PK87874: NULL POINTER EXCEPTION WHEN OPENJPA MAPPED-SUPERCLASS IS USED IN CONJUNCTION WITH AN ENTITY THAT USES AN ID-CLASS.

APAR status

• Closed as program error.

Error description

• The problem was detected in WebSphere Application Server
  Version 6.1.0.23 with Feature Pack for EJB 3.0. The problem can
  also occur in any WebSphere Application Server Version 6.1 with
  Feature Pack for EJB 3.0. and WebSphere Application Server
  Version
  7.o.
  
  The full description of the problem was referenced from:
  
  https://issues.apache.org/jira/browse/OPENJPA-873
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server Feature Pack for EJB 3.0             *
  ****************************************************************
  * PROBLEM DESCRIPTION: A NullPointerException is thrown        *
  *                      during entity metadata processing.      *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  When enhancing certain entities that follow the pattern where
  an entity declaring a compound identity with the @IdClass
  approach inherits from a mapped superclass, a
  NullPointerException can result, with the sample stack dump:
  
  Exception in thread "main" java.lang.NullPointerException
      at
  org.apache.openjpa.meta.ClassMetaData.validateAppIdClass(ClassMe
  taData.java:1883)
      at
  org.apache.openjpa.meta.ClassMetaData.validateIdentity(ClassMeta
  Data.java:1840)
      at
  org.apache.openjpa.meta.ClassMetaData.validateMeta(ClassMetaData
  .java:1757)
      at
  org.apache.openjpa.meta.ClassMetaData.resolve(ClassMetaData.java
  :1630)
      at
  org.apache.openjpa.meta.MetaDataRepository.processBuffer(MetaDat
  aRepository.java:717)
      at
  org.apache.openjpa.meta.MetaDataRepository.resolveMeta(MetaDataR
  epository.java:616)
      at
  org.apache.openjpa.meta.MetaDataRepository.resolve(MetaDataRepos
  itory.java:541)
      at
  org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataR
  epository.java:308)
      at
  org.apache.openjpa.enhance.PCEnhancer.<init>(PCEnhancer.java:249
  )
      at
  org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:4502)
      at
  org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:4449)
      at
  org.apache.openjpa.enhance.PCEnhancer$1.run(PCEnhancer.java:4419
  )
      at
  org.apache.openjpa.lib.conf.Configurations.launchRunnable(Config
  urations.java:726)
      at
  org.apache.openjpa.lib.conf.Configurations.runAgainstAllAnchors(
  Configurations.java:716)
      at
  org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:4414)
      at
  org.apache.openjpa.enhance.PCEnhancer.main(PCEnhancer.java:4405)
  

Problem conclusion

• The proper check is now made during the enhancement process to
  avoid the NullPointerException.
  
  The fix for this APAR is currently targeted for inclusion in
  fix pack 6.1.0.29.  Please refer to the Recommended Updates
  page for delivery information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  PK92902

Fix information

• Fixed component name

  WAS EJB3 FEATUR

• Fixed component ID

  5724J0851

Applicable component levels

• R610 PSY

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