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统一描述、发现和集成(universal description,discovery and integration,UDDI)协议针对服务质量的扩展使Web服务描述与注册的元数据间存在差异,海量服务的注册不仅破坏UDDI数据的一致性,还使数据关系变得复杂难以维护。该文分析了UDDI元数据模型和Web服务描述语言(Web service description language,WSDL)的元数据拓扑结构,通过扩展WSDL Schema引入服务质量描述元素,从而建立UDDI和WSDL元数据间的一致表述,并通过拓扑矩阵的变换实现WSDL元数据的拓扑关系到UDDI数据空间的映射,不仅可以维护WSDL和UDDI间的数据关系和数据一致性,并且为Web服务的开发和注册提供更加灵活的方式,提高UDDI数据的利用率和共享度。
The extension of the Universal Description, Discovery and Integration (UDDI) protocol for quality of service differentiates Web service descriptions from registered metadata, the registration of massive services not only undermines the consistency of UDDI data but also enables data Relationship becomes complicated and difficult to maintain. This paper analyzes the metadata topology of UDDI metadata model and Web Services description language (WSDL), and introduces the quality of service description element by extending WSDL Schema to build a consistent representation between UDDI and WSDL metadata. Topology transformation of topological matrices to achieve WSDL metadata topology mapping to UDDI data space can not only maintain the data relation and data consistency between WSDL and UDDI, but also provide a more flexible way for the development and registration of Web services to improve UDDI Data utilization and sharing.