Book Image

Mastering Application Development with

By : Kevin J. Poorman
Book Image

Mastering Application Development with

By: Kevin J. Poorman

Overview of this book is an extremely powerful, scalable, and secure cloud platform, delivering a complete technology stack, ranging from databases and security to workflow and the user interface. With's cloud platform, you can build any business application and run it on your servers. The book will help you enhance your skillset and develop complex applications using It gets you started with a quick refresher of's development tools and methodologies, and moves to an in-depth discussion of triggers, bulkification, DML order of operations, and trigger frameworks. Next, you will learn to use batchable and schedulable interfaces to process massive amounts of information asynchronously. You will also be introduced to Salesforce Lightning and cover components—including backend (apex) controllers, frontend (JavaScript) controllers, events, and attributes—in detail. Moving on, the book will focus on testing various apex components: what to test, when to write the tests, and—most importantly—how to test. Next, you will develop a changeset and use it to migrate your code from one org to another, and learn what other tools are out there for deploying metadata. You will also use command-line tools to authenticate and access the Rest sObject API and the Bulk sObject API; additionally, you will write a custom Rest endpoint, and learn how to structure a project so that multiple developers can work independently of each other without causing metadata conflicts. Finally, you will take an in-depth look at the overarching best practices for architecture (structure) and engineering (code) applications on the platform.
Table of Contents (16 chapters)
Mastering Application Development with
About the Author
About the Reviewers

An overview of triggers

We are all familiar with the strange triangular hammer, which our doctor hits us with in the knee, making our leg kick out involuntarily. The key to reflexes is that they are automatic and programmed deep inside us. So deep, in fact, that at runtime (err, during life), it's a really big deal when our reflexes stop working. Likewise, Salesforce triggers work on a deep system level. Unlike human reflexes, however, we can program Salesforce triggers. Developers get to decide what happens when the reflexes are triggered.

Context is king

Triggers run in a well-defined but developer chosen context. We select the object, the Data manipulation language (DML) statement to act on, and even the before and after status of the DML call. DML refers to a set of keywords: insert, update, upsert, delete, and undelete. Triggers are, therefore, one of the most powerful tools in an architect's toolbox. Triggers are phenomenally flexible but with that phenomenal power comes the potential...