Questions tagged [iteration]

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9 votes
2 answers
1k views

Why aren't iterators in batch jobs lazy-loaded?

I have a batch job that needs to callout to an external web service and retrieve a variable number of records. Seems like a perfect use-case to have an iterator which performs the callouts until there ...
Greg Grinberg's user avatar
9 votes
1 answer
16k views

Nested aura:iteration to dynamically get fields

I am trying to dynamically create a data table with two arrays (SObject array and a String array which has field API name). The two arrays are Contact[] and String[], where String[] consists of ["Id",...
Justin's user avatar
  • 337
8 votes
1 answer
9k views

How to implement on scroll action in lightning to show next few list of records

I want to render many(about 1000) components and I am displaying them through aura:iteration in another aura:iteration. This is causing me performance issues. I want to display only 10 records at an ...
Sarang's user avatar
  • 2,560
11 votes
2 answers
13k views

How to iterate a Map in Aura

I have a aura map attribute defined in my component file as below <aura:attribute name="FilesNameMap" type="Map"> But i am not able to understand how to iterate this in the component file as ...
Sharan Desai's user avatar
8 votes
4 answers
8k views

How to use <force:inputField> and <force:outputField> inside an <aura:iteration>

Here @Peter describes a very cool way to use a <force:inputField ... /> together with <aura:attribute name="YourObjectType" type="YourObjectType" default="{ ...
Uwe Heim's user avatar
  • 28.3k
11 votes
1 answer
775 views

Comparing Apex Loops and why Iterators are dramatically slower than for loops?

I decided to use iterators to work with collections in a functional style at some point in development, but immediately noticed a CPU time performance drawdown. So I decided to do a simple performance ...
Oleh Berehovskyi's user avatar
9 votes
1 answer
7k views

Stop Batch Process

Good day everyone, I have created a batch process. Let say I have thousands of records to process. Now what i want is when there is an error encounter or some problem found in the data during the ...
Hope's user avatar
  • 1,243
3 votes
1 answer
536 views

This map cannot be used in an iteration because the keys cannot be sorted

In my apex code I am adding some value into map. And I am trying to loop through the map on VF page using apex:repeat but I am getting an error that This map cannot be used in an iteration because ...
Anu's user avatar
  • 3,817
3 votes
0 answers
2k views

ui:inputCheckbox and aura:iteration: value binding

I am currently writing a lightning component made of a table of elements that can be selected (or not) using a ui:inputCheckbox. So the way I do is fetching the data from APEX controller during the ...
Simonp's user avatar
  • 1,892
2 votes
3 answers
2k views

Iterate over queried lookup fields

Example: Opportunity Opp = [SELECT Name, Status__c, Zone__c, Invoice__r.Amount__c, Invoice__r.Date__c FROM Opportunity WHERE ID ='006a12nlfoenlew']; I need to iterate over each field and see if the ...
Avinash's user avatar
  • 2,081
1 vote
2 answers
902 views

Passing List<WrapperClass> as a parameter from Visualforce to Lightning and to iterate over the List<WrapperClass>

This is my VF code, which runs on onclick <script> function func(data) { $Lightning.use("c:testingFromVFtoLightningApp", function(){ $Lightning.createComponent("c:...
Narendra Nimmana's user avatar
1 vote
0 answers
348 views

How can I append new data rows to an existing data extension with predefined properties and columns?

There is data-extension-row-update and data-extension-row-create, but nothing like data-extension-row-append. Say I have an existing data extension I retrieve via import ET_Client myClient = ...
Andreas L.'s user avatar
1 vote
1 answer
3k views

Get Data from batch iterable

Good day everyone, Maybe this question is basic for everyone but I'm having a problem with it, so I'm asking for help. I have created a BATCH ITERABLE . global with sharing class batchProcessor ...
Hope's user avatar
  • 1,243
0 votes
1 answer
3k views

How to fetch the value inside a list item(not having an id since created dynamically) in lightning?

I am creating a a list using aura:iteration: <aura:iteration var="pf" items="{!v.family}" indexVar="ind"> <li class="slds-dropdown__item"> <a href="javascript:void(0);" role="...
Ayan Sengupta's user avatar