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DbjensenDbjensen 

How to return a list from a class to a trigger

Hello - How can I return a lead list called 'returnedLead' from a class to a trigger. Any assistance would be greatly appreciated. 

Trigger:
if(Trigger.isUpdate){
                   //Passing Trigger.new and Trigger.old to LeadOwnerAssignment class
                    LeadOwnerAssignment.leadChanges(Trigger.new, Trigger.old);
}

Class: 
public class LeadOwnerAssignment {
    
    public static void leadChanges(List<Lead> newLead, List<Lead> oldLead){
        
        List<Lead> returnedLead = new List<Lead>();
        
        //Old Lead Map
        Map<String, String> mapOfOldAffinityType = new Map<String, String>();
        
        for(lead oldLds : oldLead) {
            mapOfOldAffinityType.put(oldLds.Affinity_Type__c, oldLds.LastNameStreetAndZipCode__c);
        }

        for(Lead ld : newLead) {
            if(ld.Affinity_Type__c != mapOfOldAffinityType.get(ld.Affinity_Type__c)){
                returnedLead.add(ld);     
            }
        }  
    }            
}
Best Answer chosen by Dbjensen
Abdul KhatriAbdul Khatri
Here you can get the list of leads

Trigger 
if(Trigger.isUpdate)
{
       //Passing Trigger.new and Trigger.old to LeadOwnerAssignment class
       List<Lead> leadList = LeadOwnerAssignment.leadChanges(Trigger.new, Trigger.old);
}


Class 
public class LeadOwnerAssignment {
    
    public static List<Lead> leadChanges(List<Lead> newLead, List<Lead> oldLead){
        
        List<Lead> returnedLead = new List<Lead>();
        
        //Old Lead Map
        Map<String, String> mapOfOldAffinityType = new Map<String, String>();
        
        for(lead oldLds : oldLead) {
            mapOfOldAffinityType.put(oldLds.Affinity_Type__c, oldLds.LastNameStreetAndZipCode__c);
        }

        for(Lead ld : newLead) {
            if(ld.Affinity_Type__c != mapOfOldAffinityType.get(ld.Affinity_Type__c)){
                returnedLead.add(ld);     
            }
        }
        
         return returnedLead;  
    }            
}


 

All Answers

Abdul KhatriAbdul Khatri
Here you can get the list of leads

Trigger 
if(Trigger.isUpdate)
{
       //Passing Trigger.new and Trigger.old to LeadOwnerAssignment class
       List<Lead> leadList = LeadOwnerAssignment.leadChanges(Trigger.new, Trigger.old);
}


Class 
public class LeadOwnerAssignment {
    
    public static List<Lead> leadChanges(List<Lead> newLead, List<Lead> oldLead){
        
        List<Lead> returnedLead = new List<Lead>();
        
        //Old Lead Map
        Map<String, String> mapOfOldAffinityType = new Map<String, String>();
        
        for(lead oldLds : oldLead) {
            mapOfOldAffinityType.put(oldLds.Affinity_Type__c, oldLds.LastNameStreetAndZipCode__c);
        }

        for(Lead ld : newLead) {
            if(ld.Affinity_Type__c != mapOfOldAffinityType.get(ld.Affinity_Type__c)){
                returnedLead.add(ld);     
            }
        }
        
         return returnedLead;  
    }            
}


 
This was selected as the best answer
Chris EagerChris Eager
Trigger: 
if(Trigger.isUpdate){
                   //Passing Trigger.new and Trigger.old to LeadOwnerAssignment class
                    List<Lead> leadList = LeadOwnerAssignment.leadChanges(Trigger.new, Trigger.old);
}

Class:  
public class LeadOwnerAssignment {
    
    public static List<Lead> leadChanges(List<Lead> newLead, List<Lead> oldLead){
        
        List<Lead> returnedLead = new List<Lead>();
        
        //Old Lead Map
        Map<String, String> mapOfOldAffinityType = new Map<String, String>();
        
        for(lead oldLds : oldLead) {
            mapOfOldAffinityType.put(oldLds.Affinity_Type__c, 
            oldLds.LastNameStreetAndZipCode__c);
        }

        for(Lead ld : newLead) {
            if(ld.Affinity_Type__c != mapOfOldAffinityType.get(ld.Affinity_Type__c)){
                returnedLead.add(ld);     
            }
        } 
      return returnedLead;
    }            
}

 
DbjensenDbjensen
Hi Abdul - thanks so much! This is just what I was looking for. 
DbjensenDbjensen
Hey Chris - Thanks for the response. I really appreciate it.