Hello! We have the NPE shown below in a reproducible testcase (ZIP attached to this JIRA issue: https://issues.apache.org/jira/browse/OPENJPA-1141 <https://issues.apache.org/jira/browse/OPENJPA-1141> ).
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? Appreciate any ideas what we may be doing wrong, or bugfixes if this is indeed an OpenJPA Defect, as we suspect. Regards, Michael & Yann <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:66 7) at org.apache.openjpa.kernel.QueryImpl.getOperation(QueryImpl.java:1492) at org.apache.openjpa.kernel.DelegatingQuery.getOperation(DelegatingQuery.j ava:123) at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:243) at org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:29 4) 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.jav a:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor Impl.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.jav a:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.maven.surefire.junit.JUnitTestSet.execute(JUnitTestSet.java:2 13) at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSe t(AbstractDirectoryTestSuite.java:140) at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(Abstr actDirectoryTestSuite.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.jav a:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(Suref ireBooter.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.jav a:1400) at org.apache.openjpa.jdbc.meta.MappingInfo.createJoins(MappingInfo.java:12 06) at org.apache.openjpa.jdbc.meta.MappingInfo.createForeignKey(MappingInfo.ja va:968) at org.apache.openjpa.jdbc.meta.ValueMappingInfo.getTypeJoin(ValueMappingIn fo.java:104) at org.apache.openjpa.jdbc.meta.strats.RelationFieldStrategy.map(RelationFi eldStrategy.java:157) at org.apache.openjpa.jdbc.meta.FieldMapping.setStrategy(FieldMapping.java: 121) at org.apache.openjpa.jdbc.meta.RuntimeStrategyInstaller.installStrategy(Ru ntimeStrategyInstaller.java:80) at org.apache.openjpa.jdbc.meta.FieldMapping.resolveMapping(FieldMapping.ja va:454) at org.apache.openjpa.jdbc.meta.FieldMapping.resolve(FieldMapping.java:419) at org.apache.openjpa.jdbc.meta.ClassMapping.resolveNonRelationMappings(Cla ssMapping.java:869) at org.apache.openjpa.jdbc.meta.MappingRepository.prepareMapping(MappingRep ository.java:339) at org.apache.openjpa.meta.MetaDataRepository.preMapping(MetaDataRepository .java:662) at org.apache.openjpa.meta.MetaDataRepository.resolve(MetaDataRepository.ja va:549) at org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepositor y.java:308) at org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepositor y.java:363) at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getClassMetaData(JP QLExpressionBuilder.java:159) at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.resolveClassMetaDat a(JPQLExpressionBuilder.java:139) at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getCandidateMetaDat a(JPQLExpressionBuilder.java:225) at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getCandidateMetaDat a(JPQLExpressionBuilder.java:195) at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getCandidateType(JP QLExpressionBuilder.java:188) at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.access$600(JPQLExpr essionBuilder.java:69) at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder$ParsedJPQL.populate (JPQLExpressionBuilder.java:1756) at org.apache.openjpa.kernel.jpql.JPQLParser.populate(JPQLParser.java:56) at org.apache.openjpa.kernel.ExpressionStoreQuery.populateFromCompilation(E xpressionStoreQuery.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 ____________________________________________________________ This email and any files transmitted with it are CONFIDENTIAL and intended solely for the use of the individual or entity to which they are addressed. 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