Apex Reference Guide

Apex Reference Guide
Release Notes
Apex DML Operations
ApexPages Namespace
AppLauncher Namespace
Approval Namespace
Auth Namespace
Cache Namespace
Canvas Namespace
ChatterAnswers Namespace
CommerceBuyGrp Namespace
CommerceExtension Namespace
CommerceOrders Namespace
CommercePayments Namespace
CommerceTax Namespace
commonserviceexcellence Namespace
ComplianceMgmt Namespace
Compression Namespace
ConnectApi Namespace
Context Namespace
Database Namespace
Batchable Interface
BatchableContext Interface
Cursor Class
CursorFetchResult Class
DeletedRecord Class
DeleteResult Class
DMLOptions Class
DmlOptions.AssignmentRuleHeader Class
DMLOptions.DuplicateRuleHeader Class
DmlOptions.EmailHeader Class
DuplicateError Class
EmptyRecycleBinResult Class
Error Class
GetDeletedResult Class
GetUpdatedResult Class
LeadConvert Class
LeadConvertResult Class
MergeResult Class
PaginationCursor Class
QueryLocator Class
QueryLocatorIterator Class
QueryLocatorIterator Methods
QueryOptions Class
QueryOptionsBuilder Class
SaveResult Class
UndeleteResult Class
UpsertResult Class
Datacloud Namespace
DataRetrieval Namespace
DataSource Namespace
DataWeave Namespace
Dom Namespace
embeddedai Namespace
EventBus Namespace
ExternalService Namespace
Flow Namespace
Flowtesting Namespace
flowuiruntime Namespace
FormulaEval Namespace
disputemanagement Namespace
fsccashflow Namespace
fsccomplaintmanagement Namespace
fschousehold Namespace
fscserviceprocesses Namespace
fscwmgen Namespace
industriespersonalizedfinance Namespace
Functions Namespace
ise_bots_apex Namespace
IssueCreditMemo Namespace
ind_mfg_sample_mgmt_apex Namespace
industriesNlpSvc
IndustriesDigitalLending Namespace
Invocable Namespace
InvoiceWriteOff Namespace
IsvPartners Namespace
KbManagement Namespace
LxScheduler Namespace
Messaging Namespace
Metadata Namespace
PlaceQuote Namespace
Pref_center Namespace
Process Namespace
QuickAction Namespace
renew_assets_summary Namespace
Reports Namespace
RevSignaling Namespace
RevSalesTrxn Namespace
RichMessaging Namespace
RulesAppln Namespace
runtime_industries_cpq Namespace
runtime_industries_insurance Namespace
Schema Namespace
Search Namespace
setup_flow_performance Namespace
Sfc Namespace
Sfdc_Checkout Namespace
Sfdc_Enablement Namespace
sfdc_surveys Namespace
sfdw Namespace
sfsqlquery Namespace
Site Namespace
Slack Namespace
Support Namespace
System Namespace
TerritoryMgmt Namespace
TxnSecurity Namespace
UserProvisioning Namespace
VisualEditor Namespace
Wave Namespace
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.

QueryLocatorIterator Class

Represents an iterator over a query locator record set.

Namespace

Database

Example

This sample shows how to obtain an iterator for a query locator, which contains five accounts. This sample calls hasNext and next to get each record in the collection.

1// Get a query locator
2Database.QueryLocator q = Database.getQueryLocator(
3    [SELECT Name FROM Account LIMIT 5]);
4// Get an iterator
5Database.QueryLocatorIterator it =  q.iterator();
6 
7// Iterate over the records
8while (it.hasNext())
9{
10    Account a = (Account)it.next();
11    System.debug(a);
12}

QueryLocatorIterator Methods

The following are methods for QueryLocatorIterator. All are instance methods.

hasNext()

Returns true if there are one or more records remaining in the collection; otherwise, returns false.

Signature

public Boolean hasNext()

Return Value

Type: Boolean

next()

Advances the iterator to the next sObject record and returns the sObject.

Signature

public sObject next()

Return Value

Type: sObject

Usage

Because the return value is the generic sObject type, you must cast it if using a more specific type. For example:
1Account a = (Account)myIterator.next();

Example

1Account a = (Account)myIterator.next();