Every data entry object in ApacheDS needs to use a structural class.

ApacheDS中的每个数据条目对象都需要使用一个结构性类。

youdao

That's why the MessagingPreferences object appears as a child object of Alice's data entry object, which you created earlier in this article.

这是 MessagingPreferences 对象看起来是 Alice 数据条目对象（在本文前面创建的）的子对象的原因。

youdao

Finally, the MessagingPreferences data entry object needs the top class because all object classes extend from the top class, as I previously explained.

最后，MessagingPreferences数据条目对象需要to p类是因为所有对象类都扩展自top类，如我前面解释的。

youdao

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