(Behavioural) Design Patterns as  Composition Operators

Kung-Kiu Lau, Ioannis Ntalamagkas, Cuong Tran \and Tauseef Rana.

School of Computer Science, The University of Manchester
Manchester M13 9PL, United Kingdom
{kung-kiu,intalamagkas,ctran,ranat}@cs.manchester.ac.uk

Abstract:

Design patterns are typically defined informally, albeit in a standard 
format, and have to be programmed by the software designer into each 
new application. Thus although patterns support solution reuse, in 
practice this does not translate into code reuse.  In this paper we 
argue that to achieve code reuse, patterns should be defined and used 
in the context of software component models. We show how in such a 
model, behavioural patterns can be defined as composition operators 
which can be stored in a repository, alongside components, thus 
enabling code reuse.