Design And Implementation Of A Component Composition Tool

With the complexity and requirement of software systems increasing dramatically, the software developments meet great challenges. As a technology for software reuse, component technology aims at these challenges.Component-Based Composition Tool is used for software reuse, and let user to develop application more easily. Composition Tool is based on some kinds of component model. Now ,there are two kinds of commerce component model ,one is COM , which belongs to Microsoft and based on OLE . Another is Ejb/JavaBeans, which belongs to Sun.Composition tool is used for software reuse, so when design a composition tool, first thing should be thought about is how to make software reuse more easily. The component model should give the component information of self-description, so it can be easily used in deferent environments. And composition tool should have the abilities to deal with the self-description information of components.In this paper, we analyze the JavaBeans , get the features related to software reuse, and extend the model, make it more easily for reuse. We extend the ability of self-description, and the self-description has five contracts: Syntax, Behavior, Synchronization, Quality of Service, Non-Technical Description. At last ,we extend the Bean Box, make it fit for Extended JavaBeans component model.