XWRAP: An XML-Enabled Wrapper Construction System for Web Information Sources

This paper describes the methodology and the software development of XWRAP, an XML-enabled wrapper construction system for semi-automatic generation of wrapper programs. By XML-enabled we mean that the metadata about information content that are implicit in the original web pages will be extracted and encoded explicitly as XML tags in the wrapped documents. In addition, the query-based content ltering process is performed against the XML documents. The XWRAP wrapper generation framework has three distinct features. First, it explicitly separates tasks of building wrappers that are speci c to a Web source from the tasks that are repetitive for any source, and uses a component library to provide basic building blocks for wrapper programs. Second, it provides a user-friendly interface program to allow wrapper developers to generate their wrapper code with a few mouse clicks. Third and most importantly, we introduce and develop a two-phase code generation framework. The rst phase utilizes ...

• Type: Conference
• Year: 2000
• Where: ICDE
• Authors: Ling Liu, Calton Pu, Wei Han
• Keywords: Database, ICDE 2000, Individual Wrapper Developers, Wrapper Generation Framework, XML-enabled Wrapper Construction