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https://issues.apache.org/jira/browse/OPENJPA-862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12664876#action_12664876
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Arne Limburg commented on OPENJPA-862:
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When analyzing the executed sql of the test-case, I recognized that OpenJPA
uses the wrong Pet-ID during selection of the visits for the second pet. It
uses the ID of the first pet instead.
>From this observation I guess this is a caching problem. As a new
>entity-manager is used for every query (doing this within one entity-manager
>seems to work fine) the caching problem must be somewhere in the
>entity-manager-factory.
> Wrong id-parameter used for prepared statement when fetching a collection
> -------------------------------------------------------------------------
>
> Key: OPENJPA-862
> URL: https://issues.apache.org/jira/browse/OPENJPA-862
> Project: OpenJPA
> Issue Type: Bug
> Components: datacache
> Affects Versions: 1.2.0
> Reporter: Arne Limburg
> Attachments: OPENJPA-862.zip
>
>
> When fetching a collection that is a property of an entity that was fetched
> through a collection, too, under some (reproducable) circumstances the
> collection is empty instead of filled with the correct entities.
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