*/
public synchronized void beginTransaction() throws TransactionInProgressException, TransactionAbortedException
{
if (isInTransaction())
{
throw new TransactionInProgressException("PersistenceBroker is already in transaction");
}
fireBrokerEvent(BEFORE_BEGIN_EVENT);
setInTransaction(true);
this.connectionManager.localBegin();
fireBrokerEvent(AFTER_BEGIN_EVENT);