java.lang.NullPointerException

openjpa-users | Fay Wang | 8 years ago
tip
Your exception is missing from the Samebug knowledge base.
Here are the best solutions we found on the Internet.
Click on the to mark the helpful solution and get rewards for you help.
  1. 0

    Re: @MappedSuperClass Cause Null Pointer Exception in Class With IdClass

    openjpa-users | 8 years ago | Fay Wang
    java.lang.NullPointerException

    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at org.apache.openjpa.meta.ClassMetaData.validateAppIdClass()
    2. OpenJPA Aggregate Jar
      PCEnhancer.main
      1. org.apache.openjpa.meta.ClassMetaData.validateAppIdClass(ClassMetaData.java:1883)
      2. org.apache.openjpa.meta.ClassMetaData.validateIdentity(ClassMetaData.java:1840)
      3. org.apache.openjpa.meta.ClassMetaData.validateMeta(ClassMetaData.java:1757)
      4. org.apache.openjpa.meta.ClassMetaData.resolve(ClassMetaData.java:1630)
      5. org.apache.openjpa.meta.MetaDataRepository.processBuffer(MetaDataRepository.java:717)
      6. org.apache.openjpa.meta.MetaDataRepository.resolveMeta(MetaDataRepository.java:616)
      7. org.apache.openjpa.meta.MetaDataRepository.resolve(MetaDataRepository.java:541)
      8. org.apache.openjpa.meta.MetaDataRepository.getMetaData(MetaDataRepository.java:308)
      9. org.apache.openjpa.enhance.PCEnhancer.<init>(PCEnhancer.java:249)
      10. org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:4502)
      11. org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:4449)
      12. org.apache.openjpa.enhance.PCEnhancer$1.run(PCEnhancer.java:4419)
      13. org.apache.openjpa.lib.conf.Configurations.launchRunnable(Configurations.java:726)
      14. org.apache.openjpa.lib.conf.Configurations.runAgainstAllAnchors(Configurations.java:716)
      15. org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:4414)
      16. org.apache.openjpa.enhance.PCEnhancer.main(PCEnhancer.java:4405)
      16 frames