[OPENJPA-1141] NPE at org.apache.openjpa.jdbc.meta.MappingInfo.mergeJoinColumn(MappingInfo.java:1400)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.0
• Fix Version/s: 1.2.2, 1.3.0, 2.0.0-beta
• Component/s: jdbc
• Assignee: Jody Grassel
• Reporter: Yann
• Created: 19/Jun/09 15:35
• Updated: 17/Jan/11 14:28
• Resolved: 08/Jan/10 00:07

Description

We have the NPE shown below in a reproducible testcase (ZIP attached to JIRA ...).

We've reduced our complex intended target domain model (about 200+ Entities) to a simpler model with only 3 classes which illustrate the problem: You'll find attached a test project with a first entity which has a a OneToMany (with an ElementJoinColumns, but that shouldn't matter?) to a second entity has a ManyToOne to a third entity. The middle entity has a Composite ID Class including a ManyToOne as a key, which according to http://openjpa.apache.org/builds/1.2.0/apache-openjpa-1.2.0/docs/manual/ref_guide_pc_oid.html#ref_guide_pc_oid_entitypk is supported, so this seems a bug in OpenJPA's mapping algos, somehow?

<openjpa-1.2.1-r752877:753278 nonfatal general error> org.apache.openjpa.persistence.PersistenceException: null
at org.apache.openjpa.kernel.QueryImpl.compileForCompilation(QueryImpl.java:610)
at org.apache.openjpa.kernel.QueryImpl.compileForExecutor(QueryImpl.java:667)
at org.apache.openjpa.kernel.QueryImpl.getOperation(QueryImpl.java:1492)
at org.apache.openjpa.kernel.DelegatingQuery.getOperation(DelegatingQuery.java:123)
at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:243)
at org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:294)
at testcase.TestMappingProblem.doTest(TestMappingProblem.java:42)
at testcase.TestMappingProblem.testIt(TestMappingProblem.java:20)
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 junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
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 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.junit.JUnitTestSet.execute(JUnitTestSet.java:213)
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)
Caused by: java.lang.NullPointerException
at org.apache.openjpa.jdbc.meta.MappingInfo.mergeJoinColumn(MappingInfo.java:1400)
at org.apache.openjpa.jdbc.meta.MappingInfo.createJoins(MappingInfo.java:1206)
at org.apache.openjpa.jdbc.meta.MappingInfo.createForeignKey(MappingInfo.java:968)
at org.apache.openjpa.jdbc.meta.ValueMappingInfo.getTypeJoin(ValueMappingInfo.java:104)
at org.apache.openjpa.jdbc.meta.strats.RelationFieldStrategy.map(RelationFieldStrategy.java:157)
at org.apache.openjpa.jdbc.meta.FieldMapping.setStrategy(FieldMapping.java:121)
at org.apache.openjpa.jdbc.meta.RuntimeStrategyInstaller.installStrategy(RuntimeStrategyInstaller.java:80)
at org.apache.openjpa.jdbc.meta.FieldMapping.resolveMapping(FieldMapping.java:454)
at org.apache.openjpa.jdbc.meta.FieldMapping.resolve(FieldMapping.java:419)
at org.apache.openjpa.jdbc.meta.ClassMapping.resolveNonRelationMappings(ClassMapping.java:869)
at org.apache.openjpa.jdbc.meta.MappingRepository.prepareMapping(MappingRepository.java:339)
at org.apache.openjpa.meta.MetaDataRepository.preMapping(MetaDataRepository.java:662)
at org.apache.openjpa.meta.MetaDataRepository.resolve(MetaDataRepository.java:549)
at org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepository.java:308)
at org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepository.java:363)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getClassMetaData(JPQLExpressionBuilder.java:159)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.resolveClassMetaData(JPQLExpressionBuilder.java:139)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getCandidateMetaData(JPQLExpressionBuilder.java:225)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getCandidateMetaData(JPQLExpressionBuilder.java:195)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getCandidateType(JPQLExpressionBuilder.java:188)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.access$600(JPQLExpressionBuilder.java:69)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder$ParsedJPQL.populate(JPQLExpressionBuilder.java:1756)
at org.apache.openjpa.kernel.jpql.JPQLParser.populate(JPQLParser.java:56)
at org.apache.openjpa.kernel.ExpressionStoreQuery.populateFromCompilation(ExpressionStoreQuery.java:153)
at org.apache.openjpa.kernel.QueryImpl.newCompilation(QueryImpl.java:658)
at org.apache.openjpa.kernel.QueryImpl.compilationFromCache(QueryImpl.java:639)
at org.apache.openjpa.kernel.QueryImpl.compileForCompilation(QueryImpl.java:605)
... 33 more

Issue Links

• relates to: OPENJPA-1736 Mappings with foreign keys as identity fields sometimes not resolved correctly