One area that may be of particular interest is introducing support for an object query language that can be used to retrieve objects.

特别重要的一点是，引入对可用于检索对象的对象查询语言的支持。

youdao

query the status of an object that has been indexed

查询已被索引的对象的状态

youdao

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)。

youdao