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What is future annotation in Salesforce?
Use the future annotation to identify methods that are executed asynchronously. When you specify future , the method executes when Salesforce has available resources. For example, you can use the future annotation when making an asynchronous Web service callout to an external service.
Can we call future method from future method in Salesforce?
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 call the future method in Salesforce?
Future method callouts using @future (callout=true) To allow callout from the future method annotation needs an extra parameter (callout=true) to indicate that callouts are allowed.
When to use the @ future annotation in Salesforce?
Note: Technically, you use the @future annotation to identify methods that run asynchronously. However, because “methods identified with the @future annotation” is laborious, they are commonly referred to as “future methods” and that’s how we’ll reference them for the remainder of this module.
What can a future method do in apex?
A future method runs in the background, asynchronously. You can call a future method for executing long-running operations, such as callouts to external Web services or any operation you’d like to run in its own thread, on its own time.
Which is an example of a future method?
Example: Long-running operations can be a web service call, bulk DML Operations. Handles the Mixed DML operation provide the ability to make long-running callout from Trigger. Run in its own thread All the future methods should have “@future” annotation. All future methods should be defined as static.