Attempting to pass current record's ID from trigger to Class

Question

Code novice here! I am trying to pass the OpportunityContactRole's Opportunity ID from a trigger to a class to a Flow. I would happily use a Process Builder to trigger the Flow but OCR's are yet to run by a PB.

The trigger will run whenever an OCR is added or edited. It should pass the OCR's Opportunity Id to the Class which should in turn pass the OCR's OpportunityId to a flow.

As you can see below, I haven't got very far, but here's what I have pieced together by reading other posts and code

Trigger:

Trigger Default on OpportunityContactRole after insert, after update){
 AddPrimaryContactToOpportunity.runFlow();
}

Class:

public class AddPrimaryContactToOpportunity { 
    public static void runFlow() {
        OpportunityContactRole currentRecord;

        public OpportunityContactRole getcurrentRecord(){
            return currentRecord;
        }

        Flow.Interview flow = new Flow.Interview.Update_Primary_Contact_lookup(new map<String,Object> 
                                                    {'recordId' => currentRecord.OpportunityId});     
        flow.start();
}

Appreciate any help here!

Edit - trigger syntax

Answer 1

So the issue I see here is that calling a flow is not a bulkified process, but to get you a little further, here is you code reworked:

public class AddPrimaryContactToOpportunity { 
    public static void runFlow() {

        //I admit, this is not bulkified
        for(OpportunityContactRole ocr : Trigger.new)
        {
            Flow.Interview flow = new Flow.Interview.Update_Primary_Contact_lookup(new map<String,Object> 
                                                        {'recordId' => ocr.OpportunityId});     
            flow.start();
        }
}

I would also review the governor limits for Flows and see if your business process needs to be reworked https://developer.salesforce.com/docs/atlas.en-us.212.0.salesforce_vpm_guide.meta/salesforce_vpm_guide/vpm_admin_flow_limits.htm

Answer 2

If anyone needs this in the future, here's the code:

Trigger

Trigger OppContactRoleTrigger on OpportunityContactRole (after insert, after update){
AddPrimaryContactToOpportunity.runFlow();
}

Class

public class AddPrimaryContactToOpportunity { 
public static void runFlow() {

    for(OpportunityContactRole ocr : (List<OpportunityContactRole>) Trigger.new){
        Flow.Interview flow = new Flow.Interview.Update_Primary_Contact_lookup(new map<String,Object> 
                                                    {'recordId' => ocr.OpportunityId});     
        flow.start();
    }
}

Test Class

@isTest
public class TestOppContactRoleTrigger {
static testMethod void insertAllRecords() {
    // Create Account
    Account acc                = new Account();      
    acc.Name                   = 'Test Acc';
    insert acc;

    // Create Contact
    Contact con                = new Contact();
    con.LastName               = 'Lasttest';
    insert con;

    // Create Opportunity
    Opportunity opp            = new Opportunity();
    opp.Name                   = 'Test Opp';
    opp.AccountId              = acc.id;
    opp.StageName              = 'Prospecting';
    opp.CloseDate              = System.today() + 5;
    insert opp;

    // Create OpportunityContactRole
    OpportunityContactRole ocr = new OpportunityContactRole();
    ocr.OpportunityId          = opp.id;
    ocr.ContactId              = con.id;
    ocr.isPrimary              = TRUE;
    insert ocr;
}

}