XQuery语言的实现

An implementation of XQuery language

首先分析了万维网联合会(W3C)提出的XML查询语言XQuery语言的特点,提出了支持W3C的XQuery语言查询处理引擎的体系结构。简要介绍了基于该体系结构所实现的XQuery处理引擎的词法/语法解析、语法转换、类型检查和分析、赋值计算等四个处理阶段涉及的主要内容。

XQuery is a working draft specification on XML query language proposed by W3C(World Wide Web Consortum).On the basis of analyzing of the features of XQuery,We prosed the architecture of XQuery process engine that been implemented as a prototype.Directed by this architecture,four main process phases (lexical/grammar analysis,conversion between surface grammar and core grammar,type checking and analyzing,evaluation.)are described.