Spring-TX-Propagation-事务传播行为

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原创 2022-08-11 14:43:30 448 阅读 AI 写同款· GEO 优化 ›

【Spring】事务和事务的传播机制将一组操作封装在一起执行，要么全部成功，要么全部失败。阅读详情

Spring-Tx

传播行为

propagation	提交	异常	捕获	后异常
required (rollbackOnly)	do nothing / commit	setRollbackOnly / rollback	setRollbackOnly / rollback
required_new (isNewTransaction)	commit / commit	rollback / rollback	rollback / commit	commit / rollback
nested (savePoint)	releaseSavepoint / commit	rollbackToSavepoint & releaseSavepoint / rollback	rollbackToSavepoint & releaseSavePoint / commit

REQUIRED

如果当前没有事务，就新建一个事务，如果已经存在一个事务中，加入到这个事务中。
本质上是同一个事务
提交：什么也不做
异常传递：rollbackOnly = true
异常捕获：rollbackOnly = true

REQUIRED_NEW

新建事务，如果当前存在事务，把当前事务挂起。
提交：isNewTx = true 提交
异常传递：rollback / rollback
异常捕获：rollback / commit
异常后捕：commit / rollback
A、B不可操作同一条记录，因为处于不同事务中，会产生死锁。

NESTED

如果当前存在事务，则在嵌套事务内执行。如果当前没有事务，则执行与PROPAGATION_REQUIRED类似的操作。
提交：releaseSavepoint / commit 
异常传递：rollbackToSavepoint & releaseSavepoint / rollback
异常捕获：rollbackToSavepoint & releaseSavepoint / commit
A、B可操作同一条记录，因为处于同一个事务中。

SUPPORTS

支持当前事务，如果当前没有事务，就以非事务方式执行。
提交：
异常捕获：
异常传递：

MANDATORY

使用当前的事务，如果当前没有事务，就抛出异常。
提交：
异常捕获：
异常传递：

NOT_SUPPORTS

以非事务方式执行操作，如果当前存在事务，就把当前事务挂起。
提交：
异常捕获：
异常传递：

NEVER

以非事务方式执行，如果当前存在事务，则抛出异常。
提交：
异常捕获：
异常传递：

核心代码-AOP

    // Standard transaction demarcation with getTransaction and commit/rollback calls.
    TransactionInfo txInfo = createTransactionIfNecessary(tm,txAttr,joinpointIdentification);
    Object retVal = null;
    try {
        // This is an around advice: Invoke the next interceptor in the chain.
        // This will normally result in a target object being invoked.
        retVal=invocation.proceedWithInvocation();
    } catch(Throwable ex){
        // target invocation exception
        completeTransactionAfterThrowing(txInfo,ex);
        throw ex;
    } finally {
        cleanupTransactionInfo(txInfo);
    }
    commitTransactionAfterReturning(txInfo);
    return retVal;

回滚事务

    if (status.hasSavepoint()) {
        if (status.isDebug()) {
            logger.debug("Rolling back transaction to savepoint");
        }
        status.rollbackToHeldSavepoint();
    }
    else if (status.isNewTransaction()) {
        if (status.isDebug()) {
            logger.debug("Initiating transaction rollback");
        }
        doRollback(status);
    }
    else if (status.hasTransaction()) {
        if (status.isLocalRollbackOnly() || isGlobalRollbackOnParticipationFailure()) {
            if (status.isDebug()) {
                logger.debug("Participating transaction failed - marking existing transaction as rollback-only");
            }
            doSetRollbackOnly(status);
        }
        else {
            if (status.isDebug()) {
                logger.debug("Participating transaction failed - letting transaction originator decide on rollback");
            }
        }
    }

提交事务-01

    DefaultTransactionStatus defStatus = (DefaultTransactionStatus) status;
    if (defStatus.isLocalRollbackOnly()) {
        if (defStatus.isDebug()) {
            logger.debug("Transactional code has requested rollback");
        }
        processRollback(defStatus);
        return;
    }
    if (!shouldCommitOnGlobalRollbackOnly() && defStatus.isGlobalRollbackOnly()) {
        if (defStatus.isDebug()) {
            logger.debug("Global transaction is marked as rollback-only but transactional code requested commit");
        }
        processRollback(defStatus);
        // Throw UnexpectedRollbackException only at outermost transaction boundary
        // or if explicitly asked to.
        if (status.isNewTransaction() || isFailEarlyOnGlobalRollbackOnly()) {
            throw new UnexpectedRollbackException("Transaction rolled back because it has been marked as rollback-only");
        }
        return;
    }
    
    processCommit(defStatus);

提交事务-02

    if (status.isNewTransaction() || isFailEarlyOnGlobalRollbackOnly()) {
        globalRollbackOnly = status.isGlobalRollbackOnly();
    }
    if (status.hasSavepoint()) {
        if (status.isDebug()) {
            logger.debug("Releasing transaction savepoint");
        }
        status.releaseHeldSavepoint();
    }
    else if (status.isNewTransaction()) {
        if (status.isDebug()) {
            logger.debug("Initiating transaction commit");
        }
        doCommit(status);
    }

测试代码

package center.leon.springtx;

import center.leon.springtx.service.TxAService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.aop.framework.autoproxy.InfrastructureAdvisorAutoProxyCreator;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.transaction.annotation.AnnotationTransactionAttributeSource;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import org.springframework.transaction.event.TransactionalEventListenerFactory;
import org.springframework.transaction.interceptor.BeanFactoryTransactionAttributeSourceAdvisor;
import org.springframework.transaction.interceptor.TransactionInterceptor;

@Slf4j
@EnableTransactionManagement
@SpringBootApplication
public class SpringTxApplication {

    public static void main(String[] args) {
        ConfigurableApplicationContext run = SpringApplication.run(SpringTxApplication.class, args);

        // 基础增强自动代理创建器
        final InfrastructureAdvisorAutoProxyCreator infrastructureAdvisorAutoProxyCreator = run.getBean(InfrastructureAdvisorAutoProxyCreator.class);
        assert null != infrastructureAdvisorAutoProxyCreator;
        // TransactionalEventListener ： https://blog.youkuaiyun.com/qq_41378597/article/details/105748703
        final TransactionalEventListenerFactory transactionalEventListenerFactory = run.getBean(TransactionalEventListenerFactory.class);
        assert null != transactionalEventListenerFactory;
        //
        final AnnotationTransactionAttributeSource annotationTransactionAttributeSource = run.getBean(AnnotationTransactionAttributeSource.class);
        assert null != annotationTransactionAttributeSource;
        // 事务AOP增强
        final TransactionInterceptor transactionInterceptor = run.getBean(TransactionInterceptor.class);
        assert null != transactionInterceptor;
        //
        final BeanFactoryTransactionAttributeSourceAdvisor beanFactoryTransactionAttributeSourceAdvisor = run.getBean(BeanFactoryTransactionAttributeSourceAdvisor.class);
        assert null != beanFactoryTransactionAttributeSourceAdvisor;

        final TxAService txAService = run.getBean(TxAService.class);
        txAService.truncateTable();
        /**
         *
         */
        txAService.required_commit_NoTx_commit();
        /**
         *
         */
        try {
            txAService.required_commit_NoTx_Ex();
        } catch (Exception e) {
        }
        /**
         * commit / commit
         */
        txAService.required_commit_Required_commit();
        /**
         * setRollbackOnly / rollback
         */
        try {
            txAService.required_commit_Required_Ex();
        } catch (Exception e) {
        }
        /**
         * setRollbackOnly / rollback
         */
        try {
            txAService.required_commit_Required_Ex_Caught();
        } catch (Exception e) {
        }
        /**
         * commit / commit
         */
        txAService.required_commit_Required_New_Commit();
        /**
         * rollback / commit
         */
        try {
            txAService.required_commit_Required_New_Ex();
        } catch (Exception e) {
        }
        /**
         * rollback / commit
         */
        txAService.required_commit_Required_New_Ex_Caught();
        /**
         * commit / rollback
         */
        try {
            txAService.required_Ex_Required_New_commit();
        } catch (Exception e) {
        }
        /**
         * releaseSavePoint / commit
         */
        txAService.required_commit_Required_Nested_Commit();
        /**
         * rollbackToSavePoint & releaseSavePoint / rollback
         */
        try {
            txAService.required_commit_Required_Nested_Ex();
        } catch (Exception e) {
        }
        /**
         * rollbackToSavePoint & releaseSavePoint / commit
         */
        txAService.required_commit_Required_Nested_Ex_Caught();
        /**
         * THIS 以下
         */
        txAService.required_commit_or_ex_catch_This_Any_propagation_commit_or_ex_or_caught_is_invalid();
        /**
         * Spring 以下
         */
        txAService.required_commit_or_ex_catch_Spring_Any_propagation_commit_or_ex_or_caught_invalid();
        System.out.println("天地英雄气，千秋尚凛然");
    }

}

ServiceA Interface

package center.leon.springtx.service;

/**
 * Description:
 *
 * @author Leon
 * @since 2022/1/11 1:57 下午
 */
public interface TxAService {

    void truncateTable();

    void required_commit_NoTx_commit();

    void required_commit_NoTx_Ex();

    void required_commit_Required_commit();

    void required_commit_Required_Ex();

    void required_commit_Required_Ex_Caught();

    void required_commit_Required_New_Commit();

    void required_commit_Required_New_Ex();

    void required_commit_Required_New_Ex_Caught();

    void required_Ex_Required_New_commit();

    void required_commit_Required_Nested_Commit();

    void required_commit_Required_Nested_Ex();

    void required_commit_Required_Nested_Ex_Caught();

    // this 以下是
    void required_commit_or_ex_catch_This_Any_propagation_commit_or_ex_or_caught_is_invalid();

    void required_commit_or_ex_catch_This_Any_propagation_commit_or_ex_or_caught_is_invalid_this(String name);

    // Spring 以下是
    void required_commit_or_ex_catch_Spring_Any_propagation_commit_or_ex_or_caught_invalid();

    void required_commit_or_ex_catch_Spring_Any_propagation_commit_or_ex_or_caught_invalid_Spring(String name);
}

ServiceAImpl Class

package center.leon.springtx.service.impl;

import center.leon.springtx.dao.MonkeyDao;
import center.leon.springtx.mapper.MonkeyMapper;
import center.leon.springtx.service.TxAService;
import center.leon.springtx.service.TxBService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

/**
 * Description:
 *
 * @author Leon
 * @since 2022/1/11 1:57 下午
 */
@Service
@Slf4j
public class TxAServiceImpl implements TxAService {

    @Autowired
    private TxBService txBService;
    @Autowired
    private MonkeyDao monkeyDao;
    @Autowired
    private MonkeyMapper monkeyMapper;

    @Autowired
    private TxAService txAService;

    @Override
    public void truncateTable() {
        monkeyMapper.truncateTable();
    }

    /**
     * A 开启事务 ts(isNewTx = true)
     * B TransactionInterceptor 不拦截，无事务增强
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_NoTx_commit() {
        monkeyDao.insert("required_commit_NoTx_commit_A");
        txBService.required_commit_NoTx_commit("required_commit_NoTx_commit_B");
    }

    /**
     * A 开启事务 ts(isNewTx = true)
     * B TransactionInterceptor 不拦截，无事务增强
     * B 抛异常，捕获异常，向上传递。
     * 在 A catch 处理程序中 根据 rollbackFor 配置决定是否回滚或提交
     * 回滚：A ts(isNewTx = true) 回滚。继续抛出 异常。
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_NoTx_Ex() {
        monkeyDao.insert("required_commit_NoTx_Ex_A");
        txBService.required_commit_NoTx_Ex("required_commit_NoTx_Ex_B");
    }

    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false)
     * B 提交事务 ts(isNewTx = false)，不 commit
     * A 开启事务 ts(isNewTx = true)，commit
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_commit() {
        monkeyDao.insert("required_commit_Required_commit_A");
        txBService.required_commit_Required_commit("required_commit_Required_commit_B");
    }


    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false)
     * B 抛异常
     * 在 B catch 处理程序中 根据 rollbackFor 配置决定是否回滚或提交
     * 回滚：B ts(isNewTx = false, ConnectionHolder::rollbackOnly = true), 继续抛出异常
     * 提交：
     * 在 A catch 处理程序中 根据 rollbackFor 配置决定是否回滚或提交
     * 回滚：A ts(isNewTx = true, ConnectionHolder::rollbackOnly = true), 执行回滚逻辑。继续抛出异常
     * 提交：
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_Ex() {
        monkeyDao.insert("required_commit_Required_Ex_A");
        txBService.required_commit_Required_Ex("required_commit_Required_Ex_B");
    }

    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false)
     * B 抛异常
     * 在 B catch 处理程序中 根据 rollbackFor 配置决定是否回滚或提交
     * 回滚：B ts(isNewTx = false, ConnectionHolder::rollbackOnly = true), 继续抛出异常
     * 提交：
     * 在 A catch 处理程序中 根据 rollbackFor 配置决定是否回滚或提交
     * 回滚：A ts(isNewTx = true, ConnectionHolder::rollbackOnly = true), 执行回滚逻辑。继续抛出异常
     * 提交：
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_Ex_Caught() {
        monkeyDao.insert("required_commit_Required_Ex_Caught_A");
        try {
            txBService.required_commit_Required_Ex_Caught("required_commit_Required_Ex_Caught_B");
        } catch (Exception e) {
            log.info("required_commit_Required_Ex_Caught_B. error : {}", e.getMessage(), e);
        }
    }


    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false)(线程挂起资源时，清除connect。重新获取ts(isNewTx = true)，开启事务，重新获取connect）
     * 提交：B con.commit();
     * 提交：A con.commit();
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_New_Commit() {
        monkeyDao.insert("required_commit_Required_New_Commit_A");
        txBService.required_commit_Required_New_Commit("required_commit_Required_New_Commit_B");
    }


    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false)(线程挂起资源时，清除connect。重新获取ts(isNewTx = true)，开启事务，重新获取connect）
     * 回滚：B con.rollback(); 继续向上传递异常
     * 回滚：A con.rollback(); 继续向上传递异常
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_New_Ex() {
        monkeyDao.insert("required_commit_Required_New_Ex_A");
        txBService.required_commit_Required_New_Ex("required_commit_Required_New_Ex_B");
    }


    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false)(线程挂起资源时，清除connect。重新获取ts(isNewTx = true)，开启事务，重新获取connect）
     * 提交：B con.commit();
     * 回滚：A con.rollback(); 继续向上传递异常
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_New_Ex_Caught() {
        monkeyDao.insert("required_commit_Required_New_Ex_Caught_A");
        try {
            txBService.required_commit_Required_New_Ex_Caught("required_commit_Required_New_Ex_Caught_B");
        } catch (Exception e) {
            log.info("required_commit_Required_New_Ex_Caught_B : {}", e.getMessage(), e);
        }
    }


    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false)(线程挂起资源时，清除connect。重新获取ts(isNewTx = true)，开启事务，重新获取connect）
     * 提交：B con.commit();
     * 回滚：A con.rollback(); 继续向上传递异常
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_Ex_Required_New_commit() {
        monkeyDao.insert("required_Ex_Required_New_commit_A");
        txBService.required_Ex_Required_New_commit("required_Ex_Required_New_commit_B");
        int i = 0 / 0;
    }


    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false, crateAndHoledSavePoint())
     * 提交：B release savePoint
     * 提交：A con.commit();
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_Nested_Commit() {
        monkeyDao.insert("required_commit_Required_Nested_Commit_A");
        txBService.required_commit_Required_Nested_Commit("required_commit_Required_Nested_Commit_B");
    }

    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false, crateAndHeldSavePoint())
     * 回滚：B rollbackTo/release savePoint 继续向上传递异常
     * 回滚：A con.rollback();
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_Nested_Ex() {
        monkeyDao.insert("required_commit_Required_Nested_Ex_A");
        txBService.required_commit_Required_Nested_Ex("required_commit_Required_Nested_Ex_B");
    }

    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * B 开启事务 ts(isNewTx = false, crateAndHeldSavePoint())
     * 回滚：B rollbackTo/release savePoint (ConnectionHolder:rollbackOnly still is false) 继续向上传递异常
     * A catch B ex
     * 提交：A con.rollback();
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_Nested_Ex_Caught() {
        monkeyDao.insert("required_commit_Required_Nested_Ex_Caught_A");
        try {
            txBService.required_commit_Required_Nested_Ex_Caught("required_commit_Required_Nested_Ex_Caught_B");
        } catch (Exception e) {
            log.info("required_commit_Required_Nested_Ex_Caught_B. error : {}", e.getMessage(), e);
        }
    }

    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * this.方法名调用是对象内部方法调用，不会通过Spring代理，不会被TransactionInterceptor事务拦截器增强，也就是事务不会起作用。
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_or_ex_catch_This_Any_propagation_commit_or_ex_or_caught_is_invalid() {
        monkeyDao.insert("required_commit_or_ex_catch_This_Any_propagation_commit_or_ex_or_caught_is_invalid_A");
        this.required_commit_or_ex_catch_This_Any_propagation_commit_or_ex_or_caught_is_invalid_this("required_commit_or_ex_catch_This_Any_propagation_commit_or_ex_or_caught_is_invalid_this");
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.NEVER)
    public void required_commit_or_ex_catch_This_Any_propagation_commit_or_ex_or_caught_is_invalid_this(String name) {
        monkeyDao.insert(name);
    }

    /**
     * A 开启事务 ts(isNewTx = true)(线程不带connect）
     * Spring 开启事务 ts(isNewTx = false)
     */
    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_or_ex_catch_Spring_Any_propagation_commit_or_ex_or_caught_invalid() {
        monkeyDao.insert("required_commit_or_ex_catch_Spring_Any_propagation_commit_or_ex_or_caught_invalid_A");
        txAService.required_commit_or_ex_catch_Spring_Any_propagation_commit_or_ex_or_caught_invalid_Spring("required_commit_or_ex_catch_Spring_Any_propagation_commit_or_ex_or_caught_invalid_Spring");
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.NEVER)
    public void required_commit_or_ex_catch_Spring_Any_propagation_commit_or_ex_or_caught_invalid_Spring(String name) {
        monkeyDao.insert(name);
    }

}

ServiceB Interface

package center.leon.springtx.service;

/**
 * Description:
 *
 * @author Leon
 * @since 2022/1/11 1:57 下午
 */
public interface TxBService {

    void required_commit_NoTx_commit(String name);

    void required_commit_NoTx_Ex(String name);

    void required_commit_Required_commit(String name);

    void required_commit_Required_Ex(String name);

    void required_commit_Required_Ex_Caught(String name);

    void required_commit_Required_New_Commit(String name);

    void required_commit_Required_New_Ex(String name);

    void required_commit_Required_New_Ex_Caught(String name);

    void required_Ex_Required_New_commit(String name);

    void required_commit_Required_Nested_Commit(String name);

    void required_commit_Required_Nested_Ex(String name);

    void required_commit_Required_Nested_Ex_Caught(String name);
       
}

ServiceBImpl Class

package center.leon.springtx.service.impl;

import center.leon.springtx.dao.MonkeyDao;
import center.leon.springtx.service.TxBService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

/**
 * Description:
 *
 * @author Leon
 * @since 2022/1/11 1:57 下午
 */
@Service
public class TxBServiceImpl implements TxBService {

    @Autowired
    private MonkeyDao monkeyDao;

    @Override
    public void required_commit_NoTx_commit(String name) {
        monkeyDao.insert(name);
    }

    @Override
    public void required_commit_NoTx_Ex(String name) {
        monkeyDao.insert(name);
        int i = 0 / 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_commit(String name) {
        monkeyDao.insert(name);
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_Ex(String name) {
        monkeyDao.insert(name);
        int i = 0 / 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRED)
    public void required_commit_Required_Ex_Caught(String name) {
        monkeyDao.insert(name);
        int i = 0 / 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRES_NEW)
    public void required_commit_Required_New_Commit(String name) {
        monkeyDao.insert(name);
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRES_NEW)
    public void required_commit_Required_New_Ex(String name) {
        monkeyDao.insert(name);
        int i = 0 / 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRES_NEW)
    public void required_commit_Required_New_Ex_Caught(String name) {
        monkeyDao.insert(name);
        int i = 0 / 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.REQUIRES_NEW)
    public void required_Ex_Required_New_commit(String name) {
        monkeyDao.insert(name);
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.NESTED)
    public void required_commit_Required_Nested_Commit(String name) {
        monkeyDao.insert(name);
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.NESTED)
    public void required_commit_Required_Nested_Ex(String name) {
        monkeyDao.insert(name);
        int i = 0 / 0;
    }

    @Override
    @Transactional(rollbackFor = Exception.class, propagation = Propagation.NESTED)
    public void required_commit_Required_Nested_Ex_Caught(String name) {
        monkeyDao.insert(name);
        int i = 0 / 0;
    }
}