Pattern-oriented software architecture is a new approach to software development. This book represents the progression and evolution of the pattern approach into a system of patterns capable of describing and documenting large-scale applications. A pattern system provides, on one level, a pool of proven solutions to many recurring design problems. On another it shows how to combine individual patterns into heterogeneous structures and as such it can be used to facilitate a constructive development of software systems. Uniquely, the patterns that are presented in this book span several levels of abstraction, from high-level architectural patterns and medium-level design patterns to low-level idioms. The intention of, and motivation for, this book is to support both novices and experts in software development. Novices will gain from the experience inherent in pattern descriptions and experts will hopefully make use of, add to, extend and modify patterns to tailor them to their own needs. None of the pattern descriptions are cast in stone and, just as they are borne from experience, it is expected that further use will feed in and refine individual patterns and produce an evolving system of patterns. Visit our Web Page http://www.wiley.com/compbooks/ ? einer der wichtigsten Beitr?ge zur Pattern-Fachliteratur... verdient es, in seinem Spezialgebiet zum Standardwerk zu werden. Overload, September 2000 Dieses praxisnahe Lehrbuch/Nachschlagewerk zeigt, wie Pattern die Entwicklung gro? angelegter Anwendungen erm?glichen und immer wieder auftretende Entwurfsprobleme l?sen k?nnen. Das Werk enth?lt einen Katalog von 25 in standardisiertem Format beschriebenen Mustern, die der Leser ?bernehmen oder an seine eigenen Entwicklungsprojekte anpassen kann. Dieses Handbuch ist Lehrbuch und Nachschlagewerk zugleich. Ausf?hrlich beschreibt es verschiedene Verfahren zur umfassenden L?sung h?ufig auftretender Software-Design-Probleme, darunter viele Richtlinien und l+