[OPENJPA-1631] MetaDataRepository preload doesn't load JAXB meta data

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.2, 2.0.0-beta3
• Fix Version/s: 2.0.0
• Assignee: Richard G. Curtis
• Reporter: Richard G. Curtis
• Created: 13/Apr/10 19:48
• Updated: 09/Aug/13 21:27
• Resolved: 15/Apr/10 16:41

Description

The MetaDataRepository preloading doesn't process JAXB xml meta data on EMF creation, resulting in a condition where multiple threads can trample on each other. AnnotationPersistenceXMLMetaDataParser.parse(..) isn't thread-safe and relied on the MetaDataRepository to enforce synchronization. After preloading is complete, all locks are removed from the MetaDataRepository and in turn AnnotationPersistenceXMLMetaDataParser can have some threading problems.

Caused by: java.lang.NullPointerException
at org.apache.openjpa.lib.util.J2DoPrivHelper$56.run(J2DoPrivHelper.java:1163)
at org.apache.openjpa.lib.util.J2DoPrivHelper$56.run(J2DoPrivHelper.java:1161)
at java.security.AccessController.doPrivileged(AccessController.java:202)
at org.apache.openjpa.persistence.AnnotationPersistenceXMLMetaDataParser.parseXMLClassAnnotations(AnnotationPersistenceXMLMetaDataParser.java:175)
at org.apache.openjpa.persistence.AnnotationPersistenceXMLMetaDataParser.parse(AnnotationPersistenceXMLMetaDataParser.java:163)
at org.apache.openjpa.persistence.PersistenceMetaDataFactory.loadXMLMetaData(PersistenceMetaDataFactory.java:579)
at org.apache.openjpa.meta.MetaDataRepository.getXMLMetaDataInternal(MetaDataRepository.java:2376)
at org.apache.openjpa.meta.MetaDataRepository.getXMLMetaData(MetaDataRepository.java:2364)
at org.apache.openjpa.kernel.exps.AbstractExpressionBuilder.traversePath(AbstractExpressionBuilder.java:315)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getPath(JPQLExpressionBuilder.java:1941)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getPathOrConstant(JPQLExpressionBuilder.java:1861)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.eval(JPQLExpressionBuilder.java:1169)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getValue(JPQLExpressionBuilder.java:2054)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getValue(JPQLExpressionBuilder.java:2040)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.eval(JPQLExpressionBuilder.java:1055)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getExpression(JPQLExpressionBuilder.java:1970)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.eval(JPQLExpressionBuilder.java:997)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.evalWhereClause(JPQLExpressionBuilder.java:668)
at org.apache.openjpa.kernel.jpql.JPQLExpressionBuilder.getQueryExpressions(JPQLExpressionBuilder.java:297)
at org.apache.openjpa.kernel.jpql.JPQLParser.eval(JPQLParser.java:67)

Issue Links

• relates to: OPENJPA-1634 Loading JAXB meta data when using MetaDataRepository preloading isn't thead safe.