cayenne-lifecycle: support for setting UuidRelationships
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Key: CAY-1547
URL: https://issues.apache.org/jira/browse/CAY-1547
Project: Cayenne
Issue Type: New Feature
Components: Core Library
Affects Versions: 3.1M2
Reporter: Andrus Adamchik
Assignee: Andrus Adamchik
Currently UuidRelationships are read-only. There's no easy way to establish
them in the code, especially if both from and to objects are NEW and PK is not
known. So I am going to add some handler code that does all the backend magic.
(maybe someday we make UuidRelationship a first class citizen in Cayenne and
this will be done differently, for now it belongs in cayenne-lifecycle).
One possible subtask of this task is a PkQuery - a special query to reserve a
primary key for the object before commit. This will simplify the process of
transactional saving UUID "FK" , and seems like a useful utility in general.
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