Query using foreign objects

From: Dave Merrin (dmerri..pasystems.co.uk)
Date: Mon Feb 06 2006 - 04:04:05 EST

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    Hi,

    I have tried mapping an ObjEntity to to DBEntity to allow me to use primary
    keys in an expression. This works for the expression but creates a new
    problem. My primary key is an identity hence it is generated by the database
    (and marked as isGenerated=true in the mapping file). Unfortunately mapping
    the ObjEntity to the DBEntity makes Cayenne think I have to set primary key
    when creating a new record in the database.

    Is this a bug?

    As an alternative I tried using the db: prefix but this didn't seem to work
    across relationships.

    Is there any way to create expressions using primary keys?

    Cheers,

    Dave

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