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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

Implementing Domain Trigger logic


The most common initial use case for a Domain class is to encapsulate the Apex Trigger logic. In order to enable this, a small Apex Trigger is required to invoke the triggerHandler method. This will route the various Trigger events to the appropriate methods in the Domain class (as shown in the preceding screenshot), avoiding the need for the usual if/else logic around Trigger.isXXXX variables.

The name of this trigger can be anything, though it makes sense to match it with that of the corresponding Domain class. Once this is in place, you can ignore it and focus on implementing the Domain class methods as follows:

trigger Seasons on Season__c (
  after delete, after insert, after update, 
  before delete, before insert, before update) {
  fflib_SObjectDomain.triggerHandler(Seasons.class);
}

Note

At the time of writing this book, the base class did not support undelete events from Apex Triggers. If this is required, you can consider extending the base class...

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