Pavel, this already exists as child bean definitions. Take a look at
section 3.5 in the docs below,
http://www.springframework.org/docs/reference/beans.html
on 'Child bean definitions' (for some reason the direct link to that
subsection doesn't work). Note that this code is significantly enhanced
in CVS over v1.0.2; to get the behaviour described in the manual above
you need CVS code.
Regards,
Colin
Pavel Tcholakov wrote:
>Hi,
>
>This may have been discussed before, I did a Google search but nothing came
>up.
>
>I was reading something on spring-user yesterday when it struck me, why do
>we need to describe each and every property of each and every bean when we
>have inheritance. Sure, this may not always be the best choice, but it would
>make life easier in many cases and I would think it's relatively easy to
>implement.
>
>Possible scenario:
>
>A hierarchy of DAO objects, all extending a base DAO, which in turn extends,
>say, HibernateDaoSupport. Then instead of having in applicationContext.xml:
>
><bean id="xyzDAO" class="com.mycompany.product.dao.hibernate.XyzDAO">
> <property name="sessionFactory">
> <ref local="mySessionFactory">
> </property>
> <property name="somethingElse">
> <value>xyz</value>
> </property>
></bean>
>
>for each and every DAO, you could just write something like:
>
><bean superclass="com.mycompany.product.dao.hibernate.GenericDao">
> <property name="sessionFactory">
> <ref local="mySessionFactory">
> </property>
></bean>
>
>And then you could still have specific properties for those beans that
>require it, like:
>
><bean id="xyzDAO" class="com.mycompany.product.dao.hibernate.XyzDAO">
> <property name="somethingElse">
> <value>xyz</value>
> </property>
></bean>
>
>Yay or nay? Seems to me it's a better way of dealing with generic properties
>across the board and would make refactoring/plugging new implementations
>easier? One could even take this a step further and implement property
>setting based on regex on the bean ids or classnames much like the pointcut
>definitions in the AOP module.
>
>Best regards,
>Pavel
>
>
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