OpenJPA
  1. OpenJPA
  2. OPENJPA-1497

org.apache.openjpa.persistence.PersistenceException is thrown while merging detached entity back to the persistence context.

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Major Major
    • Resolution: Cannot Reproduce
    • Affects Version/s: 1.2.1
    • Fix Version/s: None
    • Component/s: kernel
    • Labels:
    • Environment:
      WinXP, JDK 1.6.0_17, H2/Postgres

      Description

      1. Create an entity which has a one-to-many relationship with other entity (MyEntity ---> MyOtherEntity)
      2. Persist the entity.
      3. Query the earlier created entity using JPQL.
      4. Detach the entyty using OpenJPAEntityManager.detach() method.
      5. Query for some entities which the created entity has a one-to-many relashionship (MyOtherEntity) and update the entity with the result of the query, i.e. myEntity.setMyOtherEntities(query.getResultList());
      6. Try to attach the entity back to the persistence context using EntityManager.merge() method.

      ACT: You will end up with the PersistenceException:

      <openjpa-1.2.1-r752877:753278 fatal general error> org.apache.openjpa.persistence.PersistenceException: Unable to instantiate proxy for type "org.apache.openjpa.kernel.DelegatingResultList". Make sure the class has a default constructor.
      at org.apache.openjpa.util.ProxyManagerImpl.instantiateProxy(ProxyManagerImpl.java:500)
      at org.apache.openjpa.util.ProxyManagerImpl.getFactoryProxyCollection(ProxyManagerImpl.java:365)
      at org.apache.openjpa.util.ProxyManagerImpl.copyCollection(ProxyManagerImpl.java:182)
      at org.apache.openjpa.kernel.AttachStrategy.copyCollection(AttachStrategy.java:344)
      at org.apache.openjpa.kernel.AttachStrategy.attachCollection(AttachStrategy.java:321)
      at org.apache.openjpa.kernel.AttachStrategy.replaceList(AttachStrategy.java:359)
      at org.apache.openjpa.kernel.AttachStrategy.attachField(AttachStrategy.java:223)
      at org.apache.openjpa.kernel.VersionAttachStrategy.attach(VersionAttachStrategy.java:161)
      at org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:241)
      at org.apache.openjpa.kernel.AttachManager.attach(AttachManager.java:101)
      at org.apache.openjpa.kernel.BrokerImpl.attach(BrokerImpl.java:3212)
      at org.apache.openjpa.kernel.DelegatingBroker.attach(DelegatingBroker.java:1158)
      at org.apache.openjpa.persistence.EntityManagerImpl.merge(EntityManagerImpl.java:769)
      at test.MyEntityPersitenceTest.testAttach(MyEntityPersitenceTest.java:114)
      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.InvokeMethod.evaluate(InvokeMethod.java:20)
      at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
      at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:73)
      at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
      at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
      at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
      at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
      at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
      at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
      at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
      at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:62)
      at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:140)
      at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:127)
      at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
      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.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
      at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)

        Activity

        Nik Maximov created issue -
        Hide
        Nik Maximov added a comment -

        Here is the test case which can be used to reproduce the issue.

        Show
        Nik Maximov added a comment - Here is the test case which can be used to reproduce the issue.
        Nik Maximov made changes -
        Field Original Value New Value
        Attachment test-openjpa-detach.zip [ 12434942 ]
        Hide
        Rick Curtis added a comment -

        This problem looks very similar to the one that was fixed by OPENJPA-1352. Can you give the 2.0.0 release or trunk a try?

        Show
        Rick Curtis added a comment - This problem looks very similar to the one that was fixed by OPENJPA-1352 . Can you give the 2.0.0 release or trunk a try?
        Hide
        Nik Maximov added a comment -

        I checked with 2.0.0 release (build time enhancement). It works for me now. The CR can be closed.
        Thanks.

        Show
        Nik Maximov added a comment - I checked with 2.0.0 release (build time enhancement). It works for me now. The CR can be closed. Thanks.
        Michael Dick made changes -
        Status Open [ 1 ] Closed [ 6 ]
        Resolution Cannot Reproduce [ 5 ]

          People

          • Assignee:
            Unassigned
            Reporter:
            Nik Maximov
          • Votes:
            0 Vote for this issue
            Watchers:
            1 Start watching this issue

            Dates

            • Created:
              Updated:
              Resolved:

              Development