The new elements of the Silverstream Extend suite were launched at JavaOne in San Francisco last week. The system runs on Java-based application servers such as IBM's Websphere and BEA's Weblogic as well as Silverstream's own offering. It provides an environment for the development and management of interactive Web services.
WSFL is an emerging XML language mooted by IBM that describes Web services compositions (collections of services required for a specific business process). There are two basic types of compositions: the flow model specifies the usage pattern of a group of services; and the global model shows the interactions between those services.
WSFL is being put forward as an open standard and it is likely that Microsoft will integrate it with its own business process automation language, Xlang, used by its Biztalk .net Server.
Silverstream Extend comprises three basic applications: Composer, Director and Workbench. Composer 3.5 provides XML-based integration with back-end legacy systems and automates the business processes; Director provides an infrastructure for the rapid development of dynamic business applications; and Workbench is an integrated development environment that is compliant with J2EE 1.3.