Re: Problem with 3.0M3 (Null pointer): More info

From: Andrus Adamchik (andru..bjectstyle.org)
Date: Tue Feb 05 2008 - 06:35:21 EST

  • Next message: Alexander Lamb (dev): "Re: Problem with 3.0M3 (Null pointer): More info"

    Aha... That must be it:

    https://issues.apache.org/cayenne/browse/CAY-921

    Andrus

    On Feb 5, 2008, at 1:21 PM, Alexander Lamb (dev) wrote:

    > More info:
    >
    > What happened is that we have class hierarchies in our models. With
    > M2, it works. With M3, it doesn't. What is also curious is that the
    > interface in the Modeler of M3 does not allow anymore to have a DB
    > Entity inherit from another DB Entity ?? I guess that is the problem
    > since reverting to an M2 version of our models and running the exact
    > same code with M2 works.
    >
    > Alex
    >
    > Le 5 févr. 08 à 12:05, Alexander Lamb (dev) a écrit :
    >
    >> Ok, I will try.
    >>
    >> Maybe the model but I maybe did something stupid: I opened the
    >> models with the M3 modeler then saved them. Still the crash. Then
    >> reverted to M2 (without changing the models). Again a crash....
    >> which seems to tell us it is not M3.
    >>
    >> But: are the model formats compatible between M2 and M3 ? In other
    >> words, can I continue to work with M3 modeler whatever version M2
    >> or M3 of Cayenne I am using?
    >>
    >> Thanks,
    >>
    >> Alex
    >>
    >> Le 5 févr. 08 à 10:13, Andrus Adamchik a écrit :
    >>
    >>>
    >>> On Feb 5, 2008, at 11:02 AM, Alexander Lamb (dev) wrote:
    >>>
    >>>> Caused by: java.lang.NullPointerException
    >>>> at
    >>>> org
    >>>> .apache
    >>>> .cayenne
    >>>> .map.AshwoodEntitySorter.fillInMetadata(AshwoodEntitySorter.java:
    >>>> 265)
    >>>> at
    >>>> org
    >>>> .apache
    >>>> .cayenne
    >>>> .map.AshwoodEntitySorter._indexSorter(AshwoodEntitySorter.java:98)
    >>>> at
    >>>> org
    >>>> .apache
    >>>> .cayenne
    >>>> .map.AshwoodEntitySorter.sortDbEntities(AshwoodEntitySorter.java:
    >>>> 137)
    >>>
    >>> Did anything change in your mapping since the Cayenne update? The
    >>> easiest way debug the NPE is to put a breakpoint at the line above
    >>> and see why "join.getTarget()" returns null. I suspect a mapping
    >>> problem, but don't fully exclude a possibility of a Cayenne bug.
    >>>
    >>> Andrus
    >>>
    >>
    >
    >



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