/** {@inheritDoc} */
@Override
public void txEnd(GridCacheTx tx, boolean commit) throws GridException {
init();
Session ses = tx.removeMeta(ATTR_SES);
if (ses != null) {
Transaction hTx = ses.getTransaction();
if (hTx != null) {
try {
if (commit) {
ses.flush();
hTx.commit();
} else hTx.rollback();
if (log.isDebugEnabled())
log.debug("Transaction ended [xid=" + tx.xid() + ", commit=" + commit + ']');
} catch (HibernateException e) {
throw new GridException(
"Failed to end transaction [xid=" + tx.xid() + ", commit=" + commit + ']', e);
} finally {
ses.close();
}
}
}
}
/**
* Gets Hibernate session.
*
* @param tx Cache transaction.
* @return Session.
*/
Session session(@Nullable GridCacheTx tx) {
Session ses;
if (tx != null) {
ses = tx.meta(ATTR_SES);
if (ses == null) {
ses = sesFactory.openSession();
ses.beginTransaction();
// Store session in transaction metadata, so it can be accessed
// for other operations on the same transaction.
tx.addMeta(ATTR_SES, ses);
if (log.isDebugEnabled())
log.debug("Hibernate session open [ses=" + ses + ", tx=" + tx.xid() + "]");
}
} else {
ses = sesFactory.openSession();
ses.beginTransaction();
}
return ses;
}
/** {@inheritDoc} */
@Override
public Integer call() throws Exception {
GridCacheTx tx = CU.txStartInternal(ctx, latchView, PESSIMISTIC, REPEATABLE_READ);
try {
GridCacheCountDownLatchValue latchVal = latchView.get(key);
if (latchVal == null) {
if (log.isDebugEnabled())
log.debug("Failed to find count down latch with given name: " + name);
assert cnt == 0;
return cnt;
}
int retVal;
if (val > 0) {
retVal = latchVal.get() - val;
if (retVal < 0) retVal = 0;
} else retVal = 0;
latchVal.set(retVal);
latchView.put(key, latchVal);
tx.commit();
return retVal;
} finally {
tx.end();
}
}