.java:3360) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:429) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:406) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:666) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:615) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228) at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:389) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:164) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:221) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:209) at ili.ili4.tests.ConsultationTest.setUp(ConsultationTest.java:31) 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:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) Caused by: java.lang.NoSuchMethodException: ili.ili4.entities.B._persistence_get_a_vh() at java.lang.Class.getDeclaredMethod(Class.java:1937) at org.eclipse.persistence.internal.security.PrivilegedAccessHelper.findMethod(PrivilegedAccessHelper.java:61) at org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getMethod(PrivilegedAccessHelper.java:252) at org.eclipse.persistence.internal.helper.Helper.getDeclaredMethod(Helper.java:1055) at org.eclipse.persistence.internal.descriptors.MethodAttributeAccessor.initializeAttributes(MethodAttributeAccessor.java:168) ... 38 more Runtime Exceptions: --------------------------------------------------------- java.lang.NullPointerException at org.eclipse.persistence.internal.security.PrivilegedAccessHelper.getMethodReturnType(PrivilegedAccessHelper.java:326) at org.eclipse.persistence.internal.descriptors.MethodAttributeAccessor.getGetMethodReturnType(MethodAttributeAccessor.java:112) at org.eclipse.persistence.mappings.ForeignReferenceMapping.validateBeforeInitialization(ForeignReferenceMapping.java:1709) at org.eclipse.persistence.descriptors.ClassDescriptor.validateBeforeInitialization(ClassDescriptor.java:5310) at org.eclipse.persistence.descriptors.ClassDescriptor.preInitialize(ClassDescriptor.java:3366) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:429) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:406) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:666) at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:615) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228) at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:389) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:164) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:221) at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:209) at ili.ili4.tests.ConsultationTest.setUp(ConsultationTest.java:31) 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:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:27) at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) at org.junit.runners.ParentRunner.run(ParentRunner.java:236) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) I use static weaving declared in my persistence.xml file.
Created attachment 187212 [details] Test Case showing the bug Please find enclosed a test case showing the problem. I removed from the archive derby.jar, eclipselink.jar (2.1.2) and javax.persistence.2.0.1.jar. You will need to use your own copy of eclipselink and your own DB and change accordingly the persistence.xml file. If the @ManyToOne(fetch = FetchType.LAZY) annotatation class B is changed into @ManyToOne(fetch = FetchType.EAGER) the test pass.
Problem is that the test is using the "eclipselink.weaving" proprety with a value="static" in the persistence.xml, but has not run the static weaver on the compiled classes. The eclipselink.weaving = static tells EclipseLink that weaving has been performed already, which causes a problem when it tries to use the _persistence_get_a_vh to access the valueholder for a lazy relationship. Please see http://wiki.eclipse.org/Using_EclipseLink_JPA_Extensions_(ELUG)#Using_EclipseLink_JPA_Weaving for the options available for weaving which is required for lazy OneToOne and ManyToOne relationships.
The Eclipselink project has moved to Github: https://github.com/eclipse-ee4j/eclipselink
