Apex Developer Guide

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
Approval Processing
Authentication
Chatter Answers and Ideas
Use Cases for the CommercePayments Namespace
Connect in Apex
Moderate Chatter Private Messages with Triggers
Data 360 In Apex
DataWeave in Apex
Implementing DataWeave in Apex
Examples of DataWeave in Apex
Limitations of DataWeave in Apex
Moderate Feed Items with Triggers
Experience Cloud Sites
Email
External Services
Flows
Formula Evaluation in Apex
Metadata
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

Note: This release is in preview. Features described here don’t become generally available until the latest general availability date that Salesforce announces for this release. Before then, and where features are noted as beta, pilot, or developer preview, we can’t guarantee general availability within any particular time frame or at all. Make your purchase decisions only on the basis of generally available products and features.

DataWeave in Apex

DataWeave in Apex uses the Mulesoft DataWeave library to read and parse data from one format, transform it, and export it in a different format. You can create DataWeave scripts as metadata and invoke them directly from Apex. Like Apex, DataWeave scripts are run within Salesforce application servers, enforcing the same heap and CPU limits on the executing code.

Enterprise applications often require transformation of data between formats such as CSV, JSON, XML, and Apex objects. DataWeave in Apex complements native Apex support for JSON and XML processing, and makes data transformation easier to code, more scalable, and efficient. Apex developers can focus more on solving business problems and less on addressing the specifics of file formats.

DataWeave is the MuleSoft expression language for accessing, parsing, and transforming data that travels through a Mule application. For detailed information, see DataWeave Overview. 

You don’t have to be a MuleSoft customer or have any specific Salesforce license to use DataWeave in Apex.

Note

The following are some use-cases for DataWeave in Apex.

  • Serializing Apex objects with custom date formats
  • Serializing and deserializing JSON with Apex reserved keywords
  • Performing custom transformations like removing or adding namespaces or removing __c suffixes
  • Parsing and transforming RFC 4180-compliant CSV (Comma-Separated Values) data

You can create a listview for DataWeave resources in your org and view deployed DataWeave scripts within your namespace. From Setup, in the Quick Find box, enter DataWeave, and then select DataWeave Resources. Select the fields that you want to monitor, such as the DataWeave Resource ID, Name, Namespace Prefix, and API Version.