ejb3/src/main/java/org/jboss/as/ejb3/tx/CMTTxInterceptor.java
protected void endTransaction(final Transaction tx) {
        ContextTransactionManager tm = ContextTransactionManager.getInstance();
        try {
            if (! tx.equals(tm.getTransaction())) {
                throw EjbLogger.ROOT_LOGGER.wrongTxOnThread(tx, tm.getTransaction());
            }
            final int txStatus = tx.getStatus();
            if (txStatus == Status.STATUS_ACTIVE) {
                // Commit tx
                // This will happen if
                // a) everything goes well
                // b) app. exception was thrown
                tm.commit();
            } else if (txStatus == Status.STATUS_MARKED_ROLLBACK) {
                tm.rollback();
            } else if (txStatus == Status.STATUS_ROLLEDBACK || txStatus == Status.STATUS_ROLLING_BACK) {
                // handle reaper canceled (rolled back) tx case (see WFLY-1346)
                // clear current tx state and throw RollbackException (EJBTransactionRolledbackException)
                tm.rollback();
                throw EjbLogger.ROOT_LOGGER.transactionAlreadyRolledBack(tx);
            } else if (txStatus == Status.STATUS_UNKNOWN) {
                // STATUS_UNKNOWN isn't expected to be reached here but if it does, we need to clear current thread tx.
                // It is possible that calling tm.commit() could succeed but we call tm.rollback, since this is an unexpected
                // tx state that are are handling.
                tm.rollback();
                // if the tm.rollback doesn't fail, we throw an EJBException to reflect the unexpected tx state.
                throw EjbLogger.ROOT_LOGGER.transactionInUnexpectedState(tx, statusAsString(txStatus));
            } else {
                // logically, all of the following (unexpected) tx states are handled here:
                //  Status.STATUS_PREPARED
                //  Status.STATUS_PREPARING
                //  Status.STATUS_COMMITTING
                //  Status.STATUS_NO_TRANSACTION
                //  Status.STATUS_COMMITTED
                tm.suspend();                       // clear current tx state and throw EJBException
                throw EjbLogger.ROOT_LOGGER.transactionInUnexpectedState(tx, statusAsString(txStatus));
            }
        } catch (RollbackException e) {
            throw new EJBTransactionRolledbackException(e.toString(), e);
        } catch (HeuristicMixedException | SystemException | HeuristicRollbackException e) {
            throw new EJBException(e);
        }
    }
protected void endTransaction(final Transaction tx) {
        ContextTransactionManager tm = ContextTransactionManager.getInstance();
        try {
            if (! tx.equals(tm.getTransaction())) {
                throw EjbLogger.ROOT_LOGGER.wrongTxOnThread(tx, tm.getTransaction());
            }
            final int txStatus = tx.getStatus();
            if (txStatus == Status.STATUS_ACTIVE) {
                // Commit tx
                // This will happen if
                // a) everything goes well
                // b) app. exception was thrown
                tm.commit();
            } else if (txStatus == Status.STATUS_MARKED_ROLLBACK) {
                tm.rollback();
            } else if (txStatus == Status.STATUS_ROLLEDBACK || txStatus == Status.STATUS_ROLLING_BACK) {
                // handle reaper canceled (rolled back) tx case (see WFLY-1346)
                // clear current tx state and throw RollbackException (EJBTransactionRolledbackException)
                tm.rollback();
                throw EjbLogger.ROOT_LOGGER.transactionAlreadyRolledBack(tx);
            } else if (txStatus == Status.STATUS_UNKNOWN) {
                // STATUS_UNKNOWN isn't expected to be reached here but if it does, we need to clear current thread tx.
                // It is possible that calling tm.commit() could succeed but we call tm.rollback, since this is an unexpected
                // tx state that are are handling.
                tm.rollback();
                // if the tm.rollback doesn't fail, we throw an EJBException to reflect the unexpected tx state.
                throw EjbLogger.ROOT_LOGGER.transactionInUnexpectedState(tx, statusAsString(txStatus));
            } else {
                // logically, all of the following (unexpected) tx states are handled here:
                //  Status.STATUS_PREPARED
                //  Status.STATUS_PREPARING
                //  Status.STATUS_COMMITTING
                //  Status.STATUS_NO_TRANSACTION
                //  Status.STATUS_COMMITTED
                tm.suspend();                       // clear current tx state and throw EJBException
                throw EjbLogger.ROOT_LOGGER.transactionInUnexpectedState(tx, statusAsString(txStatus));
            }
        } catch (RollbackException e) {
            throw new EJBTransactionRolledbackException(e.toString(), e);
        } catch (HeuristicMixedException | SystemException | HeuristicRollbackException e) {
            throw new EJBException(e);
        }
    }
The <code>endTransaction</code> method ends a transaction and
translates any exceptions into
TransactionRolledBack[Local]Exception or SystemException.

@param tx a <code>Transaction</code> value