How to ?

Hi Friends,


Ihave three methods which has to be called in one transaction from three different DAO's


method 1 addUsers() from UsersDaoImpl
method 2 addUserNgroups() from UserNGroupDaoImpl
method 3 addUserNRole() from UserNRoleDaiImpl

Thje transaction management is as follows for UsersDaoImpl.

Code:

---

        <!-- dceUserDAO config starts here  -->
        <bean id="dceUserDAO"
                class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
                <property name="transactionManager">
                        <ref bean="transactionManager" />
                </property>
                <property name="target">
                        <ref bean="dceUserDAOTarget" />
                </property>
                <property name="transactionAttributes">
                        <!-- define the transaction specs here -->
                        <props>
                                <prop key="addGroupSafe">PROPAGATION_REQUIRED</prop>

                        </props>
                </property>
        </bean>
        <bean id="dceUserDAOTarget"
                class="com.nucleus.dce.dao.hibernate.DceUsersDAOImpl">
                <property name="sessionFactory">
                        <ref bean="sessionFactory" />
                </property>
        </bean>

---

Similarli the other two DAO's are configured seperately

Plz help in this regard

Thanks & Regards,
S.Anand mohan

Normally you want to define your transactions on the Service layer and not on yuor database layer. that way your business method is transactional. So pull-up your transaction demarcation one level from dao to service.

Hi mdenium,

Quote:

---

Originally Posted by mdeinum

Normally you want to define your transactions on the Service layer and not on yuor database layer. that way your business method is transactional. So pull-up your transaction demarcation one level from dao to service.

---

Plz guide me, whether I am in the right track or not..

suppose I have a bean RegistrationController.java of the service layer, in which I am calling the three methods then I have to configure

Code:

---

        <bean id="regController"
                class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
                <property name="transactionManager">
                        <ref bean="transactionManager" />
                </property>
                <property name="target">
                        <ref bean="regControllerTarget" />
                </property>
                <property name="transactionAttributes">
                        <!-- define the transaction specs here -->
                        <props>
                                <prop key="addGroupSafe">PROPAGATION_REQUIRED</prop>

                        </props>
                </property>
        </bean>
        <bean id="regControllerTarget"
                class="MyPackage.RegistrationController">
                <property name="sessionFactory">
                        <ref bean="sessionFactory" />
                </property>
        </bean>

---

Thanks & Regards,
S. Anand Mohan.

Yes that should work, one reservation is that if this controller is a MVC style one you might have problems. Where is the controller called from?
http://www.martinfowler.com/eaaCatal...viceLayer.html
http://www.springframework.org/docs/...decl-explained