public static void rollupForAttendee(){
        
        Set<Id> parentAttendeeIds = new Set<Id>();
        if( Trigger.isInsert || Trigger.isUpdate || Trigger.isUndelete ){
            for( rie__Log__c logObj : newLogs ){
                if( logObj.rie__Attendee__c != Null ){
                    parentAttendeeIds.add( logObj.rie__Attendee__c );
                }
            }
        } 
        else if( Trigger.isDelete ) {
            for( rie__Log__c logObj : oldLogs ){
                if( logObj.rie__Attendee__c != Null ){
                    parentAttendeeIds.add( logObj.rie__Attendee__c );
                }
            }    
        }
        
        if( parentAttendeeIds.size() > 0 ){
            
            for( Id registrationId : parentAttendeeIds ) {
                rie__Registration__c parentAttendee = new rie__Registration__c( Id = registrationId ); 
                parentAttendee.rie__Attendee_Counter__c = 0;
                parentAttendee.rie__Attendee_Chat_Counter__c = 0;
                parentAttendee.rie__Attendee_Connect_Counter__c = 0;
                mapParentAttendeesToUpdate.put( parentAttendee.Id, parentAttendee );
            }
            
            List<AggregateResult> aggrList = [ SELECT rie__Attendee__c parentAttendee, 
                                              COUNT(Id) attendee
                                              FROM rie__Log__c
                                              WHERE rie__Attendee__c IN: parentAttendeeIds
                                              GROUP BY rie__Attendee__c ];
            
            for( AggregateResult ag :  aggrList ){
                
                Id parentAttendeeId = (String)ag.get('parentAttendee');
                rie__Registration__c parentAttendee = mapParentAttendeesToUpdate.get( parentAttendeeId );
                
                parentAttendee.rie__Attendee_Counter__c = (Decimal)ag.get( 'attendee' );
                mapParentAttendeesToUpdate.put( parentAttendee.Id, parentAttendee );   
            }
            
            List<AggregateResult> aggrListChat = [ SELECT rie__Attendee__c parentAttendee, 
                                                  COUNT(Id) attendee
                                                  FROM rie__Log__c
                                                  WHERE rie__Attendee__c IN: parentAttendeeIds
                                                  AND rie__Attendee_Chat__c = TRUE
                                                  GROUP BY rie__Attendee__c ];
            
            for( AggregateResult ag :  aggrListChat ){
                
                Id parentAttendeeId = (String)ag.get('parentAttendee');
                rie__Registration__c parentAttendee = mapParentAttendeesToUpdate.get( parentAttendeeId );
                
                parentAttendee.rie__Attendee_Chat_Counter__c = (Decimal)ag.get( 'attendee' );
                mapParentAttendeesToUpdate.put( parentAttendee.Id, parentAttendee );   
            }
            
            List<AggregateResult> aggrListConnect = [ SELECT rie__Attendee__c parentAttendee, 
                                                     COUNT(Id) attendee
                                                     FROM rie__Log__c
                                                     WHERE rie__Attendee__c IN: parentAttendeeIds
                                                     AND rie__Attendee_Connect__c = TRUE
                                                     GROUP BY rie__Attendee__c ];
            
            for( AggregateResult ag :  aggrListConnect ){
                
                Id parentAttendeeId = (String)ag.get('parentAttendee');
                rie__Registration__c parentAttendee = mapParentAttendeesToUpdate.get( parentAttendeeId );
                
                parentAttendee.rie__Attendee_Connect_Counter__c = (Decimal)ag.get( 'attendee' );
                mapParentAttendeesToUpdate.put( parentAttendee.Id, parentAttendee );
            }
        }
    }