Proper way to inject parent class dependencies with Spring annotations

Question

I have following code -

Dao.java

@Component
public class Dao extends NamedParameterJdbcDaoSupport {

}

dbContext.xml

 <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
            destroy-method="close">
            <property name="driverClassName" value="${db.driver}" />
            <property name="url" value="${db.jdbc.url}" />
            <property name="username" value="${db.user}" />
            <property name="password" value="${db.password}" />
        </bean>

applicationContext.xml

<context:component-scan base-package="com.kshitiz" />

The problem is that NamedParameterJdbcDaoSupport needs data source in order to work. Since this is a property of the super class and not my own class the only way I could think of to make it work is -

@Component
public class Dao extends NamedParameterJdbcDaoSupport {
    @Autowired
    public void setDataSource(DataSource dataSource) {
        super.setDataSource(dataSource);
    }
}

This is pretty ugly. Can I specify that I want to autowire all the properties of my bean? Something like -

@Component(default-autowire="byType")
public class Dao extends NamedParameterJdbcDaoSupport {

}

Is this possible in Spring? Alternatively what is the most elegant way to inject super class dependencies?

Edit: I already know this can be done using XML which I am presently using. I'd like to know the best that can be done using annotations only.

Answer 1

Not necessarily the answer you were looking for, but I would do this with an intermediary super class.

public abstract class AbstractDao extends NamedParameterJdbcDaoSupport {
    @Autowired
    public void setDataSource(DataSource dataSource) {
        super.setDataSource(dataSource);
    }
}

@Component
public class Dao extends AbstractDao {
}