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Force.com Enterprise Architecture

You're reading from   Force.com Enterprise Architecture Blend industry best practices to architect and deliver packaged Force.com applications that cater to enterprise business needs

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Product type Paperback
Published in Sep 2014
Publisher
ISBN-13 9781782172994
Length 402 pages
Edition 1st Edition
Languages
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Author (1):
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Andrew Fawcett Andrew Fawcett
Author Profile Icon Andrew Fawcett
Andrew Fawcett
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Toc

Table of Contents (13) Chapters Close

Preface 1. Building, Publishing, and Supporting Your Application FREE CHAPTER 2. Leveraging Platform Features 3. Application Storage 4. Apex Execution and Separation of Concerns 5. Application Service Layer 6. Application Domain Layer 7. Application Selector Layer 8. User Interface 9. Providing Integration and Extensibility 10. Asynchronous Processing and Big Data Volumes 11. Source Control and Continuous Integration Index

Contract Driven Development


If you have a large piece of functionality to develop, with a complex Service layer and Visualforce client logic, it can be an advantage to decouple these two streams of development activity so that developers can continue in parallel, meeting up sometime in the future to combine efforts.

An approach to this is sometimes referred to as Contract Driven Development. This is where there is an agreement on a contract (or service definition) between the two development streams before they start their respective developments. Naturally, the contract can be adjusted over time, but having a solid starting point will lead to a smoother parallel development activity.

This type of development can be applied by implementing a small factory pattern within the Service layer class. The main methods on the service class are defined as normal, but their internal implementation can be routed to respective inner classes to provide an initial dummy implementation of the service, which...

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