* @return true if synched with transaction, false otherwise
*/
boolean syncWithManagedTransaction(BrokerImpl broker, boolean begin) {
Transaction trans;
try {
ManagedRuntime mr = broker.getManagedRuntime();
TransactionManager tm = mr.getTransactionManager();
trans = tm.getTransaction();
if (trans != null
&& (trans.getStatus() == Status.STATUS_NO_TRANSACTION
|| trans.getStatus() == Status.STATUS_UNKNOWN))
trans = null;
if (trans == null && begin) {
tm.begin();
trans = tm.getTransaction();
} else if (trans == null)
return false;
// synch broker and trans
trans.registerSynchronization(broker);
// we don't need to synchronize on brokers or guard against multiple
// threads using the same trans since one JTA transaction can never
// be active on multiple concurrent threads.
Object txKey = mr.getTransactionKey();
Collection brokers = (Collection) _transactional.get(txKey);
if (brokers == null) {
brokers = new ArrayList(2);
_transactional.put(txKey, brokers);