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

From: Alexander Lamb (dev) ("Alexander)
Date: Tue Feb 05 2008 - 06:48:50 EST

  • Next message: Andrus Adamchik: "Re: Problem with 3.0M3 (Null pointer): More info"

    Hoho... now I suppose I need to remove the derived DBEntities and
    instead use class inheritance on the object entities side :-)

    I ought to be able to do that without changing the code, only the
    model ?

    Alex

    Le 5 févr. 08 à 12:35, Andrus Adamchik a écrit :

    > 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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