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Force.com Enterprise Architecture

You're reading from   Force.com Enterprise Architecture Architect and deliver packaged Force.com applications that cater to enterprise business needs

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Product type Paperback
Published in Mar 2017
Publisher Packt
ISBN-13 9781786463685
Length 504 pages
Edition 2nd Edition
Languages
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Author (1):
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Andrew Fawcett Andrew Fawcett
Author Profile Icon Andrew Fawcett
Andrew Fawcett
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Toc

Table of Contents (15) Chapters Close

Preface 1. Building, Publishing, and Supporting Your Application FREE CHAPTER 2. Leveraging Platform Features 3. Application Storage 4. Apex Execution and Separation of Concerns 5. Application Service Layer 6. Application Domain Layer 7. Application Selector Layer 8. User Interface 9. Lightning 10. Providing Integration and Extensibility 11. Asynchronous Processing and Big Data Volumes 12. Unit Testing 13. Source Control and Continuous Integration Index

Services calling services


In the previous chapter, I described a reuse use case around a FormulaForce application feature that awards championship points to contestants. We imagined the first release of the application providing a Custom Button only on the Contestant detail page and then the second release also providing the same button but on the Race detail page.

In this part of the chapter, we are going to implement the respective service methods, emulating this development cycle and, in turn, demonstrating an approach to call between Service layer methods, passing the Unit Of Work correctly.

First, let's look at the initial requirement for a button on the Contestant detail page; the method in the ContestantService class looks like the following:

publicstaticvoidawardChampionshipPoints(Set<Id>contestantIds) {
  fflib_SObjectUnitOfWorkuow = Application.UnitOfWork.newInstance();

  // Apply championship points to given contestants
  Map<Integer, ChampionshipPoint__mdt>pointsByTrackPosition...
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