Apex Reference Guide

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Apex Reference Guide
Release Notes
Apex DML Operations
ApexPages Namespace
AppLauncher Namespace
Approval Namespace
Auth Namespace
Cache Namespace
Canvas Namespace
ChatterAnswers Namespace
CommerceExtension Namespace
CommerceOrders Namespace
CommercePayments Namespace
CommerceTax Namespace
Compression Namespace
ConnectApi Namespace
Context Namespace
Database Namespace
Datacloud Namespace
DataRetrieval Namespace
DataSource Namespace
DataWeave Namespace
Dom Namespace
EventBus Namespace
ExternalService Namespace
Flow Namespace
FormulaEval Namespace
fsccashflow Namespace
Functions Namespace
industriesNlpSvc
IndustriesDigitalLending Namespace
Invocable Namespace
IsvPartners Namespace
KbManagement Namespace
LxScheduler Namespace
Messaging Namespace
Metadata Namespace
PlaceQuote Namespace
Pref_center Namespace
Process Namespace
QuickAction Namespace
Reports Namespace
RevSalesTrxn Namespace
RichMessaging Namespace
Salesforce_Backup Namespace
Schema Namespace
Search Namespace
Sfc Namespace
ContentDownloadContext Enum
ContentDownloadHandler Class
ContentDownloadHandler Properties
ContentDownloadHandlerFactory Interface
Sfdc_Checkout Namespace
Sfdc_Enablement Namespace
sfdc_surveys Namespace
Site Namespace
Slack Namespace
Support Namespace
System Namespace
TerritoryMgmt Namespace
TxnSecurity Namespace
UserProvisioning Namespace
VisualEditor Namespace
Wave Namespace
Appendices
PDF

ContentDownloadHandler Class

Use ContentDownloadHandler to define a custom download handler that controls how content is downloaded.

Namespace

Sfc

ContentDownloadHandler Properties

The following are properties for ContentDownloadHandler.

downloadErrorMessage

A customized error message explaining why the download isn’t allowed.

Signature

public String downloadErrorMessage {get; set;}

Property Value

Type: String

This message is used if a redirectUrl is not provided. If the download is not allowed, Salesforce will throw a ContentCustomizedDownloadException exception that contains the downloadErrorMessage.

isDownloadAllowed

Indicates whether or not download is allowed.

Signature

public Boolean isDownloadAllowed {get; set;}

Property Value

Type: Boolean

redirectUrl

The URL the user is redirected to when the download action isn't available, for applying Information Rights Management (IRM) control, virus scanning, or other behavior.

Signature

public String redirectUrl {get; set;}

Property Value

Type: String

The URL must be a valid relative URL. For example, the redirect can be a custom Visualforce page such as “/apex/IRMControl”. URLs with no path, such as “www.domain.com”, results in an InvalidParameterValueException.