用JavaCC和JJTree构造扩展DTD解析器

XML正成为Internet上数据描述和交换的主要标准,因此对面向对象XML存储研究变的很重要.通过扩展DTD的支持使得XML文档具有面向对象的特性,通过对扩展DTD的解析,从而获取XML模式信息,这些信息不仅支持查询语言和XML文档的有效性检查,而且支持新存储模式建立.如何有效的获取这些信息成为研究重点.

Designing The Parser of Extended DTD by JavaCC and JJTree

XML is emerging as the dominant standard for data representation and exchange over the Web.So the study of storage is becoming important more and more on object-oriented XML data.Extended DTD supports the object-oriented XML data,through parse the Extended XML Schema,we can get the relationship among elements,which not only supports the new data model,but also supports the new way of query and the validity of language and XML document.In this paper,we introduce the system design of complier on Extended DTD.