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Force.com Enterprise Architecture

You're reading from   Force.com Enterprise Architecture Blend industry best practices to architect and deliver packaged Force.com applications that cater to enterprise business needs

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Product type Paperback
Published in Sep 2014
Publisher
ISBN-13 9781782172994
Length 402 pages
Edition 1st 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 (13) 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. Providing Integration and Extensibility 10. Asynchronous Processing and Big Data Volumes 11. Source Control and Continuous Integration Index

Implementing the standard query logic


The previous Selector usage example required a cast of the list returned to a list of Race__c objects, which is not ideal. To improve this, you can easily add a new method to the class to provide a more specific version of the base class method, as follows:

public List<Race__c> selectById(Set<Id> raceIds)
{
  return (List<Race__c>) selectSObjectsById(raceIds);
}

Thus, the usage code now looks like this:

List<Race__c> races = new RacesSelector().selectById(raceIds); 

Standard features of the selectSObjectsById method

In addition to forming the field list used in the SOQL query, the base class and the selectSObjectById method used also provide additional functionality that would normally have to be replicated each time this section outlines these features. Some of these are also available to custom Selector methods you write.

Tip

You can, of course, extend the standard features of this base class further. Perhaps there is something you...

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