[jira] Commented: (CAY-1077) ObjRelationship Mapping Dialog Improvements

From: Kevin Menard (JIRA) ("Kevin)
Date: Tue Jul 22 2008 - 20:39:53 EDT

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        [ https://issues.apache.org/cayenne/browse/CAY-1077?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13013#action_13013 ]

    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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