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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

Introducing the Domain layer pattern


The following is Martin Fowler's definition of the Domain layer (http://martinfowler.com/eaaCatalog/domainModel.html):

"An object model of the domain that incorporates both behavior and data".

Like the Service layer, this pattern adds a further layer of Separation of Concerns and factoring of the application code, which helps manage and scale a code base as it grows.

"At its worst business logic can be very complex. Rules and logic describe many different cases and slants of behavior, and it's this complexity that objects were designed to work with. A Domain Model creates a web of interconnected objects, where each object represents some meaningful individual, whether as large as a corporation or as small as a single line on an order form."

Martin's reference to objects in the preceding quote is mainly aimed at objects created from instantiating classes that are coded in an object-orientated programming language such as Java or .NET. In these platforms, such...

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