How to use Spring IOC to set a property in the Base class

[shankara98]

public interface BaseDAO
{
  public void setDataSource(DataSource dataSource);
}

public class BaseDAOImpl implements BaseDAO
{
  public DataSource dataSource;

  public void setDataSource(DataSource dataSource)
  {
    this.dataSource = dataSource;
  }
}

public class UserDAOImpl extends BaseDAOImpl implements UserDAO
{
  ...
}

public class CustomerDAOImpl extends BaseDAOImpl implements CustomerDAO
{
  ...
}

Now within my dataAccessContext-jdbc.xml

<!--  JNDI lookup of datasouce -->
<bean id="dataSource"                                                                         class="org.springframework.jndi.JndiObjectFactoryBean">
  <property name="jndiName">
    <value>jdbc/jhs</value>
  </property>
</bean>

<bean id="userDAO" class="com.xyz.dao.impl.UserDAOImpl">
  <property name="dataSource">
    <ref local="dataSource"/>
  </property>
</bean>

<bean id="customerDAO" class="com.xyz.dao.impl.CustomerDAOImpl">
  <property name="dataSource">
    <ref local="dataSource"/>
  </property>
</bean>

Does anyone know a way to set the dataSource property for the BaseDAOImpl once, and not repeat setting the dataSource in each of the sub classes that derive from BaseDAOImpl?

Thanks for your help.

[Rod Johnson]

The use of "template" bean definitions (specifying parent) should work. Alternative you could use autowiring, which would avoid the need to refer to the datasource explicity in each case.