关键词: 情境感知, Context, 框架, 遗产软件

Abstract: With the fast development of the information technology, our decisions are effected by all kinds of information in the environment. Therefore it’s more and more important to provide intelligent applications that can offer appropriate services according to users’ current situation and needs. However many legacy applications don’t support context-awareness and the main programming languages or frameworks do not provide efficient approach to weave context-awareness into legacy applications. This paper proposes a novel context-oriented context-aware application programming framework. It can support context definition, encapsulation and publication. With the framework, application behaviors can be driven and constrained in a context-aware manner. The framework allows applications to rapidly response to unanticipated context. Moreover, it provides an approach to add context-awareness functions to the legacy applications in a non-intrusive way.

Key words: context-aware, Context, framework, legacy software