Re: Null pointer exceptions and database null

From: Mike Kienenberger (mkienen..mail.com)
Date: Fri Aug 04 2006 - 09:31:46 EDT

  • Next message: Gentry, Michael \(Contractor\): "RE: Null pointer exceptions and database null"

    On 8/4/06, Øyvind Harboe <oyvind.harbo..ylin.com> wrote:
    > I spoke too soon. How do I in readProperty() know the type of the null
    > I'll be translating to an empty string or Integer 0? (I expect that
    > not to be super hard as Cayenne has this knowledge somewhere in its
    > structures)

    In general, you would....

    Look up the ObjEntity for the the current DataObject, find the
    ObjAttribute (or ObjRelationship) for the property name, and then look
    at the java type for that OA or OR.

    Note that you can speed this up by changing the generated class
    templates to automatically hardcode this information into each getter.

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