Design Patterns. Elements of Reusable Object-Oriented Software. [Englisch] [Gebundene Ausgabe]

Dieser Titel ist in englischer Sprache.
In Zeiten, in den sich Technik immer schneller fortentwickelt, kann man nur noch selten einzelne Bücher als Pflichtlektüre bezeichnen: zu kurz ist die Halbwertzeit. Entwurfsmuster. Elemente wiederverwendbarer objektorientierter Software ist genau einer dieser Klassiker, die unverzichtbare Lektüre für jeden Programmierer sind, der unter Verwendung von Objekten Software entwickelt. Diese CD-ROM enthält eine Hypertext-Version des Buches, zusammen mit zusätzlichen Funktionalitäten, die die Verwendung von Entwurfsmustern in eigenen Programmen stark vereinfachen.

Die CD-ROM funktioniert mit jedem javafähigen Browser, also zum Beispiel mit dem Internet Explorer 4.0 oder dem Netscape Communicator 4.5). Man erhält den kompletten Text der gedruckten Ausgabe, aber durch Hyperlinks angereichert. So kann man wahnsinnig schnell navigieren und noch effizienter mit Entwurfsmustern arbeiten. Durchdacht ist dabei, daß gleich zwei Versionen des Textes vorliegen: Eine für eine Bildschirmauflösung von 640x480 Pixeln, eine für höhere Auflösungen -- der mobile Einsatz auf einem Notebook vor Ort macht damit keine Probleme.

Entwursmuster sind Entwürfe höherer Ordnung, die immer wieder in obektorientierten Designs vorkommen. Das Herz dieses Titels ist der Muster-Katalog, der aus 23 grundlegenden Entwurfsmustern besteht. Auf der CD-ROM wird die Funktion jedes einzelnen Elements eingehend besprochen und Gründe für dessen Benutzung genannt. Außerdem gibt es immer Beispiel-Code in Smalltalk und C++. Das ist auch das Angenehme an dieser CD-ROM-Version: daß man einfach nur Copy&Paste machen muß, um die Beispiele gleich in seiner Software weiterzunutzen. Mit der Java-Suchmaschine auf der CD-ROM kann man schnell nach Stichworten suchen, und auch die Querverweise machen das Arbeiten sehr bequem.

Alles in allem ist die Design Patterns CD eine ansprechende neue Version eines der wichtigsten Bücher über objektorientierte Programmierung. -- Dieser Text bezieht sich auf eine andere Ausgabe: CD-ROM .

Design Patterns is based on the idea that there are only so many design problems in computer programming. This book identifies some common program-design problems--such as adapting the interface of one object to that of another object or notifying an object of a change in another object's state--and explains the best ways (not always the obvious ways) that the authors know to solve them. The idea is that you can use the authors' sophisticated design ideas to solve problems that you often waste time solving over and over again in your own programming.

The authors have come up with some ingenious ways to solve some common vexations among object-oriented programmers. Want to build a page-layout program that embeds inline images among characters of various sizes? How about building a program that converts files of one format to another? Chances are, some programmer already has thought of a better solution than you will and the recipes you need are here. Solutions are presented in generalised diagrams of data and logic structures. The idea is that you can take the concepts presented here and adapt them--in whatever language you use--to your individual situation. You may have to read some of the chapters several times before you fully understand them, but when you find a solution in this book, it will make your job easier and your results more elegant. --Jake Bond

Design Patterns is a modern classic in the literature of object-oriented development, offering timeless and elegant solutions to common problems in software design. It describes patterns for managing object creation, composing objects into larger structures, and coordinating control flow between objects. The book provides numerous examples where using composition rather than inheritance can improve the reusability and flexibility of code. Note, though, that it's not a tutorial but a catalog that you can use to find an object-oriented design pattern that's appropriate for the needs of your particular application--a selection for virtuoso programmers who appreciate (or require) consistent, well-engineered object-oriented designs.

* Capturing a wealth of experience about the design of object-oriented software, four top-notch designers present a catalog of simple and succinct solutions to commonly occurring design problems. Previously undocumented, these 23 patterns allow designers to create more flexible, elegant, and ultimately reusable designs without having to rediscover the design solutions themselves. * The authors begin by describing what patterns are and how they can help you design object-oriented software. They then go on to systematically name, explain, evaluate, and catalog recurring designs in object-oriented systems. With Design Patterns as your guide, you will learn how these important patterns fit into the software development process, and how you can leverage them to solve your own design problems most efficiently.

*Capturing a wealth of experience about the design of object-oriented software, four top-notch designers present a catalog of simple and succinct solutions to commonly occurring design problems. Previously undocumented, these 23 patterns allow designers to create more flexible, elegant, and ultimately reusable designs without having to rediscover the design solutions themselves. *The authors begin by describing what patterns are and how they can help you design object-oriented software. They then go on to systematically name, explain, evaluate, and catalog recurring designs in object-oriented systems. With Design Patterns as your guide, you will learn how these important patterns fit into the software development process, and how you can leverage them to solve your own design problems most efficiently.

request to send a new pattern
Erich Gamma,

This might be a surprise mail for you as you don't know me before, I have heard a lot about you and have read many books written by you.

I would like to share a design pattern with you, which I feel it might be useful for Software development. Would appreciate if you could let me know whether I can mail you the pattern.

Currently I do the architectural software design for SCF admin tools project in Siemens ICP ( San Jose).

thank you meyyappan

Capturing a wealth of experience about the design of object-oriented software, four top-notch designers present a catalog of simple and succinct solutions to commonly occurring design problems. Previously undocumented, these 23 patterns allow designers to create more flexible, elegant, and ultimately reusable designs without having to rediscover the design solutions themselves.

The authors begin by describing what patterns are and how they can help you design object-oriented software. They then go on to systematically name, explain, evaluate, and catalog recurring designs in object-oriented systems. With Design Patterns as your guide, you will learn how these important patterns fit into the software development process, and how you can leverage them to solve your own design problems most efficiently.

Each pattern describes the circumstances in which it is applicable, when it can be applied in view of other design constraints, and the consequences and trade-offs of using the pattern within a larger design. All patterns are compiled from real systems and are based on real-world examples. Each pattern also includes code that demonstrates how it may be implemented in object-oriented programming languages like C++ or Smalltalk.

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David Tansley has many years' experience in UNIX, and more recently Linux, as a systems administrator on a variety of platforms, and is currently a Systems and Database Administrator at Ace Global Markets, a Lloyds of London Underwriting Agency.

This book isn't an introduction to object-oriented technology or design. Many books already do a good job of that. This book assumes you are reasonably proficient in at least one object-oriented programming language, and you should have some experience in object-oriented design as well. You definitely shouldn't have to rush to the nearest dictionary the moment we mention "types" and"polymorphism," or "interface" as opposed to "implementation" inheritance.

On the other hand, this isn't an advanced technical treatise either. It's a book of design patterns that describes simple and elegant solutions to specific problems in object-oriented software design. Design patterns capture solutions that have developed and evolved over time. Hence they aren't the designs people They reflect untold redesign and recoding as developers have struggled for greater reuse and flexibility in their software.Design patterns capture these solutions in a succinct and easily applied form.

The design patterns require neither unusual language features nor amazing programming tricks with which to astound your friends and managers. All can be implemented in standard object-oriented languages, though they might take a little more work than ad hoc solutions. But the extra effort invariably pays dividends in increased flexibility and reusability.

Once you understand the design patterns and have had an "Aha!" (and not just a "Huh?") experience with them, you won't ever think about object-oriented design in the same way. You'll have insights that can make your own designs more flexible, modular, reusable, and understandable - which is why you're interested in object-oriented technology in the first place, right?

A word of warning and encouragement: Don't worry if you don't understand this book completely on the first reading. We didn't understand it all on the first writing! Remember that this isn't a book to read once and put on a shelf. We hope you'll find yourself referring to it again and again for design insights and for inspiration.

This book has had a long gestation. It has seen four countries, three of its authors' marriages, and the birth of two (unrelated) offspring.Many people have had a part in its development. Special thanks are due Bruce Andersen, Kent Beck, and Andre Weinand for their inspiration and advice. We also thank those who reviewed drafts of the manuscript: Roger Bielefeld, Grady Booch, Tom Cargill, Marshall Cline, Ralph Hyre, Brian Kernighan, Thomas Laliberty, Mark Lorenz, Arthur Riel, Doug Schmidt, Clovis Tondo, Steve Vinoski, and Rebecca Wirfs-Brock. We are also grateful to the team at Addison-Wesley for their help and patience: Kate Habib, Tiffany Moore, Lisa Raffaele, Pradeepa Siva, and John Wait. Special thanks to Carl Kessler, Danny Sabbah, and Mark Wegman at IBM Research for their unflagging support of this work.

Last but certainly not least, we thank everyone on the Internet and points beyond who commented on versions of the patterns, offered encouraging words, and told us that what we were doing was worthwhile. These people include but are not limited to Ran Alexander, Jon Avotins, Steve Berczuk, Julian Berdych, Matthias Bohlen, John Brant, Allan Clarke, Paul Chisholm, Jens Coldewey, Dave Collins, Jim Coplien, Don Dwiggins, Gabriele Elia, Doug Felt, Brian Foote, Denis Fortin, Ward Harold, Hermann Hueni, Nayeem Islam, Bikramjit Kalra, Paul Keefer, Thomas Kofler, Doug Lea, Dan LaLiberte, James Long, Ann Louise Luu, Pundi Madhavan, Brian Marick, Robert Martin, Dave McComb, Carl McConnell, Christine Mingins, Hanspeter Mossenbock, Eric Newton, Marianne Ozcan, Roxsan Payette, Larry Podmolik, George Radin, Sita Ramakrishnan, Russ Ramirez, Dirk Riehle, Bryan Rosenburg, Aamod Sane, Duri Schmidt, Robert Seidl, Xin Shu, and Bill Walker.

We don't consider this collection of design patterns complete and static; it's more a recording of our current thoughts on design. We welcome comments on it, whether criticisms of our examples, references and known uses we've missed, or design patterns we should have included. You can write us care of Addison-Wesley, or send electronic mail to design-patterns@cs.uiuc.edu. You can also obtain softcopy for the code in the Sample Code sections by sending the message "send design pattern source" to design-patterns-source@cs.uiuc.edu.

Mountain View, California - E.G.
Montreal, Quebec - R.H.
Urbana, Illinois - R.J.
Hawthorne, New York - J.V.

August 1994

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