You're reading from Salesforce Platform Enterprise Architecture- fourth edition A must-read guide to help you architect and deliver packaged applications for enterprise needs

Product type Paperback

Published in Mar 2023

Publisher Packt

ISBN-13 9781804619773

Length 712 pages

Edition 4th Edition

Languages

Java

Tools

Salesforce

Concepts

Solution Architecture

Author (1):

Andrew Fawcett

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Table of Contents (23) Chapters

Preface

1. Part I: Key Concepts for Application Development

2. Building and Publishing Your Application FREE CHAPTER

3. Leveraging Platform Features

4. Application Storage

5. Apex Execution and Separation of Concerns

6. Part II: Backend Logic Patterns

7. Application Service Layer

8. Application Domain Layer

9. Application Selector Layer

10. Additional Languages, Compute, and Data Services

11. Part III: Developing the Frontend

12. Building User Interfaces

13. User Interfaces and the Lightning Component Framework

14. Part IV: Extending, Scaling, and Testing an Application

15. Providing Integration and Extensibility

16. Asynchronous Processing and Big Data Volumes

17. Unit Testing

18. Source Control and Continuous Integration

19. Integrating with External Services

20. Adding AI with Einstein

21. Other Books You May Enjoy

22. Index

Application Service Layer

If your application were considered a living organism, the Service layer would be its beating heart. Regardless of how the environment and the things that interact with it change over time, it must remain strong and be able to adapt. In this chapter, we begin our journey with the three coding patterns – Service, Domain, and Selector – that were introduced in Chapter 4, Apex Execution and Separation of Concerns.

In this chapter, we will review the Service layer pattern as set out by Martin Fowler and then review how this has been applied to the Salesforce Platform in Apex, describing design guidelines born from the separation of concerns we defined in the previous chapter.

One concern of this layer is interacting with the database; a later chapter will cover querying this in more detail. This chapter will focus on updating the database and introducing a new pattern, Unit of Work, which helps make your code more streamlined and bulkified...