/**
* Rollback a transaction
*
* @exception SystemException Thrown if an error occurs
*/
public void rollbackTransaction() throws SystemException {
Long key = Long.valueOf(Thread.currentThread().getId());
TransactionImpl tx = txs.get(key);
if (tx != null) {
try {
tx.rollback();
} catch (Throwable t) {
SystemException se = new SystemException("Error during rollback");
se.initCause(t);
throw se;
} finally {
txs.remove(key);
}
} else {
throw new IllegalStateException("No transaction to rollback");
}
}
