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From "Adam Hardy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (OPENJPA-496) columns fill wrong entity fields when names same in joined tables
Date Wed, 05 Nov 2008 12:11:44 GMT

    [ https://issues.apache.org/jira/browse/OPENJPA-496?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12645203#action_12645203
] 

Adam Hardy commented on OPENJPA-496:
------------------------------------

Thanks for the info, Milosz. That enabled me to get it working (while watching Obama give
his acceptance speech). 

So the unit tests which I wrote and attached above fail, but after adapting them to work with
some of the OpenJPA unit test base classes, they no longer fail. 

I don't have time today to check out what the issue is, but I shall do soon, and I'll report
back here, hopefully with a solution so I can mark this issue closed. 

> columns fill wrong entity fields when names same in joined tables
> -----------------------------------------------------------------
>
>                 Key: OPENJPA-496
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-496
>             Project: OpenJPA
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>         Environment: Linux 2.6, JDK 1.5.0_12, MySQL 4 or H2
>            Reporter: Adam Hardy
>            Priority: Blocker
>         Attachments: bug.zip, issue496.jar
>
>
> OpenJPA is mixing up the mapping of columns from joined tables, where the two
> tables have fields with the same name used on their respective entities. I've
> got some basic unit tests aimed at verifying the problem. Is there something
> wrong with my mappings or is this a bug? I can upload the unit test project.
> Here's the info. The TITLE fields get mixed up. I have this query:
> select species from Species species
> I have this output:
> SELECT t0.ID, t1.ID, t1.OWNER_ID, t1.TITLE, t0.IUCN_STATUS_ID, t0.OWNER_ID,
> t0.TITLE FROM PUBLIC.SPECIES t0 LEFT OUTER JOIN PUBLIC.GENUS t1 ON t0.GENUS_ID =
> t1.ID
> These are the mappings:
>    <entity class="org.permacode.atomictest.domain.Genus">
>      <table name="GENUS" />
>      <attributes>
>        <id name="id">
>           <column name="ID" />
>           <generated-value strategy="TABLE" generator="genusKeySequence" />
>         </id>
>         <basic name="title">
>           <column name="TITLE" />
>         </basic>
>         <basic name="ownerId">
>           <column name="OWNER_ID" />
>         </basic>
>         <one-to-many name="species" mapped-by="genus">
>           <cascade>
>             <cascade-persist />
>             <cascade-merge />
>             <cascade-refresh />
>           </cascade>
>         </one-to-many>
>       </attributes>
>     </entity>
>     <entity class="org.permacode.atomictest.domain.Species">
>       <table name="SPECIES" />
>       <attributes>
>         <id name="id">
>           <column name="ID" />
>           <generated-value strategy="TABLE" generator="speciesKeySequence" />
>         </id>
>         <basic name="title">
>           <column name="TITLE" />
>         </basic>
>         <basic name="iucnStatus">
>           <column name="IUCN_STATUS_ID" />
>           <enumerated>ORDINAL</enumerated>
>         </basic>
>         <basic name="ownerId">
>           <column name="OWNER_ID" />
>         </basic>
>         <many-to-one name="genus">
>           <join-column name="GENUS_ID" />
>         </many-to-one>
>       </attributes>
>     </entity>

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