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Mastering Apex Programming

You're reading from   Mastering Apex Programming A Salesforce developer's guide to learn advanced techniques and programming best practices for building robust and scalable enterprise-grade applications

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Product type Paperback
Published in Nov 2023
Publisher Packt
ISBN-13 9781837638352
Length 394 pages
Edition 2nd Edition
Languages
Concepts
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Author (1):
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Paul Battisson Paul Battisson
Author Profile Icon Paul Battisson
Paul Battisson
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Toc

Table of Contents (28) Chapters Close

Preface 1. Section 1: Triggers, Testing, and Security
2. Chapter 1: Common Apex Mistakes FREE CHAPTER 3. Chapter 2: Debugging Apex 4. Chapter 3: Triggers and Managing Trigger Execution 5. Chapter 4: Exceptions and Exception Handling 6. Chapter 5: Testing Apex Code 7. Chapter 6: Secure Apex Programming 8. Section 2: Asynchronous Apex
9. Chapter 7: Utilizing Future Methods 10. Chapter 8: Working with Batch Apex 11. Chapter 9: Working with Queueable Apex 12. Chapter 10: Scheduling Apex Jobs 13. Section 3: Integrations
14. Chapter 11: Integrating with Salesforce 15. Chapter 12: Using Platform Events 16. Chapter 13: Apex and Flow 17. Chapter 14: Apex REST and Custom Web Services 18. Chapter 15: Outbound Integrations – REST 19. Chapter 16: Outbound Integrations – SOAP 20. Chapter 17: DataWeave in Apex 21. Section 4: Apex Performance
22. Chapter 18: Performance and the Salesforce Governor Limits 23. Chapter 19: Performance Profiling 24. Chapter 20: Improving Apex Performance 25. Chapter 21: Performance and Application Architectures 26. Index 27. Other Books You May Enjoy

Script structure

DataWeave reference and playground

We won’t be covering a detailed breakdown of the DataWeave language in this book. If you want to learn more about DataWeave, MuleSoft provides a DataWeave playground at https://dataweave.mulesoft.com/learn/playground, which you can use to see how data can be transformed and manipulated by DataWeave functions. MuleSoft also has a detailed language guide, the current version of which can be found at https://docs.mulesoft.com/dataweave/2.4/dataweave-language-guide.

A DataWeave script is a file that’s structured in the following way:

  • A header detailing the DataWeave version to use, the data type of the input for the script (for example, application/json), the type of data to output from the script (for example, application/xml), and, optionally, any additional imports, constants, or function definitions
  • A delimiter, ---
  • The script body or payload to perform the transformation

For example, say...

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