[OPENJPA-496] columns fill wrong entity fields when names same in joined tables

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Invalid
• Affects Version/s: 1.1.0
• Environment: Linux 2.6, JDK 1.5.0_12, MySQL 4 or H2
• Assignee: Unassigned
• Reporter: Adam Hardy
• Created: 17/Jan/08 23:09
• Updated: 09/Mar/10 18:35
• Resolved: 27/Jan/09 13:26

Description

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>

Issue Links

• is related to: OPENJPA-444 Unnecessary updates during flush operation.