Creating applications using object-oriented frameworks is often difficult, since subclassing plays a too important role. Subclassing is a “white-box” form of reuse, and thus requires the developer to understand the underlying implementation. In the approach described in this paper, class composition is introduced as a form of black-box class reuse. It may be seen to extend the concept of parame...

In this paper we present the Reactor Pattern to enable the modelling of processes that consume inputs and produce outputs under specific environmental conditions and on being triggered by certain events. Reactor pattern is a content ontology design pattern and is especially targeted towards modelling reactive processes with a “black box” view of the process.