Xml Application Semantics Constraint Style Table

XML is an mechanism to carry datum of complex structures. Its focus is mainly on the content of datum and structure instead of their representation. XML is used in a broad area, which urges the research on the semantics of XML applications with the applicable resolution. Those above are short of by traditional research paradigms.There are two paradigms in the analysis of semantics: The modeling approach and constraint approach, In this paper we made a constraint mechanism on application semantics of XML applications based on the assertion mechanism to impose a system contract during the process of software engineering and increase the confidence on system functionalities.The original intention of XSLT technology is to be an Agent of visual presentation, However, In this paper we enable the semantics constraint through the extension of a XSLT processor Xalan-Java. So that a Semantics style-sheet can be made to compose all kinds of semantics constraint among applications. Examples are shown to illustrate the Style-Sheet's functionalities.