Spring + Abstract DAO Factory pattern

[smaye81]

Hello,

How would I go about implementing the abstract DAO factory pattern using Spring's dependency injection. I have my beans set up as:

	<!--Dao (Data Access Object) for application. -->
	<bean id="jobDAO"
		class="com.myapp.dao.JobDAO">
		<property name="sessionFactory">
			<ref local="sessionFactory" />
		</property>
	</bean>

	<!--Manager for Job Functionality-->
	<bean id="jobManager" class="com.myapp.service.JobBO">
		<property name="jobDAO">
			<ref local="jobDAO" />
		</property>
	</bean>

Where the JobDAO is an abstract DAO. However, how do I inject a specific implementation of say JobDAOOracleImpl into my JobBO instead? Would I create beans like this instead?

	<!--Oracle Job DAO -->
	<bean id="jobDAOOracle"
		class="com.myapp.dao.JobDAOOracleImpl">
		<property name="sessionFactory">
			<ref local="sessionFactory" />
		</property>
	</bean>

	<!--MySQL Job DAO -->
	<bean id="jobDAOMySQL"
		class="com.myapp.dao.JobDAOMySQLImpl">
		<property name="sessionFactory">
			<ref local="sessionFactory" />
		</property>
	</bean>

	<!--Manager for Job Functionality-->
	<bean id="jobManager" class="com.myapp.service.JobBO">
		<property name="jobDAOOracle">
			<ref local="jobDAOOracle" />
		</property>
	</bean>

And explicitly set which DAO implementation I want in applicationContext? What is the best practice for this?

[jinoinfo]

Any solution to the above issue.??. I am also facing the similar issue. Could somebody help to resolve this issue