选择这个选项的效果与使用常规视图一样：在为用户显示内容之前，服务器不得不检查所有10,000个文档。

Selecting this option has the same result as using a flat view: the server has to check all 10,000 documents before displaying anything to the user.

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当您选择树形结构中的某个元素时，它会激活属性视图并显示所选项目的详细信息。

When you select an element in the tree view, the properties view is activated and shows the details of what you have selected.

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一种解决方案是使用Show single category选项(参见图6)来创建嵌入视图，并且让用户从其拥有访问权限的类别列表中选择要显示的类别。

One solution is to create an embedded view using the Show single category option (see figure 6) and to have the user choose a category to display from a list of categories to which he has access.

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