Apex Developer Guide

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Apex Developer Guide
Release Notes
Getting Started with Apex
Writing Apex
Running Apex
Invoking Apex
Apex Transactions and Governor Limits
Using Salesforce Features with Apex
Actions
Apex Cursors (Beta)
Approval Processing
Authentication
Chatter Answers and Ideas
Use Cases for the CommercePayments Namespace
Connect in Apex
Moderate Chatter Private Messages with Triggers
Data Cloud In Apex
DataWeave in Apex
Moderate Feed Items with Triggers
Experience Cloud Sites
Email
External Services
Flows
Formula Evaluation in Apex
Metadata
Retrieving and Deploying Metadata
Supported Metadata Types
Security Considerations
Testing Metadata Deployments
Permission Set Groups
Platform Cache
Salesforce Knowledge
Salesforce Files
Salesforce Connect
Salesforce Reports and Dashboards API via Apex
Salesforce Sites
Support Classes
Territory Management 2.0
Integration and Apex Utilities
Debugging, Testing, and Deploying Apex
Apex Reference
Appendices
PDF

Metadata

Salesforce uses metadata types and components to represent org configuration and customization. Metadata is used for org settings that admins control, or configuration information applied by installed apps and packages.

Use the classes in the Metadata namespace to access metadata from within Apex code for tasks that include:

  • Customizing app installs or upgrades—During or after an install (or upgrade), your app can create or update metadata to let users configure your app.
  • Customizing apps after installation—After your app is installed, you can use metadata in Apex to let admins configure your app using the UI that your app provides rather than having admins manually use the standard Salesforce setup UI.
  • Securely accessing protected metadata—Update metadata that your app uses internally without exposing these types and components to your users.
  • Creating custom configuration tools—Use metadata in Apex to provide custom tools for admins to customize apps and packages.

Metadata access in Apex is available for Apex classes using API version 40.0 and later.

For more information on metadata types and components, see the Metadata API Developer Guide and the Custom Metadata Types Implementation Guide.