Andrus Adamchik created CAY-2739:
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Summary: Mapping Proposal: replace "toDepPk" with "fk"
Key: CAY-2739
URL: https://issues.apache.org/jira/browse/CAY-2739
Project: Cayenne
Issue Type: Improvement
Reporter: Andrus Adamchik
"toDepPk" is a DbRelationship property that hints that Cayenne should take the
value of the join on the source side and propagate it to the target side. It
only applies to PK-to-PK relationships.
It is an artificial construct with nothing equivalent on the DB side, so it may
be confusing as to what it means. Moreover it is limited to PK-PK
relationships, meaning that we can't propagate values if the source is not a PK.
I suggest that we replace "toDepPk" with a complementary "fk" property that is
both well-understood and equally applies to every relationship. "toDepPk" will
be a special case of "fk=false" relationship. In most cases it can be
auto-calculated (if one side is a PK, and another one is not), so hopefully it
will not create extra mapping work.
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