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https://issues.apache.org/jira/browse/OPENJPA-2429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13784072#comment-13784072
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Rick Curtis commented on OPENJPA-2429:
--------------------------------------
Can you put together a small unit test that exposes this problem? If that is
too onerous, posting snippets of the Entities involved would help recreate the
problem.
> NPE was thrown out when a @OrderBy modified column is being persisted.
> ----------------------------------------------------------------------
>
> Key: OPENJPA-2429
> URL: https://issues.apache.org/jira/browse/OPENJPA-2429
> Project: OpenJPA
> Issue Type: Bug
> Components: datacache
> Affects Versions: 2.2.1
> Environment: Windows 7
> WebSphere 8.5
> Reporter: Kymair Wu
>
> Following NPE was thrown out when a @OrderBy modified column is being
> persisted.
> {quote}
> Caused by: java.lang.NullPointerException
> at
> org.apache.openjpa.datacache.DataCachePCDataImpl.clearInverseRelationCache(DataCachePCDataImpl.java:179)
> at
> org.apache.openjpa.datacache.DataCachePCDataImpl.storeField(DataCachePCDataImpl.java:159)
> {quote}
> I notice that getOrderDeclaration() of FieldMetaData will return null when
> both _orders and _orderDec are null, which cause the NPE.
> The only place _orders will be set after class initialization seems to be
> getOrders()? But getOrders() is not involved for all the FieldMetaData of
> "fields[i].getInverseMetaDatas()"
> I'm not sure whether this is a OpenJPA issue but whether this NPE should be
> handled internally?
> Google returns a potential case but no more information found. See
> https://issues.apache.org/jira/browse/OPENJPA-2096?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
> and
> http://mail-archives.apache.org/mod_mbox/openjpa-users/201006.mbox/%3c4c1be781.9000...@cyberspaceroad.com%3E
> Thanks!
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