Component mining: a process and its pattern language

An important issue in a component-based software development process is the supply source of mature, reliable, adaptable, and maintainable components. We define as component mining the deliberate, organised, and automated process of extracting reusable components from an existing rich software base and present a pattern language used for mining components from programs that are typically executed as non-interactive autonomous processes. We describe the patters in terms of intent, motivation, applicability, structure, participants, consequences, and implementation. Based on the pattern language, we describe the implementation of a set of COM components that encapsulate the Unix filters and an exemplar application that uses them.