以SQL预编译的构建为目的，提出一种基于ANTLR（ Another Tool for Language Recognition ）的SQL预编译设计模型。模型从编译原理的角度出发，采用扩展的巴科斯范式EBNF （ Extended Backus-Naur Form ）定义SQL文法规则。在定义文法规则时，兼顾了SQL语言的特点和ANTLR识别器的工作原理，提出两层分析、嵌入Java语言的设计策略；在语法解析时，通过借鉴树编辑距离的相关研究成果，将目标代码和用户代码进行映射，实现了语法树异同点的检测。%We put forward an ANTLR-based SQL pre-compilation design model for the purpose of SQL pre-compilation construction .From the pointview of compilation principle , the model uses the extended Backus-Naur form ( EBNF) to defined SQL grammar rules .When doing this, it takes into consideration both the characteristics of SQL language and the operational principle of ANTLR recognition unit , presents the design strategy of two layer analysis and embedded Java language .In grammar analysis , it maps the object code and user code by learning from the research outcome of related tree edit distance , and achieves the detection of the similarities and differences of syntactic tree .
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