Thanks to Spring 3.0, this turned out to be too easy. Heres what I have done to my app :
First, I created a datasource called akappdbds in Weblogic and I have set the target as the admin server so that it gets available to all webapps hosted in the server.
Now, inside my dispatcher-servlet.xml, namely my spring context file, I have used the <jee:jndi-lookup/> tag as :
<jee:jndi-lookup id="akappdbdatasource" jndi-name="akappdbds" expected-type="javax.sql.DataSource"/>
This creates a bean with the id and it can be used as the datasource for the project. The parameter jndi-name given in this tag must match the jndi name of the weblogic datasource. Once this was done, I have injected the akappdbdatasource bean into my dao class as :
<bean name="loginDaoImpl" class="com.akapp.dao.impl.LoginDaoImpl">
<property name="dataSource" ref="akappdbdatasource" />
</bean>
Once this is done, I can use the datasource in my dao to access the database and do whatever I need with the database objects.
Next is the EntityManager that I will be working on. Lets see how long it takes for me to master that one 
