This paper has conducted a research on Web services runtime adaptability. First, the paper has analyzed the current research status and its problems. Then, a comprehensive framework is put forward for runtime adaptability of Web services. The framework introduces prerequisites to restrict the existing find and binding mechanism, which enhances efficiency in the implementation process. Meanwhile, BPEL and WSDL languages have been refined to support semantic Web services selection. The framework only focuses on WSDL extension, thus it can be applied to any semantic Web service invocation framework.
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