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Chapter - 9 Apex Triggers >

Handling Recursion In Triggers

Handling Recursion In Triggers

What You’ll Learn

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What Is Recursion In Triggers? 

Recursion in Triggers happens when a Trigger is called repeatedly, resulting in an infinite loop.

To counter recursion, we need to:

  1. Create another class called RecursiveTriggerHandler.
  2. Make use of “Static” variables.


trigger BranchTrigger on Branch__c(before update) {
            if (RecursiveTriggerHandler.isFirstRun) {
                RecursiveTriggerHandler.isFirstRun = false;
                // Call Helper Class method 

The first instance of the Trigger is run and if this variable is true, the logic in the Helper Class executes.

Other Best Practices for writing triggers:

  1. Always create only one Trigger per object.
  2. Create logic-less Triggers and use Helper Class Design Pattern in which the helper class will contain all the logic.
  3. Create context-specific handler methods in the Helper Class.
  4. Bifurcate “insert” and “update” Trigger logic contexts and create two different methods in the Trigger’s helper class.

 trigger PositonTrigger on Position__c(after insert, after update) {
            if (Trigger.isAfter && Trigger.isInsert) {
            } else if (Trigger.isAfter && Trigger.isUpdate) {
                PositionTriggerHandler.handleAfterUpdate(Trigger.new, Trigger.old);

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