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Posted to commits@cayenne.apache.org by "Jurgen Doll (JIRA)" <ji...@apache.org> on 2013/08/05 16:20:48 UTC
[jira] [Commented] (CAY-1834) Exception: ToManyList cannot be cast
to DataObject
[ https://issues.apache.org/jira/browse/CAY-1834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13729532#comment-13729532 ]
Jurgen Doll commented on CAY-1834:
----------------------------------
Thanks.
> Exception: ToManyList cannot be cast to DataObject
> --------------------------------------------------
>
> Key: CAY-1834
> URL: https://issues.apache.org/jira/browse/CAY-1834
> Project: Cayenne
> Issue Type: Bug
> Components: Core Library
> Affects Versions: 3.1B2
> Reporter: Jurgen Doll
> Fix For: 3.2M2
>
> Attachments: 0001-xx.patch, VisionsMap.map.xml
>
>
> I have an entity called Activity with a M-N relationship to ActivityResults (No middle or linking table).
> The relationship getResults() returns a MAP<name,ActivityResults>, but the exception also occurs when using a List<ActivityResults>.
> I have found that selecting "To Many" on the dbEntity backing the child class (ActivityResults) produces the exception. While switching "To Many" off removes the exception and commits succesfully.
> If an existing ActivityResult is modified and the Activity is then committed the updates related to the ActivityResults are "successful", but rolled back as an exception is thrown when post-processing Activity:
> java.lang.ClassCastException: org.apache.cayenne.access.ToManyList cannot
> be cast to org.apache.cayenne.DataObject
> at
> org.apache.cayenne.reflect.generic.DataObjectBaseProperty.toDataObject(DataObjectBaseProperty.java:97)
> at
> org.apache.cayenne.reflect.generic.DataObjectBaseProperty.readPropertyDirectly(DataObjectBaseProperty.java:70)
> at
> org.apache.cayenne.reflect.generic.DataObjectToManyProperty.isFault(DataObjectToManyProperty.java:106)
> at
> org.apache.cayenne.access.DataDomainSyncBucket.postprocess(DataDomainSyncBucket.java:257)
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