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https://issues.apache.org/jira/browse/CAY-2853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17844385#comment-17844385
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Jurgen Doll commented on CAY-2853:
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Submitted [PR|https://github.com/apache/cayenne/pull/614/files]
> Incorrect deletion of entities from flattened attributes
> --------------------------------------------------------
>
> Key: CAY-2853
> URL: https://issues.apache.org/jira/browse/CAY-2853
> Project: Cayenne
> Issue Type: Bug
> Components: Core Library
> Affects Versions: 4.2, 5.0-M2
> Reporter: Jurgen Doll
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When deleting an ObjEntity with flattened attributes Cayenne deletes the
> related DB attribute's row as well.
>
> So if we have for example an ObjEntity "FlatPainting" with flattened
> attribute "galleryName". If we then delete a "FlatPainting" then the
> associated gallery will also be deleted, leaving all other paintings at that
> gallery without a valid Gallery link.
>
> Furthermore if we add to our "FlatPainting" a "gallery" relationship
> attribute with delete rule Deny, the gallery is still deleted.
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