The rest of this article shows you how to build a lazy-loaded tree grid with QueryReadStore.
本文余下部分将向您介绍如何使用 QueryReadStore 构建一个延迟加载（lazy-loaded）树型网格。
The paper introduces the lazy-loaded mechanism to solve the problem, the method can load parts of XML document to memory according to the query, therefore, avoids unnecessary space cost.
针对该问题，本文介绍了XML延时加载机制，该机制根据查询请求将查询所涉及到的XML数据加载到内存，避免了不必要的空间开销。
In this section, you create a lazy loaded Dojo tree using JsonRestStore.
在这一部分，您可以使用JsonRestStore创建一个延迟加载的树。
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