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Re: [eclipselink-users] Problem with OneToOne relationship, targetEntity and interfaces

Hi Rune,
 
This is a bug, please enter one (and let me know the bug number).
 
In the mean time to get around the problem map your @OneToOne's to TestInterface in XML.
 
Cheers,
Guy
----- Original Message -----
Sent: Saturday, April 19, 2008 12:26 PM
Subject: [eclipselink-users] Problem with OneToOne relationship,targetEntity and interfaces

Hi,

 

After upgrade from EclipseLink M3 to M6 we a problem with OneToOne relationships using interfaces and target entity. I have created a small dummy example which causes the error (at deploy time) and attached the corresponding error trace. Please let me know if you need me to provide more information.

 

Hope someone are able to tell me what is wrong or if a workaround exists.

 

Best regards,

Rune

 

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

 

public interface TestInterface {

}

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

@Entity

public class TestRelation implements TestInterface {

   

    @Id

    @GeneratedValue(strategy = GenerationType.AUTO)

    private long id;

}

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

 

@Entity

public class TestEntity {

 

    @Id

    @GeneratedValue(strategy = GenerationType.AUTO)

    private Long id;

   

    @OneToOne(cascade = CascadeType.ALL, targetEntity = TestRelation.class)

    @JoinColumn(name = "test1_id")

    private TestInterface test1;

   

    @OneToOne(cascade = CascadeType.ALL, targetEntity = TestRelation.class)

    @JoinColumn(name = "test2_id")

    private TestInterface test2;

}

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

Error trace:

 

org.springframework.transaction.CannotCreateTransactionException: Could not open JPA EntityManager for transaction; nested exception is javax.persistence.PersistenceException: Exception [EclipseLink-0] (Eclipse Persistence Services - 1.0 (Build SNAPSHOT - 20080409)): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

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

 

Exception [EclipseLink-48] (Eclipse Persistence Services - 1.0 (Build SNAPSHOT - 20080409)): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [TESTENTITY.DTYPE].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.VariableOneToOneMapping[test2]

Descriptor: RelationalDescriptor(com.statoil.domain.TestEntity --> [DatabaseTable(TESTENTITY)])

 

Runtime Exceptions:

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

 

                at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:375)

                at org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:377)

                at org.springframework.test.AbstractTransactionalSpringContextTests.startNewTransaction(AbstractTransactionalSpringContextTests.java:387)

                at org.springframework.test.AbstractTransactionalSpringContextTests.onSetUp(AbstractTransactionalSpringContextTests.java:217)

                at org.springframework.test.AbstractSingleSpringContextTests.setUp(AbstractSingleSpringContextTests.java:103)

                at junit.framework.TestCase.runBare(TestCase.java:125)

                at org.springframework.test.ConditionalTestCase.runBare(ConditionalTestCase.java:76)

                at org.springframework.test.annotation.AbstractAnnotationAwareTransactionalTests.access$001(AbstractAnnotationAwareTransactionalTests.java:71)

                at org.springframework.test.annotation.AbstractAnnotationAwareTransactionalTests$1.run(AbstractAnnotationAwareTransactionalTests.java:175)

                at org.springframework.test.annotation.AbstractAnnotationAwareTransactionalTests.runTest(AbstractAnnotationAwareTransactionalTests.java:283)

                at org.springframework.test.annotation.AbstractAnnotationAwareTransactionalTests.runTestTimed(AbstractAnnotationAwareTransactionalTests.java:254)

                at org.springframework.test.annotation.AbstractAnnotationAwareTransactionalTests.runBare(AbstractAnnotationAwareTransactionalTests.java:172)

                at org.springframework.test.jpa.AbstractJpaTests.runBare(AbstractJpaTests.java:174)

                at org.springframework.test.jpa.AbstractJpaTests.runBare(AbstractJpaTests.java:255)

                at junit.framework.TestResult$1.protect(TestResult.java:106)

                at junit.framework.TestResult.runProtected(TestResult.java:124)

                at junit.framework.TestResult.run(TestResult.java:109)

                at junit.framework.TestCase.run(TestCase.java:118)

                at junit.framework.TestSuite.runTest(TestSuite.java:208)

                at junit.framework.TestSuite.run(TestSuite.java:203)

                at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)

                at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)

                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)

                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)

                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)

                at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

Caused by: javax.persistence.PersistenceException: Exception [EclipseLink-0] (Eclipse Persistence Services - 1.0 (Build SNAPSHOT - 20080409)): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

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

 

Exception [EclipseLink-48] (Eclipse Persistence Services - 1.0 (Build SNAPSHOT - 20080409)): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [TESTENTITY.DTYPE].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.VariableOneToOneMapping[test2]

Descriptor: RelationalDescriptor(com.statoil.domain.TestEntity --> [DatabaseTable(TESTENTITY)])

 

Runtime Exceptions:

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

 

                at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:255)

                at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:69)

                at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:118)

                at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:112)

                at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:100)

                at org.springframework.orm.jpa.JpaTransactionManager.createEntityManagerForTransaction(JpaTransactionManager.java:392)

                at org.springframework.orm.jpa.JpaTransactionManager.doBegin(JpaTransactionManager.java:320)

                ... 25 more

Caused by: Exception [EclipseLink-0] (Eclipse Persistence Services - 1.0 (Build SNAPSHOT - 20080409)): org.eclipse.persistence.exceptions.IntegrityException

Descriptor Exceptions:

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

 

Exception [EclipseLink-48] (Eclipse Persistence Services - 1.0 (Build SNAPSHOT - 20080409)): org.eclipse.persistence.exceptions.DescriptorException

Exception Description: Multiple writable mappings exist for the field [TESTENTITY.DTYPE].  Only one may be defined as writable, all others must be specified read-only.

Mapping: org.eclipse.persistence.mappings.VariableOneToOneMapping[test2]

Descriptor: RelationalDescriptor(com.statoil.domain.TestEntity --> [DatabaseTable(TESTENTITY)])

 

Runtime Exceptions:

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

 

                at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:472)

                at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:404)

                at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:649)

                at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.login(DatabaseSessionImpl.java:615)

                at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:216)

                at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:234)

                ... 31 more

 

 

 

 

 

 

 

 


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