Benson So created OPENJPA-2539:
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Summary: JPQL interpret wrongly for inner join table (without
mapped relation)
Key: OPENJPA-2539
URL: https://issues.apache.org/jira/browse/OPENJPA-2539
Project: OpenJPA
Issue Type: Bug
Components: jpa
Affects Versions: 2.1.0
Environment: WebSphere v8.0
Reporter: Benson So
I found the following issue after a few months of production of my client.
I write a java batch job to process some account data for my client.
And I found out that the JPQL interpret wrong randomly and it is not always
having the same result for the same of data and code.
JPA statement:
SELECT B
FROM EntityA_PO A, EntityB_PO B
WHERE A.deletingDateTime IS NULL and A.statusCode= :app and A.someId in (:ids)
and B.deletingDateTime IS NULL and B.statusCode= :app2 and A.headerId =
B.headerId
ORDER BY B.someId
translated to unexpected SQL:
SELECT t1.HEADER_ID, t1.SOME_ID
FROM EntityB t0 JOIN EntityB t1 ON (1 = 1)
WHERE (t0.DELETING_DATE_TIME IS NULL AND t0.STATUS_CODE = ? AND t0.SOME_ID IN
(?)
AND t1.DELETING_DATE_TIME IS NULL AND t1.STATUS_CODE = ? AND t1.HEADER_ID =
t0.HEADER_ID)
ORDER BY t1.SOME_ID ASC
the correct translated SQL:
SELECT t1.HEADER_ID, t1.SOME_ID
FROM EntityA t0 JOIN EntityB t1 ON (1 = 1)
WHERE (t0.DELETING_DATE_TIME IS NULL AND t0.STATUS_CODE = ? AND t0.SOME_ID IN
(?)
AND t1.DELETING_DATE_TIME IS NULL AND t1.STATUS_CODE = ? AND t1.HEADER_ID =
t0.HEADER_ID)
ORDER BY t1.SOME_ID ASC
Detail:
The two EntityA_PO and EntityB_PO do not have any mapped relation. They are
joined by a column called headerId in where clause only.
The problem and correct generated native SQL is different by one is to=Entity A
, and other is to=Entity B.
I don't know why the wrong one joining Entity B itself without any Entity A
involvement. This situation seems to be existed randomly. I can't catch the
pattern of it.
If there is any fix or workaround for this case, please let me know. Thanks
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