Episode 20 - Trigger Frameworks in Salesforce
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This document discusses trigger frameworks in Salesforce and their benefits. It provides an overview of trigger execution order and common patterns for writing trigger frameworks, including the trigger handler and interface-based patterns. The document demonstrates examples using these patterns. Trigger frameworks provide benefits like consistent execution, preventing recursion, improved testability and maintainability. Choosing the right framework depends on factors like complexity, extensibility and code reusability. Resources for learning more about trigger frameworks are also provided.
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Episode 20 - Trigger Frameworks in Salesforce
- 1. Path to Code Begin Your Salesforce Coding Adventure
- 2. Episode 20 Trigger Frameworks in Salesforce
- 3. • Enterprise Solutions Architect • Global Community Speaker Jigar Shah @jigarshah189
- 4. Agenda • Need for Trigger Frameworks • Design Patterns for Trigger Frameworks • Benefits for Trigger Frameworks • Choosing the right Trigger Framework • Q&A
- 5. Some Housekeeping Rules… • Mute your mic • Keep adding questions in Zoom Q&A Window • No questions are silly! • Questions will be answered in the last 15 mins of this session
- 6. Apex Triggers • Automatic execution of Apex code responding to Database operations Insert, Update, Delete, Undelete Before / After a record save • Most Standard and All Custom Objects
- 7. Order of Execution 1. Loads the original record from the database 2. Loads the new record field values from a request and overwrites old values 3. System Validations 4. Custom Validation Rules 5. Before Triggers 6. Duplicate Rules 7. Saves the record to the database but not committed. Record ID is generated 8. After Triggers 9. Assignment Rules execution 10. Auto-response Rules execution 11. Workflow Rules execution 12. Execute Processes 13. Execute Flows 14. Executes Escalation Rules 15. Executes Entitlement Rules 16. Update roll-up summary fields 17. Criteria based sharing evaluation 18. Commits all DML operations to the database 19. Executes post commit logic of sending emails
- 8. Demo Use Case Create Task for any Opportunity when it is inserted or updated with a stage of “Closed Won”. The Task’s Subject must be set to “Follow Up Test Task”
- 9. Demo 1 Triggers with Business Logic
- 10. Why Trigger Frameworks? Inconsistent orchestration for Apex trigger logic Increased complexity of unit testing Code maintenance is complex and difficult Difficult for disparate developers to work together on a single code base
- 11. Trigger Handler Pattern sObject <sObject>Trigger <sObject>TriggerHandler Business Logic 1 Business Logic N One Trigger per sObject Delegator
- 12. Demo 2 Trigger Handler Framework
- 13. Interface based Trigger Framework sObject <sObject>Trigger <sObject>TriggerHandler Business Logic ITriggerHandler TriggerDispatcher run (ITriggerHandler handler) implements Interface calls calls Dynamic Binding
- 14. Demo 3 Interface based Trigger Framework
- 15. Benefits of Trigger Frameworks Consistent way of writing and executing triggers Predictable order of execution with a single trigger per object Prevent recursive trigger execution Promotes code maintainability and easy unit testing Cohesive disparate teams with better collaboration
- 16. Choosing the Right Trigger Framework Features Trigger Handler Interface Based Complexity Simple Complex 1 Trigger per sObject *Partially Yes Extensible No Yes Code Reusability Low High Recursion Control No Yes
- 17. Resources Lightweight Apex Trigger Framework by Chris Aldridge (Blog) Minimal SFDC Trigger Framework by Kevin O'Hara (Blog) Tidy Streamlined Bulkified Triggers (Dev Cookbook) Trigger Frameworks in Salesforce (YouTube)
- 19. Q & A
- 20. Thank You
- 21. Subscribe