Ability to query the data using an object-oriented query language: object Constraint language (OCL).

能够使用以下面向对象的查询语言对数据进行查询：对象约束语言(Object Constraint Language, OCL)。

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In addition, it is possible to query the XML files as EMF objects using an object-oriented query language: object Constraint language (OCL).

此外，还可以使用以下这种面向对象的查询语言将XML文件作为EMF对象进行查询：对象约束语言(ocl)。

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The query language is based on the syntax of the object-oriented EJB QL that has been adapted to the object types found in the repository.

该查询语言基于面向对象的EJB QL的语法，此语法经过了改编以适应存储库中找到的对象类型。

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