Merging transient entity with a component property with parent mapping causes NullPointerException -------------------------------------------------------------------------------------------------- Key: HHH-3868 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3868 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.3.1, 3.2.6 Environment: Core 3.3.1.GA, Annotations 3.4.0.GA, HSQL 1.8, SQLServer2005 Reporter: Vinnie Luther Attachments: TransientMergeComponentParent.zip Merge a transient entity with a component mapping with a parent mapping causes java.lang.NullPointerException at org.hibernate.engine.StatefulPersistenceContext.proxyFor(StatefulPersistenceContext.java:693) at org.hibernate.type.ComponentType.instantiate(ComponentType.java:515) at org.hibernate.type.ComponentType.replace(ComponentType.java:482) at org.hibernate.type.TypeFactory.replace(TypeFactory.java:538) at org.hibernate.event.def.DefaultMergeEventListener.copyValues(DefaultMergeEventListener.java:429) at org.hibernate.event.def.DefaultMergeEventListener.entityIsTransient(DefaultMergeEventListener.java:231) at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:170) at org.hibernate.event.def.DefaultMergeEventListener.onMerge(DefaultMergeEventListener.java:81) at org.hibernate.impl.SessionImpl.fireMerge(SessionImpl.java:704) at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:688) at org.hibernate.impl.SessionImpl.merge(SessionImpl.java:692) at test.TransientMergeComponentParentTest.testTransientMergeComponentParent(TransientMergeComponentParentTest.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.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99) at org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81) at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34) at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75) at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45) at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:66) at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35) at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42) at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34) at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45) 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) Removing @Parent mappings from component solved the problem. Attached is an eclipse project with demonstration minus the hibernate core 3.3.1, annotations 3.4.0 dependencies and hsqldb jar. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira