Software reuse promises high value to businesses that develop software, opening the door to radical improvements in productivity, cost, and time to market. This book is for those who are wondering whether they should adopt reuse and how, and also for those who have already started to adopt it but are wondering where they may be going wrong and how they could do better. It emphasizes the practical issues that influence success or failure in reuse; and offers a concise and balanced coverage of the essentials.

Inhalt

1. Introducing Software Reuse.- 1.1 First of All.- 1.2 Definition and Basic Essentials.- 1.2.1 Reuse Is a Systematic Software Development Practice.- 1.2.2 Reuse Employs a Stock of Building Blocks.- 1.2.3 Reuse Expoits Similarities in Requirements and/or Architecture Between Applications.- 1.2.4 Reuse Offers Substantial Benefits in Productivity, Quality and Business Performance.- 1.3 Some Further Introductory Essentials.- 1.3.1 There Are Various Routes by Which Assets Achieve Reuse.- 1.3.2 There Is an Important Relationship Between Reuse and Software Process Maturity.- 1.3.3 Reuse Is an Investment, Whether or Not You Call It That.- 1.3.4 Reuse May Be Pursued Within the Wider Business Context of Product Line Practice.- 1.4 Systematic Reuse - Crossing Frontiers.- 1.4.1 Systematic Reuse as a Critical Transition.- 1.4.2 Why So Long?.- 1.5 A Note on the Experience Base Used in This Book.- 2. Reusable Software Assets.- 2.1 What Is a Software Asset?.- 2.1.1 A Software Asset Is a Software Product.- 2.1.2 What Kind of Asset?.- 2.1.3 Asset Granularity.- 2.1.4 What Is an Asset Made of? The Asset Model.- 2.1.5 Technical Strategies.- 2.2 What Are the Characteristics of Reusable Assets?.- 2.2.1 General Criteria: Quality and Reusability.- 2.2.2 Functional Criteria.- 2.2.3 Technical Criteria.- 2.3 Managing Software Assets.- 2.3.1 Asset Life Circle.- 2.3.2 Organizing Asset Acquisition.- 2.3.3 Make or Buy?.- 2.4 Assets vs Objects.- 2.4.1 OO Is Neither Necessary Nor Sufficient.- 2.4.2 OO Is an 'Enabling' Factor.- 2.4.3 What About Business Objects?.- 3. Reuse Repository.- 3.1 Who Needs a Repository?.- 3.2 Requirements for a Reuse Repository.- 3.2.1 What Is Stored Inside a Repository?.- 3.2.2 Functions of a Repository.- 3.2.3 Non-Functional Requirements.- 3.3 Repositories on the Internet.- 3.4 Tool Categories on the Market.- 3.4.1 Reuse-Specific.- 3.4.2 Repositories.- 3.4.3 Intranet and Groupware Tools.- 3.5 Key Points in the Choice of an Asset Repository.- 4. Reuse Processes.- 4.1 What Processes Do We Need?.- 4.1.1 What Is a Process?.- 4.1.2 Why Are Reuse Processes Necessary?.- 4.1.3 Extending Reuse Boundaries.- 4.1.4 The Producer-Consumer Paradigm.- 4.1.5 Different Ways of Practising Reuse.- 4.1.6 An Overview of Reuse Processes.- 4.1.7 Who Does What?.- 4.2 Starting a Corporate Reuse Programme: The Reuse Introduction Process.- 4.2.1 Should I Go for Reuse?.- 4.2.2 The Software Productivity Consortium Reuse Adoption Process.- 4.3 Practising Reuse: Asset Production and Application Production Processes.- 4.3.1 The REBOOT Process Model.- 4.3.2 Jacobson, Griss and Jonsson Process Model.- 4.3.3 Should I Practise Domain Engineering?.- 4.3.4 Processes in the Field.- 4.3.5 Qualifying and Evaluating Assets.- 4.3.6 Managing Risks When Reusing.- 4.3.7 Advertising Assets.- 4.3.8 Communicating About Reuse.- 4.3.9 Maintaining Assets.- 4.3.10 Managing and Improving Reuse Efficiency.- 4.4 A Summarized Vision on Processes: How Does Reuse Affect Traditional Software Processes?.- 5. Managing Reuse.- 5.1 The Management Issues.- 5.2 To Reuse or Not To Reuse? ­ the Big Question.- 5.3 Reuse for All, and All for Reuse.- 5.4 Adapting the Work Structure.- 5.4.1 Conditioning Factors.- 5.4.2 Key Decisions.- 5.4.3 Final Comments on Work Structure.- 6. Reuse Metrics.- 6.1 General Aspects of a Metrics Programme.- 6.2 A Typical Reuse Metrics Programme.- 6.2.1 Gl.- 6.2.2 G2.- 6.2.3 G3.- 6.2.4 G4.- 6.2.5 G5.- 6.2.6 G6.- 6.2.7 What To Count as Reused?.- 7. Reuse Techniques and Technologies.- 7.1 Rationale.- 7.2 Reuse-Enabling Architectures.- 7.2.1 Three-Tier Architecture.- 7.2.2 Multi-Layered, Web-Enabled Architecture.- 7.2.3 Internet Systems Architectures.- 7.3 Object-Oriented Techniques.- 7.4 Design Patterns.- 7.5 Object-Oriented Frameworks.- 7.6 Component-Based Development.- 7.6.1 Client-Side Components.- 7.6.2 Server-Side Components.- 7.6.3 Internet Components.- 7.6.4 From Component Reuse to Information Reuse.- 7.7. Agent-Based Systems.- 7.8 Comparison of Techniques.- 7.8.1 Developing With Reuse: Which Types of Artefacts Are Reused?.- 7.8.2 Developing for Reuse: Which Phase of the Software Life Cycle Does the Technique Involve?.- 8. Two Major Case Histories.- 9. Two Smaller Case Histories.- 10. Experience Review and Success Factors.- 10.1 The Experience Base.- 10.2 Analysis of Experience.- 10.2.1 Successes and Failures in General.- 10.2.2 Successes in More Detail.- 10.2.3 Failures in More Detail.- 10.3 A Reuse Introduction Decision Sequence.- 10.4 Conclusion.- Acronyms.- Selected Bibliography.- Index 219.