Spring框架学习[Spring事务处理的实现] - JAVA

onInvoked) { triggerBeforeCompletion(status); } doRollbackOnCommitException(status, err); throw err; } //触发提交之后的回调操作 try { triggerAfterCommit(status); } finally { triggerAfterCompletion(status, TransactionSynchronization.STATUS_COMMITTED); } } //提交完成之后清除事务相关状态 finally { cleanupAfterCompletion(status); } }

public final void commit(TransactionStatus status) throws TransactionException {		//如果事务的执行状态已经结束，则抛出异常		if (status.isCompleted()) {			throw new IllegalTransactionStateException(					"Transaction is already completed - do not call commit or rollback more than once per transaction");		}		DefaultTransactionStatus defStatus = (DefaultTransactionStatus) status;		//如果事务执行状态时回滚		if (defStatus.isLocalRollbackOnly()) {			if (defStatus.isDebug()) {				logger.debug("Transactional code has requested rollback");			}			//处理事务回滚			processRollback(defStatus);			return;		}		//如果事务没有被标记为回滚时提交，且事务状态时全局回滚		if (!shouldCommitOnGlobalRollbackOnly() && defStatus.isGlobalRollbackOnly()) {			if (defStatus.isDebug()) {				logger.debug("Global transaction is marked as rollback-only but transactional code requested commit");			}			//回滚处理			processRollback(defStatus);			//如果事务状态时新事务，或者在全局回滚时失败			if (status.isNewTransaction() || isFailEarlyOnGlobalRollbackOnly()) {				throw new UnexpectedRollbackException(						"Transaction rolled back because it has been marked as rollback-only");			}			return;		}		//处理提交		processCommit(defStatus);	}	//提交处理操作	private void processCommit(DefaultTransactionStatus status) throws TransactionException {		try {			boolean beforeCompletionInvoked = false;			try {				//�<div class="article-middle-ad" style="margin: 30px 0; padding: 20px 0; text-align: center; clear: both;">
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</div>挛裉峤坏淖急腹ぷ鳎芯咛宓氖挛翊砥魍瓿�				prepareForCommit(status);				triggerBeforeCommit(status);				triggerBeforeCompletion(status);				beforeCompletionInvoked = true;				boolean globalRollbackOnly = false;				//如果事务状态是新事务，或者全局回滚失败				if (status.isNewTransaction() || isFailEarlyOnGlobalRollbackOnly()) {					//设置事务全局回滚					globalRollbackOnly = status.isGlobalRollbackOnly();				}				//嵌套事务处理				if (status.hasSavepoint()) {					if (status.isDebug()) {						logger.debug("Releasing transaction savepoint");					}					//释放挂起事务保存点					status.releaseHeldSavepoint();				}				//如果当前事务是新事务				else if (status.isNewTransaction()) {					if (status.isDebug()) {						logger.debug("Initiating transaction commit");					}					//调用具体事务处理器提交事务					doCommit(status);				}				//如果事务被标记为全局回滚				if (globalRollbackOnly) {					throw new UnexpectedRollbackException(							"Transaction silently rolled back because it has been marked as rollback-only");				}			}			//提交过程中产生未预期的回滚异常，则回滚处理			catch (UnexpectedRollbackException ex) {				triggerAfterCompletion(status, TransactionSynchronization.STATUS_ROLLED_BACK);				throw ex;			}			//对提交过程中产生的事务异常处理			catch (TransactionException ex) {				//如果回滚失败，则进行回滚异常处理				if (isRollbackOnCommitFailure()) {					doRollbackOnCommitException(status, ex);				}				else {					triggerAfterCompletion(status, TransactionSynchronization.STATUS_UNKNOWN);				}				throw ex;			}			//对提交过程中产生的异常处理			catch (RuntimeException ex) {				//如果不是在完成前调用的				if (!beforeCompletionInvoked) {					//触发完成前的回调方法					triggerBeforeCompletion(status);				}				//进行回滚异常处理				doRollbackOnComm</span>
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Spring框架学习[Spring事务处理的实现](九)