IntelligentPad approach provides a standard for dynamically linkable components. Based on the standard, this paper introduces an approach of developing dynamically linkable components by using object oriented techniques.
Software component library is the essential part of reuse-based softwaredevelopment. It is shown that making use of a single component library to store all kinds ofcomponents and from which components are searched is ...Software component library is the essential part of reuse-based softwaredevelopment. It is shown that making use of a single component library to store all kinds ofcomponents and from which components are searched is very inefficient. We construct multi-librariesto support software reuse and use PVM as development environments to imitate large-scale computer,which is expected to fulfill distributed storage and parallel search of components efficiently andimprove software reuse.展开更多
A continuing challenge for software designers is to develop efficient and cost-effective software implementations. Many see software reuse as a potential solution;however, the cost of reuse tends to outweigh the poten...A continuing challenge for software designers is to develop efficient and cost-effective software implementations. Many see software reuse as a potential solution;however, the cost of reuse tends to outweigh the potential benefits. The costs of software reuse include establishing and maintaining a library of reusable components, searching for applicable components to be reused in a design, as well as adapting components toward a proper implementation. In this context, a new method is suggested here for component classification and retrieval which consists of K-nearest Neighbor (KNN) algorithm and Vector space Model Approach. We found that this new approach gives a higher accuracy and precision in component selection and retrieval process compared to the existing formal approaches.展开更多
Software reuse is considered as a practical approach to solving the software crisis. The BD-HCRUS, a software development supporting system based on heterogeneous component reuse, is introduced. The system has a reusa...Software reuse is considered as a practical approach to solving the software crisis. The BD-HCRUS, a software development supporting system based on heterogeneous component reuse, is introduced. The system has a reusable component library as its kernel in charge of the organization, storage and retrieval of the heterogeneous components, an object-oriented integrated language for the specification and composition of the heterogeneous components, and program comprehension tools for reverse-engineering and extracting reusable components from source code, then re-engineering the components. Therefore, a whole support is lent systematically to the acquisition, specification, organization, storage, retrieval and composition of reusable components.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
文摘IntelligentPad approach provides a standard for dynamically linkable components. Based on the standard, this paper introduces an approach of developing dynamically linkable components by using object oriented techniques.
基金Supported by the National High Performance Computation Foundation(984057)
文摘Software component library is the essential part of reuse-based softwaredevelopment. It is shown that making use of a single component library to store all kinds ofcomponents and from which components are searched is very inefficient. We construct multi-librariesto support software reuse and use PVM as development environments to imitate large-scale computer,which is expected to fulfill distributed storage and parallel search of components efficiently andimprove software reuse.
文摘A continuing challenge for software designers is to develop efficient and cost-effective software implementations. Many see software reuse as a potential solution;however, the cost of reuse tends to outweigh the potential benefits. The costs of software reuse include establishing and maintaining a library of reusable components, searching for applicable components to be reused in a design, as well as adapting components toward a proper implementation. In this context, a new method is suggested here for component classification and retrieval which consists of K-nearest Neighbor (KNN) algorithm and Vector space Model Approach. We found that this new approach gives a higher accuracy and precision in component selection and retrieval process compared to the existing formal approaches.
文摘Software reuse is considered as a practical approach to solving the software crisis. The BD-HCRUS, a software development supporting system based on heterogeneous component reuse, is introduced. The system has a reusable component library as its kernel in charge of the organization, storage and retrieval of the heterogeneous components, an object-oriented integrated language for the specification and composition of the heterogeneous components, and program comprehension tools for reverse-engineering and extracting reusable components from source code, then re-engineering the components. Therefore, a whole support is lent systematically to the acquisition, specification, organization, storage, retrieval and composition of reusable components.
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.
