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Patterns for Effective Use Cases, 1st edition

  • Steve Adolph
  • Paul Bramble
  • Alistair Cockburn
  • Andy Pols

Published by Addison-Wesley Professional (August 20th 2002) - Copyright © 2003

1st edition

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Overview

Use cases have become an integral part of modeling software requirements, but many software developers are discovering that writing effective use cases is more difficult than they had anticipated. An understanding of the basic principles of use cases is not enough. Software developers need a source of objective criteria by which to judge quality and effectiveness.

Patterns for Effective Use Cases provides this set of objective criteria. Written by experienced use case practitioners, this book fills a critical information gap by presenting a pattern language that contains over thirty patterns, providing simple, elegant, and proven solutions to the most common problems in use case development. These patterns distill and define the properties and characteristics of quality use cases. As such, they facilitate the development of original use cases and provide a diagnostic tool for evaluating existing ones.

The book opens with a review of use cases and pattern fundamentals, along with a discussion of the requirements-gathering team. These patterns address the use case development process, the internal structure of use cases, and the relationships among use cases within the system as a whole. Examples of patterns include:

  • BreadthBeforeDepth
  • VisibleBoundary
  • EverUnfoldingStory
  • IntentionRevealingName
  • PreciseAndReadable
  • LeveledSteps
  • InterruptsAsExtensions
  • RedistributeTheWealth

Each pattern discussion includes at least one example demonstrating its real-world application, highlighting both the benefits of using the pattern and the consequences of not doing so. In addition, the book presents guidelines for the effective use of UML with relevant patterns.

Anyone involved in use case writing or requirements gathering will find Patterns for Effective Use Cases an indispensable handbook and reference.



0201721848B07302002

Table of contents



Preface.


1. What is a Quality Use Case?

Why Use Cases at All?

What's So Hard About Telling Good Stories?

Why a Use Case Pattern Language?

What are Patterns.

How Should I use this Pattern Language.

What is he Use Case Pattern Form?

Stepping Through a Sample Pattern.

The Examples.

Organization of the Pattern Catalog.

Process Patterns.

Structural Patterns.

Supplement: A Brief Tutorial on Writing Use Cases.


2. The Team.

Team organizational issues.

SmallWritingTeam(47).

ParticipatingAudience(50).

BalancedTeam(54).

Tradeoffs and Collaborations.


3. The Process.

BreadthBeforeDepth(63).

Breadth Before Depth and UML by Dan Rawthorne.

SpiralDevelopment(66).

SpiralDevelopment and UML Models by Dan Rawthorne.

MultipleForms(83).

QuittingTime(71).

TwoTierReview(76).

WritersLicense(80).

Tradeoffs and Collaborations.


4. The Use Case Set.

SharedClearVision(95).

VisibleBoundary(101).

VisibleBoundary(101) and UML Models by Dan Rawthorne.

ClearCastOfCharacters(105).

UserValuedTransactions(110).

EverUnfoldingStory(117).

EverUnfoldingStory and UML Models by Dan Rawthorne.

Tradeoffs and Collaborations.


5. The Use Case.

CompleteSingleGoal(132).

IntentionRevealingName(144).

ScenarioPlusFragments(136).

ExhaustiveAlternatives(140).

Adornments(147).

PreciseAndReadable(152).

Tradeoffs and Collaborations.


6. Scenarios and Steps.

DetectableConditions(168).

LeveledSteps(173).

VisibleActorIntent(161).

ForwardProgress(164).

TechnologyNeutral(177).

Tradeoffs and Collaborations.


7. Use Case Relationships.

CommonSubBehavior(186).

CommonSubBehaviour and UML by Dan Rawsthorne.

InterruptsAsExtensions(191).

InterruptsAsExtensions and UML by Dan Rawsthorne.

Extensions and UML Extension Points.

PromoteAlternative(196).

PromoteAlternatives and UML by Dan Rawsthorne.

Tradeoffs and Collaborations.

Supplement.

CaptureTheAbstraction — A Pattern for Applying UML Generalization by Dan Rawsthorne.

Capture the Abstraction and UML.


8. Editing Existing Use Cases.

RedistributeTheWealth(206).

MergeDroplets(211).

CleanHouse(216).

Tradeoffs and Collaborations.


Index 0201721848T05162002

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