Book Image

Mastering Apex Programming

By : Paul Battisson
5 (1)
Book Image

Mastering Apex Programming

5 (1)
By: Paul Battisson

Overview of this book

As applications built on the Salesforce platform are now a key part of many organizations, developers are shifting focus to Apex, Salesforce’s proprietary programming language. As a Salesforce developer, it is important to understand the range of tools at your disposal, how and when to use them, and best practices for working with Apex. Mastering Apex Programming will help you explore the advanced features of Apex programming and guide you in delivering robust solutions that scale. This book starts by taking you through common Apex mistakes, debugging, exception handling, and testing. You'll then discover different asynchronous Apex programming options and develop custom Apex REST web services. The book shows you how to define and utilize Batch Apex, Queueable Apex, and Scheduled Apex using common scenarios before teaching you how to define, publish, and consume platform events and RESTful endpoints with Apex. Finally, you'll learn how to profile and improve the performance of your Apex application, including architecture trade-offs. With code examples used to facilitate discussion throughout, by the end of the book, you'll have developed the skills needed to build robust and scalable applications in Apex.
Table of Contents (21 chapters)
1
Section 1 – Triggers, Testing, and Security
8
Section 2 – Asynchronous Apex and Apex REST
15
Section 3 – Apex Performance

Summary

In this chapter, we have seen how we can best handle those situations where an error occurs to ensure that we capture the most relevant information and inform the user appropriately.

We started by discussing the different types of exceptions that we could anticipate within our solutions and the ways in which we may want to respond to them. We covered how to correctly capture errors and use the finally block to roll back any changes or work that we did not want to persist.

Following this, we constructed a simple logging utility to allow us to capture and persist errors and logs to the database for review by an administrator or developer at a later point. We reviewed the different use cases for the logging utility as well as how we could capture and persist the state of an Apex class to this for review and to enhance our debugging capabilities.

In the last section of the chapter, we looked at how we can use custom exception types to provide varied exception outputs...