Andrey Razumovsky commented on CAY-1077:
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Seems that I rested too long :-) Cannot understand some of this issues:
1. You don't like that there are always more columns than selected values? If so, we can add new path component (new column) by double-click on the list entry.
2. Automatical selection of first component in the path can only occur when you have root selected, but no path. When you use sync button, both the root and path are selected. So I can see what can break behind the user here
3. I'd argue about that. Imagine a tree-like table A, which has to-one rel toParent and reverse childrenArray. Flattened toParent -> childrenArray can return siblings of the object. Other obvious example can be use of toParent -> toParent, which returns "grandfather" of the object
> 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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