The field of software engineering and software technology is developing very fast. Perhaps as a consequence, there is seldom enough interest or opportunity for systematic investigation of how the underlying technology...The field of software engineering and software technology is developing very fast. Perhaps as a consequence, there is seldom enough interest or opportunity for systematic investigation of how the underlying technology will actually perform. That is, we introduce new concepts, methods, techniques and tools – or change existing ones and emphasize their value. A major turn in software engineering leading to Componentware has dramatically changed the shape of software development and introduced interesting methods for the design and rapid development of systems which may provide cost-effective benefits. In this paper we will discuss Componentware, process model, architecture, principles and the drivers, advantages, disadvantage and reveal profound changes from the traditional software engineering approaches.展开更多
How to compose prefabricated components is a key issue in component-based reuse. Research on Software Architecture (SA) and Component-based Software Development (CBSD) provides two hopeful solutions from different per...How to compose prefabricated components is a key issue in component-based reuse. Research on Software Architecture (SA) and Component-based Software Development (CBSD) provides two hopeful solutions from different perspectives. SA provides a top-down approach to realizing component-based reuse. However, it pays insufficient attention to the refinement and implementation of the architectural descriptions, and does not provide the necessary capability to automate the transformation or composition to form a final executable application. CBSD provides a bottom-up way by using existing middleware infrastructures. However, these technologies do not take into account the systematic methodology that can guide the CBSD process, especially the component composition at higher abstract levels. We argue that it is a natural solution to combine these two approaches.In this paper, an architecture-based component composition approach is presented. In this way, SA description, using mapping rules and mini-tools to narrow the gap between design and implementation , is used as the blueprint and middleware technology as the runtime scaffold for component composition. Our approach presents an ADL, which supports user-defined connectors and has an extensible framework, to specify software architectures. To map a SA description into implementation, it is necessary to map it first to an OO design model described in UML, then to the final implementation. The architectural description can be mapped into source code or executable code by using some ORB conforming to CORBA standard. Also a toolkit is provided to support this approach efficiently.展开更多
The present situation of research on Rapid Reconfigurable Information System (RRIS)is analyzed. Andthen,the advantages of BCRRIS (Business Component-based RRIS)are summarized. Moreover,strategies of BCRRISare discusse...The present situation of research on Rapid Reconfigurable Information System (RRIS)is analyzed. Andthen,the advantages of BCRRIS (Business Component-based RRIS)are summarized. Moreover,strategies of BCRRISare discussed briefly. The emphasis is paid on the key technologies of BCRRIS,including software architecture ofBCRRIS,business components,component model (CORBA CCM)and a framework of BCRRIS.展开更多
文摘The field of software engineering and software technology is developing very fast. Perhaps as a consequence, there is seldom enough interest or opportunity for systematic investigation of how the underlying technology will actually perform. That is, we introduce new concepts, methods, techniques and tools – or change existing ones and emphasize their value. A major turn in software engineering leading to Componentware has dramatically changed the shape of software development and introduced interesting methods for the design and rapid development of systems which may provide cost-effective benefits. In this paper we will discuss Componentware, process model, architecture, principles and the drivers, advantages, disadvantage and reveal profound changes from the traditional software engineering approaches.
基金This work was supported by the 9th State Five-Year Plan, State 863 High-Tech Program, and the National Natural Science Foundation of China It also got support from Bell-Labs China and Software Production Research of Bell-Labs.
文摘How to compose prefabricated components is a key issue in component-based reuse. Research on Software Architecture (SA) and Component-based Software Development (CBSD) provides two hopeful solutions from different perspectives. SA provides a top-down approach to realizing component-based reuse. However, it pays insufficient attention to the refinement and implementation of the architectural descriptions, and does not provide the necessary capability to automate the transformation or composition to form a final executable application. CBSD provides a bottom-up way by using existing middleware infrastructures. However, these technologies do not take into account the systematic methodology that can guide the CBSD process, especially the component composition at higher abstract levels. We argue that it is a natural solution to combine these two approaches.In this paper, an architecture-based component composition approach is presented. In this way, SA description, using mapping rules and mini-tools to narrow the gap between design and implementation , is used as the blueprint and middleware technology as the runtime scaffold for component composition. Our approach presents an ADL, which supports user-defined connectors and has an extensible framework, to specify software architectures. To map a SA description into implementation, it is necessary to map it first to an OO design model described in UML, then to the final implementation. The architectural description can be mapped into source code or executable code by using some ORB conforming to CORBA standard. Also a toolkit is provided to support this approach efficiently.
文摘The present situation of research on Rapid Reconfigurable Information System (RRIS)is analyzed. Andthen,the advantages of BCRRIS (Business Component-based RRIS)are summarized. Moreover,strategies of BCRRISare discussed briefly. The emphasis is paid on the key technologies of BCRRIS,including software architecture ofBCRRIS,business components,component model (CORBA CCM)and a framework of BCRRIS.
