Force.com Enterprise Architecture - Second Edition

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 Selector base class

The fflib_SObjectSelector base class contains additional functionality to provide more query consistency and integration with the platform. These apply to the aforementioned selectSObjectsById method as well ...