2008-07-11

让Spring架构减化事务配置(2)

(2) 使用TransactionProxyFactoryBean

    <!—定义业务对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService.target"
          class="com.prs.application.ehld.sample.biz.service.impl.SampleServiceImpl">
        <property name="userInfoDAO"
           ref="com.prs.application.ehld.sample.integration.dao.userInfoDAO">
         </property>
    </bean>



 <!—定义业务对象的事务代理对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService" 
          class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
          abstract="true">
        <property name="transactionManager">
            <ref bean="transactionManager"/>
        </property>
    <property name="target"
          ref="com.prs.application.ehld.sample.biz.service.sampleService.target" />
        <property name="transactionAttributes">
            <props>
                <prop key="insert*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="save*">PROPAGATION_REQUIRED</prop>
                <prop key="find*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="get*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="*">PROPAGATION_SUPPORTS,readOnly</prop>
            </props>
        </property>
    </bean>

 

 使用TransactionProxyFactoryBean需要为每一个代理对象都去定义自己的事务属性。

 

3) 使用TransactionProxyFactoryBean及abstract属性来简化配置
    这种方工也是目前使用得最多的一种声明式事务配置方法

<!--事务控制代理抽象定义 -->
<bean id="baseTransactionProxy" 
        class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"
        abstract="true">
        <property name="transactionManager">
            <ref bean="transactionManager"/>
        </property>
        <property name="transactionAttributes">
            <props>
                <prop key="insert*">PROPAGATION_REQUIRED</prop>
                <prop key="update*">PROPAGATION_REQUIRED</prop>
                <prop key="save*">PROPAGATION_REQUIRED</prop>
                <prop key="find*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="get*">PROPAGATION_SUPPORTS,readOnly</prop>
                <prop key="*">PROPAGATION_SUPPORTS,readOnly</prop>
            </props>
        </property>
    </bean>



    <!—定义业务对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService.target"
          class="com.prs.application.ehld.sample.biz.service.impl.SampleServiceImpl">
        <property name="userInfoDAO"
           ref="com.prs.application.ehld.sample.integration.dao.userInfoDAO">
         </property>
    </bean>



<!—定义业务对象的事务代理对象-->
<bean id="com.prs.application.ehld.sample.biz.service.sampleService" 
              parent="baseTransactionProxy">
        <property name="target"
           ref="com.prs.application.ehld.sample.biz.service.sampleService.target">
         </property>
    </bean>

 

 

    使用abstract属性，可以让代理对象可以共享一个定义好的事务属性，使配置简化。

 

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