Slaesforce FAQ

how to use apex in salesforce

by Dr. Jerrod Lemke Published 2 years ago Updated 2 years ago
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Apex Developer Guide

  • Getting Started with Apex Learn about the Apex development lifecycle. ...
  • Writing Apex Apex is like Java for Salesforce. ...
  • Running Apex You can access many features of the Salesforce user interface programmatically in Apex, and you can integrate with external SOAP and REST Web services. ...

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From Setup, enter Apex Classes in the Quick Find box, then select Apex Classes. See Manage Apex Classes. A trigger is Apex code that executes before or after specific data manipulation language (DML) events occur, such as before object records are inserted into the database, or after records have been deleted.

Full Answer

How long does it take to learn apex for Salesforce?

Salesforce is the cloud-based CRM system that enables organizations to achieve a 360-degree view of customers. For beginners, it may take three to six months to learn Salesforce. The time span includes training and certification.

How to create batch apex in Salesforce?

Using Batch Apex

  • Start
  • Execute
  • Finish

How to set and list 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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What is apex trigger in Salesforce?

  • isExecuting : It returns true, if the current apex code is trigger.
  • isBefore : It returns true, if the code inside trigger context is executed before the record is saved.
  • isAfter : It returns true, if the code inside trigger context is executed after the record is saved.

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How do I run an Apex code in Salesforce?

Executing Anonymous Apex CodeClick Debug | Open Execute Anonymous Window to open the Enter Apex Code window.Enter the code you want to run in the Enter Apex Code window or click. ... Execute the code: ... If you selected Open Log, the log automatically opens in the Log Inspector.More items...

When should Apex be used in Salesforce?

When Should We use Apex? Apex allows its developers to create complex CRM applications that provide access to the Salesforce database and client-server interfaces to create a third-party SaaS application. It also allows customizing pre-built applications according to complex business requirements.

What is Apex function in Salesforce?

Apex is a strongly typed, object-oriented programming language that allows developers to execute flow and transaction control statements on Salesforce servers in conjunction with calls to the API.

What is 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 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

Is Apex easy to learn?

Learning Apex will not be easy but you can do it. Persevere! It is a journey that will make you smarter and more desirable on the job market. The use of the above 4 resources combined with the 2 tools and 3 attitudes will bring triumph to your clutch.

What are apex methods?

In Apex, all primitive data type arguments, such as Integer or String, are passed into methods by value. This fact means that any changes to the arguments exist only within the scope of the method. When the method returns, the changes to the arguments are lost.

How do you call a class in Apex?

Log in to Salesforce Org → Setup → Build → Develop → Click 'Apex Class' → Click On “New” button → Paste the “Code for Apex Class” → Click On “Quick Save”. Note: Firstly, the Apex Class code should be executed as we are calling it from Trigger. The below-mentioned figure will explain to you in detail.

How do you call a method in Apex?

To call the apex method in the lightning web component, First, we have to create the apex class and add the @AuraEnabled method at the first line, i.e., before starting the method. To call it from Wire Service, the method should be cacheable. Hence, add cacheable=true in @AuraEnabled.

What is an apex trigger?

Apex triggers within Salesforce are designed to help you automate certain tasks. Apex triggers allow you to perform custom actions before and after events in Salesforce. These events can include things such as data insertions, updates to existing data, or deletions.

How do I start an Apex class in Salesforce?

To create a class in salesforce go to Setup -> Build -> Develop -> Apex Class and click on NEW button and create class there. now we will create below call there. Above class is to create/insert new account. This is a simple example to create an Apex class.

How do I compile an apex class?

Navigate to Setup ->Build -> Develop-> Apex Classes. Click the link “Compile All Classes”. This will compile all the classes in your organization. After recompilation, the trigger started working as usual again.

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.

What is Apex in Salesforce?

What is Apex? Apex is a strongly typed, object-oriented programming language that allows developers to execute flow and transaction control statements on Salesforce servers in conjunction with calls to the API.

What is Apex based on?

Apex is based on familiar Java idioms, such as variable and expression syntax, block and conditional statement syntax, loop syntax, object and array notation. Where Apex introduces new elements, it uses syntax and semantics that are easy to understand and encourage efficient use of the Lightning Platform.

What is Apex language?

Apex is a strongly typed language that uses direct references to schema objects such as object and field names. It fails quickly at compile time if any references are invalid. It stores all custom field, object, and class dependencies in metadata to ensure that they are not deleted while required by active Apex code.

Is Apex a multitenant?

Hosted. Apex is interpreted, executed, and controlled entirely by the Lightning Platform. Multitenant aware. Like the rest of the Lightning Platform, Apex runs in a multitenant environment. So, the Apex runtime engine is designed to guard closely against runaway code, preventing it from monopolizing shared resources.

What is Apex in Salesforce?

Apex is a strongly typed, object-oriented programming language that allows developers to execute flow and transaction control statements on the Salesforce Platform server, in conjunction with calls to the API.

How to run Apex code?

Apex code runs in atomic transactions. Debugging, Testing, and Deploying Apex. Develop your Apex code in a sandbox and debug it with the Developer Console and debug logs. Unit-test your code, then distribute it to customers using packages. Apex Reference.

What are the constructs of Apex?

Like other object-oriented programming languages, these are some of the language constructs that Apex supports: Classes, interfaces, properties, and collections (including arrays). Object and array notation. Expressions, variables, and constants.

What are the benefits of Apex classes?

One of the benefits of Apex classes is code reuse. Class methods can be called by triggers and other classes. The following tutorial walks you through saving an example class in your organization, using this class to send emails, and inspecting debug logs.

Why is Apex multitenant?

Multitenant aware—Because Apex runs in a multitenant platform, it guards closely against runaway code by enforcing limits, which prevent code from monopolizing shared resources. Integrated with the database—It is straightforward to access and manipulate records.

What Is Code?

Code is the language that humans use to talk to computers. We use code to write a precise set of instructions for performing a specific action. Think of code like a recipe. Each ingredient and instruction needs to be exact so that the dish turns out as you anticipated.

Where Is Apex Code Stored?

Where do I start, you ask? First things first, we need to figure out where we store our code. Code is stored in files. These files can be local (on your PC or Mac), in the cloud (your Salesforce org), or they can be saved locally and synced automatically to the cloud. How cool is that?

Writing Pseudocode

The most important part of any project you participate in as a Salesforce Admin is planning. Planning helps you to understand the needs of your customers, organize your own thoughts, and predict issues that you may encounter while developing the application.

Code Commenting

As an admin, have you ever seen a custom field that has no description? Unless that field has a very clear, descriptive name, its purpose may not be obvious. In code, comments describe the purpose of a block of code (one or more lines of code).

Warning

Be careful—Transaction Security is a powerful feature. An incorrect Login Event policy that uses Block as its real-time action locks you out of your org. To prevent this from happening in an org you care about, create a new Trailhead Playground for this module.

Create a Policy That Uses Apex

Condition Builder is powerful, but it doesn’t support all complex use cases, such as branching logic, querying for data, or looping over the queried data. In those types of cases, you use Apex classes to define the conditions a Transaction Security policy triggers.

Edit the Apex Class

Let’s add the Apex code that implements your use case. Don’t worry, you don’t need to actually write the code, we provide it and explain the important parts.

Understand the Apex Code

This is a plain-language explanation of the Apex code in the PreventLargeDataExportEventCondition class. While you’re not required to have Apex experience, it helps if you have some general programming knowledge.

What's Next?

Now that you’ve practiced creating policies that track report usage in your org, check out the other events you can track, such as list view usage and logins. The Transaction Security world is fun and exciting, so go forth and monitor!

Get Ready for the Hands-on Challenge

In the hands-on challenge, you create a Transaction Security policy using Apex. This is the code you use for the challenge. The challenge then asks you to make a few more changes to this code.

Hands-on Challenge

You’ll be completing this challenge in your own hands-on org. Click Launch to get started, or click the name of your org to choose a different one.

Request

Approval.ProcessSubmitRequest class provides the way to submit approval request (s).

Unlock

Once a record has been approved, we can unlock it through Approval.ProcessWorkitemRequest Approval.unlock ().

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