How to use Declarative transaction management in Spring ?

1. Define transaction manager beans in Spring XML

<bean id="jotm" 

  class="org.springframework.transaction.jta.JotmFactoryBean" />

<bean id="txnManager" 

  class="org.springframework.transaction.jta.JtaTransactionManager">

   <property name="userTransaction">

       <ref local="jotm" />

   </property>

</bean>

Here, we defined a bean named "transactionManager" as Spring transaction manager bean.

2. Define bean on which transaction manager needs to be applied

<bean id="myBean" class="com.genius.MyBean" scope = "prototype">

  <!-- dependency injections here -->

</bean>

It is a normal bean with its dependencies.

Java file MyBean is containing 2 methods : "add" and "delete".

3. Define transaction-proxy bean

<bean id="myTxnBean"  

 class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">

  <property name="transactionManager" ref="txnManager" />

  <property name="target" ref="myBean" />

  <property name="transactionAttributes">

    <props>

        <prop key="add">

  PROPAGATION_REQUIRED, -java.lang.Exception,-com.shaan.MyException

        </prop>

        <prop key="delete">

  PROPAGATION_REQUIRED, -java.lang.Exception,-com.shaan.MyException

        </prop>

    </props>

  </property>

</bean>

Here, a duplicate bean of myBean (named "myTxnBean") has created with transaction management enabled with it.

In properies, we have provided : 

  1. Transaction manager bean, which is "txnManager".

  2. Target bean on which we have to apply transaction manager. (Here, target is "myBean")

  3. Transaction attributes : Attributes have key and value.

        a. key : Method name on which transaction manager needs to be applied. 

                     ("add" and "delete" methods)

        b. value : Transaction attribute and exception hierarchy. (PROPAGATION_REQUIRED)

Now, We can use both the beans - myBean (without transaction management) and myTxnBean (with transaction management)