Introduction to Apex Triggers
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Triggers are procedural code that automatically execute in response to database events like record inserts, updates, or deletes. When a record is saved, various processes are run including validation rules, workflow rules, and triggers. Triggers allow developers to perform complex calculations and automatically create related records in a way that standard tools like workflow cannot. Best practice is to use triggers only when necessary since they are harder to maintain than declarative tools. Developers should thoroughly test trigger code and have at least 75% code coverage before deploying to production.
![How to Deploy to Production?
• Make sure your code passes the tests & test coverage
• Create an “Outbound Change Set” and add your updates to it
• Push the Outbound Change Set to your Production Environment
• Accept the Inbound Change Set in your Production Environment.
• Setup → Deploy → Inbound Change Sets → [Change Set] → Deploy](https://image.slidesharecdn.com/maghroorimerrettintroductiontotriggers-131218125431-phpapp01/85/Introduction-to-Apex-Triggers-25-320.jpg)
Introduction to Apex Triggers
- 1. Introduction to Apex Triggers Arming the Dangerous Iman Maghroori, Principal Sales Engineer @IMaghroori Doug Merrett, Principal Architect @justinbeiber
- 2. Safe harbor Safe harbor statement under the Private Securities Litigation Reform Act of 1995: This presentation may contain forward-looking statements that involve risks, uncertainties, and assumptions. If any such uncertainties materialize or if any of the assumptions proves incorrect, the results of salesforce.com, inc. could differ materially from the results expressed or implied by the forward-looking statements we make. All statements other than statements of historical fact could be deemed forward-looking, including any projections of product or service availability, subscriber growth, earnings, revenues, or other financial items and any statements regarding strategies or plans of management for future operations, statements of belief, any statements concerning new, planned, or upgraded services or technology developments and customer contracts or use of our services. The risks and uncertainties referred to above include – but are not limited to – risks associated with developing and delivering new functionality for our service, new products and services, our new business model, our past operating losses, possible fluctuations in our operating results and rate of growth, interruptions or delays in our Web hosting, breach of our security measures, the outcome of any litigation, risks associated with completed and any possible mergers and acquisitions, the immature market in which we operate, our relatively limited operating history, our ability to expand, retain, and motivate our employees and manage our growth, new releases of our service and successful customer deployment, our limited history reselling non-salesforce.com products, and utilization and selling to larger enterprise customers. Further information on potential factors that could affect the financial results of salesforce.com, inc. is included in our annual report on Form 10-K for the most recent fiscal year and in our quarterly report on Form 10-Q for the most recent fiscal quarter. These documents and others containing important disclosures are available on the SEC Filings section of the Investor Information section of our Web site. Any unreleased services or features referenced in this or other presentations, press releases or public statements are not currently available and may not be delivered on time or at all. Customers who purchase our services should make the purchase decisions based upon features that are currently available. Salesforce.com, inc. assumes no obligation and does not intend to update these forward-looking statements.
- 3. Iman Maghroori Principal Sales Engineer @IMaghroori
- 4. Doug Merrett Principal Architect – Northern Europe @justinbeiber
- 5. Here is the Plan What is a Trigger? When / Why Trigger Deconstruction Tools Resources Q&A
- 6. SURVEY: RAISE YOUR HAND IF YOU’VE… Created a Custom Field? Created a Workflow/Approval rules? Written any code before? Written Apex code? Written a Trigger before?
- 7. What is a Trigger?
- 8. What is a Trigger? “…is procedural code that is automatically executed in response to certain events in a database…” - Wikipedia
- 9. What is a Trigger? “ …custom code that fires when a record is created, updated or deleted.” -Iman Maghroori
- 10. What Happens When You Hit “Save”?
- 11. What Happens When You Hit “Save”? 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. Old values are overwritten System Validation Rules Apex (before) triggers Custom Validation Rules Record saved to DB (not committed) Record reloaded from DB Apex (after) triggers Assignment Rules Auto-Response Rules Workflow Rules Escalation Rules Rollup Summary Formulas updated Database Commit Post-commit logic (Sending emails)
- 13. When Should You Use Triggers? When all other options fail Don’t write code if you don’t have to Easier to maintain Easier to change Faster to deploy
- 14. Workflow Can… Update Fields Assign Tasks Send Emails Send Outbound Messages (Integrations)
- 15. Workflow Cannot… Create Other Records Automatically create child records Complex Calculations Calculate total revenue from child accounts Automatically Submit Records for Approval Delete Records
- 16. Apex: The Programming Language of Force.com Object-oriented language Java-like syntax 6 Billion+ Lines of Apex
- 17. Why Apex? Runs in the Cloud Integrated to Your Data Lots of prebuilt capability Testing Framework Backward Compatibility
- 18. The Force.com Platform is a Multi-Tenant Environment
- 22. Mark the Jet as Booked Trigger
- 23. Test Your Code!
- 24. 75% Minimum Code Coverage Before You Deploy We check for the %, you should check for all the possible use cases.
- 25. How to Deploy to Production? • Make sure your code passes the tests & test coverage • Create an “Outbound Change Set” and add your updates to it • Push the Outbound Change Set to your Production Environment • Accept the Inbound Change Set in your Production Environment. • Setup → Deploy → Inbound Change Sets → [Change Set] → Deploy
- 26. Next Steps to Level Up • Developer Environment • Apex Workbook • To Learn More
- 27. Where Can I Go for Help? • • • • • • • Developer.force.com Salesforce.com Training / Certifications Code Share Developer Community Apex Guide Security Information Help & Training Take it to the Next Level: Professional Services
- 28. Any Questions?