[CAY-3] One way to-many support

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 1.2 branch
• Fix Version/s: Undefined future
• Component/s: Core Library
• Assignee: Andrus Adamchik
• Reporter: Andrus Adamchik
• Created: 08/Nov/03 02:30
• Updated: 01/Jun/11 15:29
• Resolved: 23/Nov/06 16:50

Description

This is somewhere between a bu and a new feature. Normally Cayenne allows uni-directional mapping of ObjRelationships, as long as underlying DbRelationships
are bi-directional.

Problem:

Uni-directional to-many do not work. Symptom of this is saving a FK column value of the "to-many" side object as NULL, when it was added to the parent object via "parent.addToXyzArray(child)".

This was originally reported by Scott Merritt. His example is attached to the bug report.

[LATER COMMENT BY ARNDT]

we just stumbled over this same problem, went all the way through debugging it and finally found the unit-test that is supposed
to test this.

OneWayOneToManyTst.testReadList()

However, the assertion assertNotNull(a2) is really misleading - it suggests that this is a successfull test, but the result in fact is totallay wrong! (empty list instead of
2 entries)

so I have difficulties qualifiyng this as a "missing feature", and I would like to see at least to have this constraint added
to the datamap-validation to see a warning
about this.

Or , of course, even better - make it work

regards,

Arndt