Typically, the accessor factory uses a path expression to locate a particular document node or to create a node (or even a complete path of nodes) in the state document model.

通常，访问器工厂使用路径表达式来定位特定的文档节点，或在状态文档模型中创建阶段（甚至阶段的完整路径）。

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For example, you can create a data set of all of the UML Actors in the model using //Actor, even though in the XML document for the model there is no such node as "Actor."

例如，您可以在模型使用//Actor 中创建所有 UML Actors 的数据集，即使是在)没有 “Actor”这样节点的模型 XML 文献中。

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This model has defined 4 extra persistent DOM node types, designed a storing method of mixed structure XML documents and created clustered data based on XML document orders.

此模型扩展定义了4种持久化dom节点类型，设计了一种存储混合型XML文档的方法，并依据文档的次序建立了数据聚集。

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