Interoperability of Software Components

我们开发了一种可扩展的构件描述语言SCL（Software specification and Commerce Language）。SCL既能描述接口规范，又能描述商务信息。在接口规范方面，SCL可以描述基于CORBA IDL的接口签名，也可以描述基于CORBA IDL的接口签名。接口语义通过契约和接口上下文通过设计模式。SCL是基于HTML/XML的，因此它可以在Web上显示信息。组件接口的语义通过类图描述组件的静态结构，通过序列图描述组件的动态行为，并提出了一种SCB（SoftwareCommerceBroker）来收集、表示和检索用SCL描述的组件信息，并开发了SCL的原型。在SCB提供的功能中，SCL编辑器帮助用户描述组件接口，Internet代理可以从世界各地的Web站点收集组件信息。我们收集了约1，6000个成分的资料，并评估了SCL和SCB的有效性。

We developed an extensible component description language named SCL(Software specification and Commerce Language). SCL can describe both interface specification and commerce information. For interface specification, SCL can describe the interface signature based on CORBA IDL as well as. interface semantics by contract and interface context by means of Design Patterns. SCL is based on HTML/XML so that it can present the information on the Web. Semantics of the component interface is described by a static structure around the component with a class diagram and by the dynamic behavior with a sequence diagram.We also proposed a SCB(Software Commerce Broker) to collect, present, and retrieve components information described with SCL, and developed a prototype of the SCL.Among the functions provided in the SCB, SCL editor helps the users to describe the components interface and an internet agent can collect the component information from the Web sites around the world. We collected some 1,6000 components information and evaluated the effectiveness of the SCL and SCB.