What is a future method?

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.

How do you call a future method?

Future method syntax

  1. Use @future annotation before the method declaration.
  2. Future methods must be static methods, and can only return a void type.
  3. The specified parameters must be primitive data types, arrays of primitive data types, or collections of primitive data types.

What are the different methods in Test class?

Methods of your test class have to be static, void and testMethod keyword has to be used. Prepare your test data which needs to be existing before your actual test runs. There are multiple techniques of creating test data now a days, for example, setup method, static resources etc.

Can we call future method from batch class?

Interviewee: No you can’t, because Calling a future method is not allowed in the Batch Jobs.

Can we call future method inside future method?

Use future method to put callout in future method to make a callout. Limitations of Future method: You cannot call one future method from another method.

Can we call Queueable from future method?

You can pass Array of objects to Queueable interface, but in future method it is not supported. You can chain the jobs in the Queueable only. In execution cycle, you cannot call from one future method to another future method. Its achieved inqueueable class by using the Chaining Jobs.

What is test Gettandardpricebookid?

This method returns only test-context results, even if it’s annotated with @IsTest(SeeAllData=true) . getStandardPricebookId() Returns the ID of the standard price book in the organization.

What is SeeAllData true in Salesforce?

For Apex code saved using Salesforce API version 24.0 and later, use the @isTest(SeeAllData=true) annotation to grant test classes and individual test methods access to all data in the organization. The @isTest(SeeAllData=true) annotation is used to open up data access when applied at the class or method level.

Can we call Queueable from batch method?

Interviewer: Can I call Queueable from a batch? Interviewee: Yes, But you’re limited to just one System. enqueueJob call per execute in the Database. Batchable class.

How many future methods can you call?

You can call up to 250000 future methods per 24 hours. This is in conjunction with all types of asynchronous methods like batch apex.

Can we call future from future?

You cannot call another future method from a future method. As per Salesforce documentation, You cannot call a method annotated with future from a method that also has the future annotation. Nor can you call a trigger from an annotated method that calls another annotated method.

What is difference between future method and Queueable?

Differences between Future and Queueable Apex: Future will never use to work on SObjects or object types. 2. When using the future method we cannot monitor the jobs which are in process. 3.