The Selector class template

A Selector class, like the Domain class, utilizes inheritance to gain some standard functionality. In this case, the base class, delivered through the FinancialForce.com Enterprise Apex Patterns library, fflib_SObjectSelector, is used to reduce the coding overhead in performing queries, adding some standard behaviors, and supporting best practices. These will be discussed in further detail throughout this chapter.

A basic example of a Selector class for querying Races is as follows:

public inherited sharing class RacesSelector 
   extends fflib_SObjectSelector { 
 
    public List<Schema.SObjectField> getSObjectFieldList() { 
       return new List<Schema.SObjectField> { 
           Race__c.Id, 
           Race__c.Name, 
           Race__c.Status__c, 
           Race__c.Season__c, 
           Race__c.FastestLapBy__c, 
           Race__c...