SanFrancisco Design Patterns:Blueprints for Business Software - Tapa blanda

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IBM's SanFrancisco is a Java-based set of pre-constructed components that help developers quickly assemble server-side business applications. In developing SanFrancisco, IBM's Java developers discovered a wide range of patterns that are invaluable to all Java developers. This book documents them, in-depth. It follows the format used in the groundbreaking book Design Patterns. Beginning with a case study describing a typical set of business requirements for a hypothetical enterprise, successive chapters address each design pattern in turn, using an aspect of the case study to provide a concrete example that motivates the pattern. The patterns fall into five categories: foundational, behavioral, structural, process, and dynamic behavioral patterns. While some of them extend patterns originally identified elsewhere, many are entirely new -- and all of them offer powerful opportunities for more effective development.

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"This book is priceless because it explains why the developers of SanFrancisco designed things the way they did. As such it takes a good hard look at the problems involved in writing flexible business software, and the patterns inherent in the solutions this team came up with." --Martin Fowler

The much-anticipated SanFrancisco Application Business Components product from IBM provides a platform-independent infrastructure and ready-built components for constructing business applications. SanFrancisco is one of largest software projects based on Java technology, providing Common Business Objects that can be used in many different application domains and Core Business Processes that each address a specific application domain. "SanFrancisco(TM) Design Patterns" documents the design patterns identified as part of this ambitious multidomain development effort.

Design patterns are the heart of SanFrancisco. Whether building a business application in SanFrancisco or from scratch, the patterns identified in this book will help you build flexibility, power, and strength into your business applications. This book follows the format established by the seminal "Design Patterns," with a case study providing a business context for patterns running throughout the book. The authors focus on the generic use of these patterns, using SanFrancisco as an example.

With this book as your guide, you will learn how to use and extend these patterns within the context of a business application's requirements. "SanFrancisco(TM) Design Patterns" explains the purpose, design, and implementation of patterns in the following categories:

• Foundational patterns, which provide an underlying structure for all SanFrancisco-based business objects and produce mechanisms for creating business objects, changing behavior, and constructing business processes.
• Behavioral patterns, which describe various methods of incorporating flexible algorithms throughout a business application.
• Structural patterns, which focus on how business information is organized and accessed throughout a framework or application.
• Process patterns, which define how businesses organize and process information.
• Dynamic behavioral patterns, which support the structural and behavioral transformation of business objects throughout their lifecycles. These transformations include the addition and removal of attributes and capabilities (methods).