[jira] [Resolved] (OPENJPA-2961) TREAT discriminator filter excludes subclasses of target

["Maxim Solodovnik (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OPENJPA-2961?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Maxim Solodovnik resolved OPENJPA-2961.
---------------------------------------
      Assignee: Richard Zowalla
    Resolution: Fixed

> TREAT discriminator filter excludes subclasses of target
> --------------------------------------------------------
>
>                 Key: OPENJPA-2961
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-2961
>             Project: OpenJPA
>          Issue Type: Sub-task
>          Components: jpa
>    Affects Versions: 4.2.0
>            Reporter: Maxim Solodovnik
>            Assignee: Richard Zowalla
>            Priority: Major
>             Fix For: 4.2.0
>
>
> Discussion thread: https://github.com/apache/openjpa/pull/144#discussion_r3683001854
> **(medium)** `appendTreatDiscriminator` emits `disc = <treated class value>` only. Per JPA, `TREAT(x AS Middle)` must also match subtypes of Middle, so for a 3-level hierarchy this incorrectly filters out instances of Middle's subclasses - it should be an IN over the discriminator values of the treated class and all mapped subclasses. It also only handles `cols[0]` of the discriminator.



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