Albert Lee created OPENJPA-2449:
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Summary: refresh(PESSIMISTIC_WRITE) generates seperate SQL for the
lock
Key: OPENJPA-2449
URL: https://issues.apache.org/jira/browse/OPENJPA-2449
Project: OpenJPA
Issue Type: Improvement
Components: jdbc, kernel
Affects Versions: 2.1.2, 2.2.1.1, 2.2.3, 2.3.1, 2.4.0
Reporter: Albert Lee
Priority: Minor
Simple refresh(PESSIMISTIC_WRITE) generates multiple SQL statements. E.g.
em.refresh(t1, LockModeType.PESSIMISTIC_WRITE);
//SELECT t0.CMLT_FOLDER_CONTEXT_UPDATE_TMS, t0.CRE_TIME FROM T1 t0 WHERE
t0.c1 = ? [params=(String) c1]
//SELECT t0.c1 FROM T1 t0 WHERE t0.c1 = ? FOR READ ONLY WITH RR USE AND
KEEP UPDATE LOCKS [params=(String) c1]
It would be nice if a single SQL is executed to optimize SQL execution and
chances that another thread may compete to lock the same row.
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