How future method is used in trigger?

How future method is used in trigger?

For example, we can use the future method to make a Web Service callout from an Apex Trigger.

1. Future Annotation:
2. Example: global class MyFutureClass { @future static void myMethod(String a, Integer i) { System.debug(‘Method called with: ‘ + a + ‘ and ‘ + i); // Perform long-running code } }

Can we invoke future method from trigger?

Interviewee: Since you are in batch context, the trigger runs in the same context too, So as soon as the Account records get updated through the batch process or through any future method, the trigger would throw an exception saying “Future method cannot be called from a future or batch method” as a future method …

How to avoid the recursive trigger in apex?

Before calling the Context-specific handler method, check the value of the static variable, and call the method only if the value is false to avoid the Recursive Trigger. These are most of the Apex Trigger Best Practices that we need to follow but there are two more which we ignore most of the time.

What happens after a trigger in Salesforce apex?

After triggers are used to access field values that are set by the system (such as a record’s Id or LastModifiedDate field), and to affect changes in other records, such as logging into an audit table or firing asynchronous events with a queue. The records that fire the after trigger are read-only.

How to invoke apex class via execute anonymous?

You can invoke the Apex class via execute anonymous in the Developer Console as shown below −. Step 1 − Open the Developer Console. Step 2 − Click on Debug. Step 3 − Execute anonymous window will open as shown below. Now, click on the Execute button −. Step 4 − Open the Debug Log when it will appear in the Logs pane.

Where is the web service callout method in apex?

Web service callout method (in this example callWebService (Contact cnt) ) is in the Util class which is getting consumed in apex after update trigger. When the above trigger is fired it will throw an error as “ Callout from triggers are currently not supported. ” To resolve this you need to make a small change in your Apex code.