On May 31, 2010, at 7:48 AM, Mike Kienenberger wrote:
I didn't completely understand the question, so I'm not sure if this
answers it.
I guess the question was whether we want this in Cayenne mapping in
some form:
@Inheritance(strategy = InheritanceType.JOINED)
or guess the strategy from other mapping clues (the later is our
current approach). It was more of a discussion item on what are the
benefits of either approach.
@DiscriminatorColumn(name="object_type")
Actually my plan is to use OUTER joins in Cayenne SELECT queries, so
entity type will be determined from the presence of the non-null
joined ID column in the result set and explicit discriminator ("entity
qualifier expression" in Cayenne terms) won't be needed.
Andrus
