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https://issues.apache.org/jira/browse/OPENJPA-1141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12728200#action_12728200
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Michael Dick commented on OPENJPA-1141:
---------------------------------------
The entities contain comments indicating that they were generated. Did you use
the OpenJPA ReverseMappingTool, or something else (ie Dali)?
If you used the OpenJPAReverseMappingTool then would it be possible to see the
table ddl that resulted in these entities? It looks like some annotations need
to be added to complete the mappings.
> NPE at
> org.apache.openjpa.jdbc.meta.MappingInfo.mergeJoinColumn(MappingInfo.java:1400)
> ---------------------------------------------------------------------------------------
>
> Key: OPENJPA-1141
> URL: https://issues.apache.org/jira/browse/OPENJPA-1141
> Project: OpenJPA
> Issue Type: Bug
> Components: jdbc
> Affects Versions: 1.2.0
> Reporter: Yann
> Fix For: 1.2.2
>
> Attachments: TestMappingProblem.zip
>
>
> 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
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