Book Image

Salesforce Platform Enterprise Architecture - Fourth Edition

By : Andrew Fawcett
Book Image

Salesforce Platform Enterprise Architecture - Fourth Edition

By: Andrew Fawcett

Overview of this book

Salesforce makes architecting enterprise grade applications easy and secure – but you'll need guidance to leverage its full capabilities and deliver top-notch products for your customers. This fourth edition brings practical guidance to the table, taking you on a journey through building and shipping enterprise-grade apps. This guide will teach you advanced application architectural design patterns such as separation of concerns, unit testing, and dependency injection. You'll also get to grips with Apex and fflib, create scalable services with Java, Node.js, and other languages using Salesforce Functions and Heroku, and find new ways to test Lightning UIs. These key topics, alongside a new chapter on exploring asynchronous processing features, are unique to this edition. You'll also benefit from an extensive case study based on how the Salesforce Platform delivers solutions. By the end of this Salesforce book, whether you are looking to publish the next amazing application on AppExchange or build packaged applications for your organization, you will be prepared with the latest innovations on the platform.
Table of Contents (23 chapters)
1
Part I: Key Concepts for Application Development
6
Part II: Backend Logic Patterns
11
Part III: Developing the Frontend
14
Part IV: Extending, Scaling, and Testing an Application
21
Other Books You May Enjoy
22
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); 
} 

All examples in this chapter use the CDCL approach to combine Apex Trigger and Domain logic into one class. However, if you are using the...