How does apex work in salesforce

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Uses of Apex class :-

  • In Salesforce, Apex classes are used to implement the actions associated with an object.
  • Apex classes will have specific methods to execute the actions of the object.
  • classes will have constructors to create the objects.

When a developer writes and saves Apex code to the platform, the platform application server first compiles the code into an abstract set of instructions that can be understood by the Apex runtime interpreter, and then saves those instructions as metadata.

Full
Answer

How to set methods in Salesforce apex?

Set Methods

  • add (setElement) Adds an element to the set if it is not already present. …
  • addAll (fromList) Adds all of the elements in the specified list to the set if they are not already present. …
  • addAll (fromSet) Adds all of the elements in the specified set to the set that calls the method if they are not already present.

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How to create batch apex in Salesforce?

Using Batch Apex

  • Start
  • Execute
  • Finish

How to create sample apex trigger in Salesforce?

Apex triggers are viewing, checking & editing only and not for developing any trigger. Condition for a new trigger. → Go to objects. → The select object for which you are going to create triggers. Ex: student. → Go to down the properties of student. → Triggers —> New. Checkout SalesForce Tutorial.

What is test classes in apex Salesforce?

The key points while writing a test class are:

  • You have to start your class with @isTest annotation, then only Salesforce will consider this class as test class.
  • Keep your class as Private, and the best practice is to name your test class as your original Class or trigger Name + ‘Test’.
  • Methods of your test class have to be static, void and testMethod keyword has to be used.

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How do I use Apex code in Salesforce?

1:3039:49Salesforce Apex Tutorial for Beginners – YouTubeYouTubeStart of suggested clipEnd of suggested clipWell apex is a strongly typed object-oriented programming language that allows developers to executeMoreWell apex is a strongly typed object-oriented programming language that allows developers to execute flow and transactional control statements on the salesforce. Servers along with this they can also


What is Apex transaction in Salesforce?

An Apex transaction represents a set of operations that are executed as a single unit. All DML operations in a transaction either complete successfully, or if an error occurs in one operation, the entire transaction is rolled back and no data is committed to the database.


What is Apex jobs in Salesforce?

The Apex Flex queue enables you to submit up to 100 batch jobs for execution. Any jobs that are submitted for execution are in holding status and are placed in the Apex Flex queue. Up to 100 batch jobs can be in the holding status. Jobs are processed first-in first-out—in the order in which they’re submitted.


What is an Apex class in Salesforce?

An Apex class is a template or blueprint from which Apex objects are created. Classes consist of other classes, user-defined methods, variables, exception types, and static initialization code.


What is the purpose of Apex?

Apex enables developers to access the Salesforce platform back-end database and client-server interfaces to create third-party SaaS applications. Apex includes an application programming interface (API) that Salesforce developers can use to access user data on the platform.


What API is used in Apex?

Required Editions and User PermissionsAPI NameProtocolCommunicationConnect REST APIRESTSynchronous (photos are processed asynchronously)Apex REST APIRESTSynchronousApex SOAP APISOAP (WSDL)SynchronousAnalytics REST APIRESTSynchronous7 more rows


How long are apex jobs stored in Salesforce?

From Monitoring the Apex Job Queue: All batch jobs that have completed execution are removed from the batch queue list seven days after completion. (It’s the last sentence).


How do you write an Apex test class?

From Setup, enter Apex Classes in the Quick Find box, then select Apex Classes and click New.In the class editor, add this test class definition, and then click Save. … To run this test and view code coverage information, switch to the Developer Console.In the Developer Console, click Test | New Run.More items…


How do you write a batch class in Apex?

Key PointsTo write a Batch Apex class, your class must implement the Database. Batchable interface and include the following three methods: start() execute() … If your code accesses external objects and is used in batch Apex, use Iterable instead of Database. QueryLocator.The default batch size is 200 record.


When should I use Apex?

Use Apex if you want to:Create Web services.Create email services.Perform complex validation over multiple objects.Create complex business processes that are not supported by workflow.Create custom transactional logic (logic that occurs over the entire transaction, not just with a single record or object).More items…


How do I practice apex in Salesforce?

Apex Best PracticesBulkify your Code.Avoid SOQL Queries or DML statements inside FOR Loops.Bulkify your Helper Methods.Using Collections, Streamlining Queries, and Efficient For Loops.Streamlining Multiple Triggers on the Same Object.Querying Large Data Sets.More items…


Why do we use Apex class in Salesforce?

In Salesforce, Apex classes are used to implement the actions associated with an object. Apex classes will have specific methods to execute the actions of the object. classes will have constructors to create the objects. Individuals who have knowledge of java programming can quickly get a grip over Apex classes.


WHAT IS APEX IN SALESFORCE? (PART 1)

Apex is a strongly typed, object-oriented programming language that allows developers to execute flow and transaction control statements on the Lightning Platform server, in conjunction with calls to the API. Apex is like Java for Salesforce. It uses classes, data types, variables, and if-else statements.


WHAT IS APEX IN SALESFORCE? (PART 1)

Apex is a strongly typed, object-oriented programming language that allows developers to execute flow and transaction control statements on the Lightning Platform server, in conjunction with calls to the API. Apex is like Java for Salesforce. It uses classes, data types, variables, and if-else statements.


What is SOAP API?

Use standard SOAP API calls if you want to add functionality to a composite application that processes only one type of record at a time and does not require any transactional control (such as setting a Savepoint or rolling back changes).


Does Salesforce have prebuilt applications?

In addition, Salesforce provides the ability to customize the prebuilt applications to fit your organization. However, your organization may have complex business processes that are unsupported by the existing functionality.

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