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https://issues.apache.org/jira/browse/OPENJPA-2949?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18123475#comment-18123475
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ASF subversion and git services commented on OPENJPA-2949:
----------------------------------------------------------

Commit db8aec7d561620cad87fea8f7ad369d992cfcea9 in openjpa's branch 
refs/heads/master from Richard Zowalla
[ https://gitbox.apache.org/repos/asf?p=openjpa.git;h=db8aec7d5 ]

[OPENJPA-2949] Document the ID()/VERSION() comparison operators and in-memory 
set operations (#192)

> ID()/VERSION() limited to equality against parameters
> -----------------------------------------------------
>
>                 Key: OPENJPA-2949
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2949
>             Project: OpenJPA
>          Issue Type: Sub-task
>          Components: jpa
>    Affects Versions: 4.2.0
>            Reporter: Maxim Solodovnik
>            Assignee: Romain Manni-Bucau
>            Priority: Major
>             Fix For: 4.2.0
>
>
> Discussion link: 
> [https://github.com/apache/openjpa/pull/144#discussion_r3682999176]
> *(medium)* {{entity_id_or_version_comp()}} only allows {{ID( x )/VERSION( x 
> )}} compared with {{=/<>}} against an input parameter. Spec-legal forms like 
> {{{}ID(e) = 5{}}}, {{VERSION(e) >= :v}} or {{ID(a) = ID(b)}} do not parse - 
> intentional first step, or should these functions be reachable from the 
> general comparison/arithmetic productions?



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