Configuring Different Transactional Semantics for Different Beans

Consider the scenario where you have a number of service layer objects, and you want to apply a totally different transactional configuration to each of them. You can do so by defining distinct <aop:advisor/> elements with differing pointcut and advice-ref attribute values.

As a point of comparison, first assume that all of your service layer classes are defined in a root x.y.service package. To make all beans that are instances of classes defined in that package (or in subpackages) and that have names ending in Service have the default transactional configuration, you could write the following:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:aop="http://www.springframework.org/schema/aop"
  xmlns:tx="http://www.springframework.org/schema/tx"
  xsi:schemaLocation="
    http://www.springframework.org/schema/beans
    https://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/tx
    https://www.springframework.org/schema/tx/spring-tx.xsd
    http://www.springframework.org/schema/aop
    https://www.springframework.org/schema/aop/spring-aop.xsd">

  <aop:config>

    <aop:pointcut id="serviceOperation"
        expression="execution(* x.y.service..*Service.*(..))"/>

    <aop:advisor pointcut-ref="serviceOperation" advice-ref="txAdvice"/>

  </aop:config>

  <!-- these two beans will be transactional... -->
  <bean id="fooService" class="x.y.service.DefaultFooService"/>
  <bean id="barService" class="x.y.service.extras.SimpleBarService"/>

  <!-- ... and these two beans won't -->
  <bean id="anotherService" class="org.xyz.SomeService"/> <!-- (not in the right package) -->
  <bean id="barManager" class="x.y.service.SimpleBarManager"/> <!-- (doesn't end in 'Service') -->

  <tx:advice id="txAdvice">
    <tx:attributes>
      <tx:method name="get*" read-only="true"/>
      <tx:method name="*"/>
    </tx:attributes>
  </tx:advice>

  <!-- other transaction infrastructure beans such as a TransactionManager omitted... -->

</beans>

The following example shows how to configure two distinct beans with totally different transactional settings:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns:aop="http://www.springframework.org/schema/aop"
  xmlns:tx="http://www.springframework.org/schema/tx"
  xsi:schemaLocation="
    http://www.springframework.org/schema/beans
    https://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/tx
    https://www.springframework.org/schema/tx/spring-tx.xsd
    http://www.springframework.org/schema/aop
    https://www.springframework.org/schema/aop/spring-aop.xsd">

  <aop:config>

    <aop:pointcut id="defaultServiceOperation"
        expression="execution(* x.y.service.*Service.*(..))"/>

    <aop:pointcut id="noTxServiceOperation"
        expression="execution(* x.y.service.ddl.DefaultDdlManager.*(..))"/>

    <aop:advisor pointcut-ref="defaultServiceOperation" advice-ref="defaultTxAdvice"/>

    <aop:advisor pointcut-ref="noTxServiceOperation" advice-ref="noTxAdvice"/>

  </aop:config>

  <!-- this bean will be transactional (see the 'defaultServiceOperation' pointcut) -->
  <bean id="fooService" class="x.y.service.DefaultFooService"/>

  <!-- this bean will also be transactional, but with totally different transactional settings -->
  <bean id="anotherFooService" class="x.y.service.ddl.DefaultDdlManager"/>

  <tx:advice id="defaultTxAdvice">
    <tx:attributes>
      <tx:method name="get*" read-only="true"/>
      <tx:method name="*"/>
    </tx:attributes>
  </tx:advice>

  <tx:advice id="noTxAdvice">
    <tx:attributes>
      <tx:method name="*" propagation="NEVER"/>
    </tx:attributes>
  </tx:advice>

  <!-- other transaction infrastructure beans such as a TransactionManager omitted... -->

</beans>