Minto van der Sluis created ISIS-265:
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             Summary: NullPointerException when storing new objects
                 Key: ISIS-265
                 URL: https://issues.apache.org/jira/browse/ISIS-265
             Project: Isis
          Issue Type: Bug
          Components: Runtimes: Dflt
    Affects Versions: 0.3.1-incubating
            Reporter: Minto van der Sluis
             Fix For: 0.3.1-incubating


After switching from 0.2.0 to trunk creating new objects resulted into a NPE 
with the following output to the screen:

java.lang.NullPointerException
        at  
org.apache.isis.core.metamodel.adapter.version.ConcurrencyException.buildMessage(ConcurrencyException.java:36)
        at  
org.apache.isis.core.metamodel.adapter.version.ConcurrencyException.(ConcurrencyException.java:50)
        at  
org.apache.isis.runtimes.dflt.runtime.persistence.adapter.PojoAdapter.checkLock(PojoAdapter.java:337)
        at  
org.apache.isis.viewer.html.context.PersistentRootAdapterMapping.checkVersion(PersistentRootAdapterMapping.java:56)
        at  
org.apache.isis.viewer.html.context.Context.getMappedObject(Context.java:284)
....

See also mailing list messages:
1) 
http://mail-archives.apache.org/mod_mbox/incubator-isis-dev/201209.mbox/%3C20120904162634.498360cc2mehz2ca%40webmail.xup.nl%3E
2) 
http://mail-archives.apache.org/mod_mbox/incubator-isis-dev/201209.mbox/%3C20120905105456.3062774yn2htlylc%40webmail.xup.nl%3E

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