refactored for the sake of flexibility

README.md

@@ -1,3 +1,26 @@
 # tscottdev-trigger-framework
 
 I reference this framework from time to time and thought it might be handy to create a repo for [Tony Scott's](https://github.com/tscottdev) 2013 code recipe, [Trigger Pattern for Tidy, Streamlined, Bulkified Triggers](https://developer.secure.force.com/cookbook/recipe/trigger-pattern-for-tidy-streamlined-bulkified-triggers).
+
+Basic usage:
+
+```apex
+class ObjectHandler implements ITrigger {
+    public bulkBefore() {
+        if (Trigger.isDelete) { /* do some bulk stuff before delete: collect additional data,  */ }
+    }
+    public bulkAfter() {}
+    public beforeInsert(SObject so) { /* do some ops with individual records (no SOQL or DML recommended! */ }
+    public beforeUpdate(SObject oldSo, SObject so) {}
+    public beforeDelete(SObject so) {}
+    public afterInsert(SObject so) {}
+    public afterUpdate(SObject oldSo, SObject so) {}
+    public afterDelete(SObject so) {}
+    public andFinally() { /* any post processing */ }
+}
+
+trigger ObjectTrigger on SObject (after delete, after insert, after update, before delete, before insert, before update)
+{
+	TriggerFactory.execute(new ObjectHandler());
+}
+```

example/triggers/AccountTrigger.trigger

@@ -1,4 +1,4 @@
 trigger AccountTrigger on Account (after delete, after insert, after update, before delete, before insert, before update)
 {
-	TriggerFactory.createHandler(Account.sObjectType);
+	TriggerFactory.execute(new AccountHandler());
 }

src/classes/TriggerFactory.cls

@@ -5,34 +5,12 @@
  */
 public with sharing class TriggerFactory
 {
-	/**
-	 * Public static method to create and execute a trigger handler
-	 *
-	 * Arguments:	Schema.sObjectType soType - Object type to process (SObject.sObjectType)
-	 *
-	 * Throws a TriggerException if no handler has been coded.
-	 */
-	public static void createHandler(Schema.sObjectType soType)
-	{
-		// Get a handler appropriate to the object being processed
-		ITrigger handler = getHandler(soType);
-
-		// Make sure we have a handler registered, new handlers must be registered in the getHandler method.
-		if (handler == null)
-		{
-			throw new TriggerException('No Trigger Handler registered for Object Type: ' + soType);
-		}
-
-		// Execute the handler to fulfil the trigger
-		execute(handler);
-	}
-
 	/**
 	 * private static method to control the execution of the handler
 	 *
 	 * Arguments:	ITrigger handler - A Trigger Handler to execute
 	 */	
-	private static void execute(ITrigger handler)
+	public static void execute(ITrigger handler)
 	{
 		// Before Trigger
 		if (Trigger.isBefore)
@@ -99,22 +77,4 @@ public with sharing class TriggerFactory
 		// Perform any post processing
 		handler.andFinally();
 	}
-
-	/**
-	 * private static method to get the appropriate handler for the object type.
-	 * Modify this method to add any additional handlers.
-	 *
-	 * Arguments:	Schema.sObjectType soType - Object type tolocate (SObject.sObjectType)
-	 *
-	 * Returns:		ITrigger - A trigger handler if one exists or null.
-	 */
-	private static ITrigger getHandler(Schema.sObjectType soType)
-	{
-		if (soType == Account.sObjectType)
-		{
-			return new AccountHandler();
-		}
-
-		return null;
-	}
 }