Why it need in spring application context if integrated with hiberate

Question

Dear all,
in hiberate.xml which has specified the connection data source. I don't understand why the following need to be defined in spring application context.
Or I have made a mistake that data source connection can be defined in hiberate.xml or in spring application context but not both???
<!-- Local DataSource that works in any environment -->
<!-- Note that DriverManagerDataSource does not pool; it is not intended for production -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName"><value>${jdbc.driverClassName}</value></property>
<property name="url"><value>${jdbc.url}</value></property>
<property name="username"><value>${jdbc.username}</value></property>
<property name="password"><value>${jdbc.password}</value></property>
</bean>

Answer 1

Rchiu5hk wrote:
Dear all,
in hiberate.xml which has specified the connection data source. I don't understand why the following need to be defined in spring application context.Your instinct is a good one. "Don't Repeat Yourself" is good advice.
Or I have made a mistake that data source connection can be defined in hiberate.xml or in spring application context but not both??? I agree with you - I would not put it in both.
My preference is to put the data connection information into Spring, not Hibernate, and simply refer to the Hibernate configuration in my session factory:
   <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
      <property name="dataSource" ref="dataSource"/>
      <property name="configLocation" value="classpath:hibernate.cfg.xml"/>
   </bean>That way I can use DriverManager or JNDI for my connection as needed.
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