Re: DataRowStore.sendUpdateNotification NullPointerException

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Wed Sep 12 2007 - 12:54:20 EDT

  • Next message: Gary Jarrel: "Cayenne and GMT Date and Time"

    Hi there,

    Yeah, looks like CAY-796 [1] to me. I could swear we fixed it, but
    looks like we did not. Ok, adding that to a TODO list...

    In the meantime try to check the "Use Shared Cache" checkbox in the
    Modeler - this would hopefully take care of the problem (and probably
    improve your performance if you could live with a bit of object
    caching in your app).

    Andrus

    [1] https://issues.apache.org/cayenne/browse/CAY-796

    On Sep 12, 2007, at 6:18 PM, Emilian Bold wrote:

    > Hy,
    >
    > I keep getting this exception:
    >
    > java.lang.NullPointerException
    > at org.apache.cayenne.access.DataRowStore.sendUpdateNotification
    > (DataRowStore.java:673)
    > at org.apache.cayenne.access.DataRowStore.processSnapshotChanges
    > (DataRowStore.java:538)
    > at
    > org.apache.cayenne.access.DataRowStore.snapshotsUpdatedForObjects
    > (DataRowStore.java:278)
    > at org.apache.cayenne.access.ObjectResolver.objectsFromDataRows
    > (ObjectResolver.java:121)
    > at
    > org.apache.cayenne.access.ObjectResolver.synchronizedObjectsFromDataRo
    > ws(ObjectResolver.java:97)
    > at
    > org.apache.cayenne.access.DataDomainQueryAction.interceptObjectConvers
    > ion(DataDomainQueryAction.java:319)
    > at org.apache.cayenne.access.DataDomainQueryAction.execute
    > (DataDomainQueryAction.java:116)
    > at org.apache.cayenne.access.DataDomain.onQuery(DataDomain.java:730)
    > at org.apache.cayenne.util.ObjectContextQueryAction.runQuery
    > (ObjectContextQueryAction.java:217)
    > at org.apache.cayenne.access.DataContextQueryAction.execute
    > (DataContextQueryAction.java:54)
    > at org.apache.cayenne.access.DataContext.onQuery(DataContext.java:
    > 1387)
    > at org.apache.cayenne.access.DataContext.performQuery
    > (DataContext.java:1376)
    > ...
    >
    > on Cayenne 2.0.2.
    >
    > This seems to happen always for the same Local EJB, while other Local
    > EJBs that use Cayenne in the same way seem to work. From a previous
    > email, it seems this has something to do with the serialization of the
    > objectStore.
    >
    > What can I do to get rid of this ?
    >
    > Thanks,
    > Emilian Bold
    >
    >
    >
    >
    > --
    > Emilian Bold
    > +40 740235562
    > http://www.emilianbold.ro
    >
    > Java and NetBeans Platform-loving consulting services from
    > Timisoara, Romania.
    >

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