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https://issues.apache.org/jira/browse/CAY-1802?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dzmitry Kazimirchyk updated CAY-1802:
-------------------------------------
Attachment: CAY-1802-test.patch
Attaching unit test demonstrating the issue.
> Records present in multiple prefetch paths are not merged correctly into
> final result
> -------------------------------------------------------------------------------------
>
> Key: CAY-1802
> URL: https://issues.apache.org/jira/browse/CAY-1802
> Project: Cayenne
> Issue Type: Bug
> Components: Core Library
> Affects Versions: 3.1B2
> Reporter: Dzmitry Kazimirchyk
> Attachments: CAY-1802-test.patch
>
>
> If same records getting prefetched through multiple prefetch paths, the final
> result will content corrupted records with relationships set to null. Example:
> Paintings are present in one prefetch path:
> SelectQuery q = new SelectQuery(Artist.class);
> q.addPrefetch(Artist.PAINTING_ARRAY_PROPERTY);
> q.addPrefetch(Artist.PAINTING_ARRAY_PROPERTY + "." +
> Painting.TO_PAINTING_INFO_PROPERTY);
> artist.getPaintingArray().get(0).getPaintingInfo() will contain correct non
> null PaintingInfo record.
> But if paintings are present in multiple prefetch paths:
> SelectQuery q = new SelectQuery(Artist.class);
> q.addPrefetch(Artist.PAINTING_ARRAY_PROPERTY);
> q.addPrefetch(Artist.PAINTING_ARRAY_PROPERTY + "." +
> Painting.TO_PAINTING_INFO_PROPERTY);
> q.addPrefetch(Artist.ARTIST_EXHIBIT_ARRAY_PROPERTY);
> q.addPrefetch(Artist.ARTIST_EXHIBIT_ARRAY_PROPERTY + "." +
> ArtistExhibit.TO_EXHIBIT_PROPERTY);
> q.addPrefetch(Artist.ARTIST_EXHIBIT_ARRAY_PROPERTY + "." +
> ArtistExhibit.TO_EXHIBIT_PROPERTY + "." + Exhibit.TO_GALLERY_PROPERTY);
> q.addPrefetch(Artist.ARTIST_EXHIBIT_ARRAY_PROPERTY + "." +
> ArtistExhibit.TO_EXHIBIT_PROPERTY + "." + Exhibit.TO_GALLERY_PROPERTY + "." +
> Gallery.PAINTING_ARRAY_PROPERTY);
> artist.getPaintingArray().get(0).getPaintingInfo() will return null even if
> there is PaintingInfo associated with painting.
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