Kevin Menard commented on CAY-1077:
-----------------------------------
I've been away from the issue a bit myself and needed a refresher.
1. I guess you could boil it down to that. I think it's more of an issue of there always being multiple columns, even for what should be a toOne relationship. I think a double-click could work, but we'd want to make sure that's somehow intuitive. I'm not sure it is with a columnar selector, unfortunately.
2. Indeed, the sync button does work well. My issue was more with the ease at which a user can break a sync'd connection. Maybe I'm trying to be too protective, but being able to convert a toOne to a toMany is simplistic to the point of being hazardous, IMHO.
3. I should have clarified a bit more. Of course toMany could have interesting relationships and detecting a static cycle in that case would be impossible. But, for toOnes with bi-directional relationships, we can detect cycles fairly easily. We should not allow such to be mapped.
> ObjRelationship Mapping Dialog Improvements
> -------------------------------------------
>
> Key: CAY-1077
> URL: https://issues.apache.org/cayenne/browse/CAY-1077
> Project: Cayenne
> Issue Type: Improvement
> Components: CayenneModeler GUI
> Affects Versions: 3.0
> Reporter: Andrus Adamchik
> Assignee: Kevin Menard
> Fix For: 3.0
>
> Attachments: patch-CAY-1077.txt
>
>
> [This is a GSoC 2008 task]
> The biggest complaint about the ObjRelationship mapping dialog is that it is often unclear how it operates, especially to the new users. I.e. empty list of DbRelationships is displayed as a white area, not giving any hints on what needs to be done to map a relationship. So that's confusing. Same thing when you add 1 path component, there is no hint that you can chain more path components for the flattened relationship.
> At the minimum we may just add some hint text ("Select next DbRelationship" in grey over the next available dropdown), but ideally we should implement a path browser, similar to how the SelectQuery prefetch and ordering browsers operate (and similar to how OS X Finder does).
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