Facilitating the Specification of Semantic Web Services Using Model-Driven Development

Abstract

The Semantic Web promises automated invocation, discovery, and composition of Web services by enhancing services with semantic descriptions. An upper ontology for Web services called OWLS has been created to provide a mechanism for describing service semantics in a standard, well-defined manner. Unfortunately, the learning curve for semantic-rich description languages such as OWLS can be steep, especially given the current state of tool support for the language. This paper describes a suite of automated software tools that we have developed to facilitate the construction of OWLS specifications. The tools operate in two stages. In the first stage, a model-driven architecture technique is used to generate an OWLS description of a Web service from a Unified Modeling Language (UML) model. This allows the developer to focus on creating a model of the Web service in a standard UML tool, leveraging existing knowledge. In the second stage, an interactive approach for generating groundings is used. This paper describes both tools and demonstrates how the use of lightweight interactive tools facilitates creation of OWLS specifications.

Issues in the Design of Flexible and Dynamic Service-Oriented Systems

“…Furthermore, it is necessary to understand the nature of transactions, especially since S 2 OA systems require a high degree of integrity while being flexible enough to cope with changes in the environment. In our previous investigations, we developed a Model-Driven Architecture (MDA)-based approach for specifying semantic Web services [9]. While the approach facilitates the act of creating a specification, we did not provide explicit assistance for identifying and analyzing different models of interaction or their impact on the resulting service composition.…”

A model-driven approach for reusing service compositions

“…Multi choice (6) and synchronization merge (7) patterns are significant for web services because they provide the logical function OR. The next one, multi merge pattern (8), joins two or more branches without synchronization.…”

“…Regarding parallel patterns (2)(3)(4)(5)(6)(7)(8)16) we select the minimum pattern set for defining the basic logical functions AND, XOR and OR applied to reusable services. Every logical function is fully defined by a split and a join pattern.…”

WSDRI-based Semantic Web Service Discovery Framework

“…And more and more applications come into distributed compute supported by many technologies such as CORBA, Java. Because of this environment and such technology, Web Service [1,2] comes forth. Web service is a coupled component that can be programmed via any program language such as Java, C#.…”

“…In the research of Web Service [1,2], semantic information should be automatically discovered, selected and composed. These automations can make usage of Web Service easily.…”