the prepared query cache doesn't currently work correclty with 'SELECT IN'
statements
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Key: OPENJPA-1845
URL: https://issues.apache.org/jira/browse/OPENJPA-1845
Project: OpenJPA
Issue Type: Bug
Components: jdbc
Affects Versions: 2.0.1
Reporter: Mark Struberg
Priority: Critical
I have a problem with upgrading from OpenJPA-2.0.0 to 2.0.1.
One of my services executes the following query (this is the 'id' I get in
PreparedQueryCacheImpl#get(String id) ):
SELECT distinct e FROM Employment em, Person e WHERE em.employeeId =
e.employeeId and em.orgUnitCode = :orgUnitCode AND em.employmentPosition in
(:employmentPositions) AND em.start <= :startBefore AND em.end >= :endAfter
ORDER BY e.familyName ASC
Somehow when I execute my service a few times with different
employmentPositions params (ArrayList<String>) I still get the 'old' cached
param values!
I tried to disable this behaviour in my persistence.xml with
<property name="openjpa.QueryCache" value="false"/>
but this didn't work.
Maybe this was a side effect of the ORDER BY which made this query work in
2.0.0 (caching of queries with ORDER BY got only fixed after 2.0.0), so I'd
like to write a unit test for it.
As Jeremy pointed out, this can get fixed by setting <property
name="openjpa.jdbc.QuerySQLCache" value="false"/> in my persistence.xml.
Nontheless this is a problematic bug because it is very hard to find and lead
to finding wrong data in your application (would be less problematic if it
would 'just' throw an Exception).
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