Towards Context-Aware Adaptable Web Services.

ABSTRACT In this paper, we present a context framework that facilitates the development and deployment of context-aware adaptable Web services. Web services are provided with context information about clients that may be utilized to provide a personalized behavior. Context is extensible with new types of information at any time without any changes to the underlying infrastructure. Context processing is done by Web services, context plugins, or context services. Context plugins and context services pre-and post-process Web service messages based on the available context information. Both are essential for automatic context processing and automatic adaption of Web services to new context types without the necessity to adjust the Web services themselves. We implemented the context framework within the ServiceGlobe system, our open and distributed Web service platform

Towards Context-Aware Adaptable Web Services

In this paper, we present a context framework that facilitates the development and deployment of context-aware adaptable Web services. Web services are provided with context information about clients that may be utilized to provide a personalized behavior. Context is extensible with new types of information at any time without any changes to the underlying infrastructure. Context processing is done by Web services, context plugins, or context services. Context plugins and context services pre- and post-process Web service messages based on the available context information. Both are essential for automatic context processing and automatic adaption of Web services to new context types without the necessity to adjust the Web services themselves. We implemented the context framework within the ServiceGlobe system, our open and distributed Web service platform

Flexible and Reliable Web Service Execution

The next generation of Internet applications is emerging: Web services.In this work, we present novel techniques for a flexible and reliable execution and deployment of Web services which can be integrated into current service platforms. Dynamic service selection allows selecting Web service instances during runtime by means of semantic classifications

ServiceGlobe: Flexible and Reliable Web Services on the Internet

this paper. 5. CONCLUSION The implementation of ServiceGlobe and the two presented techniques, dynamic service selection and the generic dispatcher service, is finished. A demo of ServiceGlobe and an e-procurement scenario was given at VLDB'02 [3]. Currently, the ServiceGlobe system is installed on a blade server with 160 processors overall (with 2 and 4 processors per server blade, respectively) operated by the Advanced Infrastructure Program group of SAP. Right now, performance evaluations with high-volume business applications are conducted using this blade server and the presented techniques. For the future, we plan to work on caching of SOAP messages and to further investigate context for Web service