java - 如果父对象不是单例，那么子对象也是单例吗？

Question

我有一个不是单例的 Dao，从他扩展的其他对象，是否是单例？代码示例

<bean id="dao" class="parentDao"
        scope="prototype">

</bean>

<bean id="childrenDao"
        class="some.dao.extends.parentDao"
        parent="parentDao">
</bean>

childrenDao 是单例吗？

Answer 1

更新:通过测试验证，作用域也是从父bean继承的，并且可以被子bean覆盖。所以在这种情况下，childrendDao 将是一个原型(prototype)。

引用文档中是这么说的: http://static.springsource.org/spring/docs/3.1.x/spring-framework-reference/html/beans.html#beans-child-bean-definitions

A child bean definition inherits constructor argument values, property values, and method overrides from the parent, with the option to add new values. Any initialization method, destroy method, and/or static factory method settings that you specify will override the corresponding parent settings.

The remaining settings are always taken from the child definition: depends on, autowire mode, dependency check, singleton, scope, lazy init.