NPE in BaseClassDescriptor

From: Tobias Schoessler (tobias.schoessle..mail.com)
Date: Wed Sep 08 2010 - 11:07:17 UTC

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    I am running cayenne 1.2.4

    I wonder if there is an easy explanation for this NPE.

    I am deploying as a webapp with cayenne.jar and the mapping DataObjects and
    mapping files packaged in a separate jar.

    This setup usually works. On some context on production I see this NPE .

    Caused by: java.lang.NullPointerException
            at
    org.objectstyle.cayenne.property.BaseClassDescriptor.getDeclaredProperty(BaseClassDescriptor.java:173)

            at
    org.objectstyle.cayenne.property.BaseClassDescriptor.getProperty(BaseClassDescriptor.java:163)

            at
    org.objectstyle.cayenne.util.ObjectContextQueryAction.interceptRelationshipQuery(ObjectContextQueryAction.java:214)

            at
    org.objectstyle.cayenne.access.DataContextQueryAction.execute(DataContextQueryAction.java:88)

            at
    org.objectstyle.cayenne.access.DataContext.onQuery(DataContext.java:1423)
            at
    org.objectstyle.cayenne.access.DataContext.performQuery(DataContext.java:1412)

            at
    org.objectstyle.cayenne.access.DataContextFaults$ToOneFault.doResolveFault(DataContextFaults.java:144)

            at
    org.objectstyle.cayenne.access.DataContextFaults$ToOneFault.resolveFault(DataContextFaults.java:117)

            at
    org.objectstyle.cayenne.CayenneDataObject.readProperty(CayenneDataObject.java:245)

            at
    org.unodc.applications.cms.cayenne.auto._WebPage.getToWebPageState(_WebPage.java:457)

    any idea? Is cayenne not finding its cayenne.xml inside the jar?

    thanks a million.

    Tobias

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