Weijian Fang

Exposing UDDI Service Descriptions and Their Metadata Annotations as WS-Resources

Service discovery is a critical task in service-oriented architectures. GRIMOIRES is a UDDI-compliant service registry with rich metadata annotation capabilities. In this paper, we present a WSRF-compliant extension of the GRIMOIRES architecture that exposes service descriptions and their metadata annotations as WS-Resources. By doing so, the service registry provides improved interoperability by allowing service descriptions to be accessed and managed via standard Web services operations. In particular, we can access service descriptions, manage the lifetime of service descriptions, and subscribe for notifications of change in service descriptions. The paper discusses the benefits and design choices associated with such an approach and the technical challenges in providing an implementation

XMLView: Discover domain specific service description in a UDDI compliant registry

In recent years we have seen the wide adoption of Web services architecture in grid computing. Service discovery, as one of the critical tasks in Web services architecture, is addressed by the UDDI specification. However, UDDI does not gain as much popularity as other Web services specifications such as WSDL and SOAP. At the same time, a number of domain-specific service description models are developed to address the problem of service discovery in specific application domains of grid computing. In this paper, we argue that both UDDI and domain-specific service description models can complement each other, instead of replacing each other. To demonstrate this, we present a system called XMLView that is able to accommodate domain-specific service descriptions and present them in a UDDI compliant view. Queries expressed on the domain-specific model are also supported.