Jitendra Zaa's Blog

Lightning Web Component Event Handling – Pub Sub

How to handle events in Lightning Web Components between nested and non nested Components

It is very common to come across use case of communicating between Lightning Web Components.

If you are not interested on code explanation and directly want to jump on live demo , check this playground.

Communicate between Nested Lightning Web Components

This is one of most simplest and common use case, where parent LWC wants to react on event produced by child LWC.

In above image, Model 3 is child (nested component) of Tesla.

Introduction to Mulesoft with Example – Alpharetta Developer Group Meet

posted by Jitendra on June 17, 2019June 21, 2019 under category Mulesoft and tagged as Alpharetta Dev Group, Mulesoft, Mulesoft 4 with Leave a comment

Slides and Video from Alpharetta Developer group meet – Loading data in Salesforce using Mulesoft 4

Last week, we organized Salesforce Developer group meet in Alpharetta and topic was Introduction to Mulesoft & Live Demo.

We covered,

History Of Mulesoft
What is API Led Connectivity
Terminologies used in Mulesoft
How Mulesoft can be used and Deployed
Resources on getting free training and
Live Demo , followed by
Q&A

If you don’t want to miss fun and learning sessions like these, make sure to join our Salesforce developer group here.

Below is slide from group meet

Introduction to mulesoft – Alpharetta Developer Group Meet from Jitendra Zaa

Framework to fix – Governor Limit of 100 jobs in Flex Queue

posted by Jitendra on April 25, 2019May 6, 2019 under category Salesforce and tagged as Batch Apex, Framework, Governor Limits, Org9 with 7 Comments

How to design an application in Salesforce to handle governor limit error of maximum 100 jobs in Flex Queue

Recently , I inherited an Org with huge customization , which enqueue 100+ Batch Jobs in few scenario. Now, don’t ask me why ?

I remember, few years back, Salesforce had limit of 5 Apex Batch that can be executed at a time, but we had expectation and demand !!! Salesforce introduced Flex queue and we can have 100 Batch apex waiting to be executed, still we are not happy. After all, human is wanting animal.

After 100 Batch apex, all jobs were failing with error System.AsyncException You have exceeded the limit of 100 Jobs in the flex queue. As I explained my life previously in this post, I had to fix this issue as well.

Right way to fix it was to analyze existing code, perform code review, why do we need even customization etc.. However, time was crucial and I had to do something quickly.

Below framework was used to fix the issue

Video – Large Data Volume – How Lightning Platform Query Optimizer Works

posted by Jitendra on March 5, 2019March 5, 2019 under category Salesforce and tagged as Large Data Volumes, LDV, Video Tutorial with 1 Comment

Best Practices of handling Large Data Volume (LDV) in Salesforce

Last year I presented how Query Optimizer works in Kitchner developer group. Found myself coming back to slide multiple times, so thought its good idea to post all information in this post.

Getting Started with Lightning Web Component

posted by Jitendra on March 3, 2019March 3, 2019 under category Lightning, Salesforce and tagged as Lightning Web Component, LWC, Platform Cache with Leave a comment

Before starting with Lightning Web Component, I would suggest to read this introduction post first.

If you enjoy watching video then you might enjoy below video where I conducted Live coding explaining basics of Lightning Web Component.

In this post, we are going to Show loading image on initial load of LWC. In background we would be calling Apex class to take decision if loading image should be hided or redirect user to some other page.

Cannot change both ‘UnitPrice’ and ‘TotalPrice’ in update call

posted by Jitendra on February 24, 2019February 24, 2019 under category Salesforce with 1 Comment

Trigger to change UnitPrice in Salesforce

Recently, I was in need to update Sales Price (Unit Price) for OpportunityLineItem using Trigger. I wrote a small trigger on before insert and before update of OpportunityLineItem to update Sales Price.

It worked fine on insert however on update, even if user clicked on update button without changing any value, we were getting error Cannot change both ‘UnitPrice’ and ‘TotalPrice’ in update call.

Its Standard Salesforce behavior and seems in background platform tries to perform some calculation for Total Price which is Quantity * Sales Price. I was not able to get it working on before update. However, below two approach worked :

Use Process builder to compute Unit Price as per formula. Process builder field update works after trigger so it went through.
In after update trigger, create list of Opportunity Product to be updates and make explicit update call for all records which qualified for update.

Enterprise Territory Management – Key Notes

posted by Jitendra on February 11, 2019February 24, 2019 under category Salesforce and tagged as Apex Sharing, Forecast, Territory Management with Leave a comment

How to use Apex based sharing to share opportunity using Territories

Enterprise Territory management is used to share Account and its related opportunity and Cases.
Account can have multiple Territories.
User can have multiple Territories
Opportunity can have only 1 Territory. Think about it – If Opportunity allowed to have multiple Territory, how revenue would be split between multiple Territory and what would be business rules ?
Territory enables “My Territories” and “My Team’s Territory” filter in Account and Opportunity list View.
While creating Territory, we can decide access to Account, Opportunity and Case. Depending on OWD, access can be private, read only and read write.
Enterprise Territory Management does not support overlay forecast unlike Roles. However we can create report on Opportunity split object.
Overlay forecast (Revenue sharing) is not supported because Opportunity can have only one territory and therefore only 1 revenue maker.
Maximum Territory that can be defined is around 99k unlike maximum role 10k.
Custom Field (but not lookup) can be created in Territory2 object.
Territory related list appears on user and Account records.
You cannot create lookup to Territory objects.
Territory to Opportunity can be assigned using Apex class plugin

Enable Territory based Forecast

Mark user as “Allowed Forecast”
Add user as Territory Team member
Add user as Forecast Manager in Territory

Apex Based Sharing of Opportunity using Territory

For Apex based sharing, we use user of public group Id to share record. If we want to share Opportunity using Territory then there is quick code for that. If we click on manual share button on Opportunity, it will show an option to choose between user, public group, territory and territory with subordinates.

There is no clear documentation, but what I found that when we share using Territory, Salesforce internally creates public group for that territory and assigns that public group to Opportunity.

So, first step is to find public group created for territory. Below code showcase how it can be done.

References :

OpportunityShare object reference
Understanding Sharing
Sharing records using Apex

Introduction to HTML Web Components

posted by Jitendra on February 3, 2019February 3, 2019 under category Salesforce and tagged as HTML 5, Lightning Web Component, Web Components with 3 Comments

Pillars of HTML Vanilla Web Components

Modern browsers have become so advanced and powerful that there is almost no or minimal need of Javascript libraries these days. There was time when web developers rely heavily on frameworks like JQuery, Angular or React. Same for Salesforce, when it launched Aura framework in 2014.

In last 5 years, web browsers have evolved so much that we need to revisit and check ourselves that do we really need libraries or frameworks for every small functionalities ? Considering rich feature set browsers, Salesforce already revisited aura framework and decided that it’s time to make it more lightweight and use native browser capabilities as much as possible. Welcome Lightning Web Components !!! Before we jump into ocean of Lightning Web Components, it’s important to understand what is supported by browsers natively ? Out of many features supported by modern browsers, one of most important one is Web Component.

Below are 4 pillars of Web Components

Templates
Custom Element
Shadow DOM
Imports

Docker Cheat sheet

posted by Jitendra on January 25, 2019March 21, 2019 under category Salesforce and tagged as container, docker, MySQL, pgadmin, phpmyadmin with Leave a comment

Frequently used docker commands and cheatsheet

Refer this url to get official cheat sheet for docker commands. Below are some of frequently used commands by me

Find all docker images installed on system

docker images

Find container id of currently running dockers

docker ps

Stop or kill running container

docker kill <container id from above command>

Defining pipe delimited separator in Mulesoft 3 & 4

posted by Jitendra on January 24, 2019January 24, 2019 under category Mulesoft and tagged as Integration, Mulesoft 3, Mulesoft 4 with 1 Comment

How to use Pipe delimiter as separator in Mulesoft 3 and 4

Mulesoft 3

As discussed in previous post, to use pipe operator as separator. Navigate to Reader Configuration of Transformation message component