APEX関連
Using Promise for Apex Server-Side request in Lightning Component
- Jan
- 06
- Posted by Lin
- Posted in APEX, Lightnint Component, Salesforce
In Lightning Components, each communication with Apex Server-Side is handled as a Javascript async request, and the callback you set is called after the server-side action is completed. A server-side action can return any JSON object, such as sObject or a map of name-value pairs. The followoing sample code shows how a server-call works in […]
read moreKISS principle for apex code with List and Map in Salesforce
- Mar
- 17
- Posted by Lin
- Posted in APEX, Salesforce
Here are some KISS (Keep it simple, stupid) principles for cleaning our apex code with List and Map in Salesforce, as Linus Torvalds said: “Talk is cheap. Show me the code”, let me show you as below: Initialize Map Normal KISS principle Select(SOQL) to Map Normal KISS principle Initialize List Normal KISS principle Map keys […]
read moreBatch Apex running mode (parallel and series) and how to maintain state in it
- Jan
- 09
- Posted by Lin
- Posted in APEX, Salesforce
In my early post, I’d shared about how to write a Schedulable Batch Apex in Salesforce, and I’ll show you how transactions run in batch Apex and how to maintain their state across these transactions in this post. Batch Apex running mode (parallel / series) As we know, each execution of a batch Apex job […]
read moreInstantiating an Apex class based on dynamic string name with Type class
- Sep
- 30
- Posted by Lin
- Posted in APEX, Salesforce
Somtimes we need to instantiate a Apex class by dynamic value in Salesforce, which can make our program more modular and more readable, such as the below case : 1. Each Contact has its socail fields : “Type__c” and “AccessToken__c” 2. Needs to request its profile via socail api in Apex First we need to […]
read moreWriting a Schedulable Batch Apex in Salesforce
- Sep
- 26
- Posted by Lin
- Posted in APEX, Salesforce
To use batch Apex, you have to create an Apex class that implements interface Database.Batchable in Salesforce, like the following sample code: Execute batch Then you can use Database.executebatch method to execute it. Schedule Apex job To schedule your batch Apex to run at regular intervals, you also need an Apex class that implements interface […]
read moreUsing Aggregate SOQL queries/results in Batch Apex
- Sep
- 26
- Posted by Lin
- Posted in APEX, Salesforce
In previous post, we had created a schedulable batch apex that implements Database.Batchable<sObject> in Salesforce, but if you want to use SOQL having aggregate functions like SUM(), MAX(), COUNT() on results grouped by “GROUP BY” clause in start execution, changing to interface Database.Batchable<AggregateResult> isn’t a workable way, because it fails with the below compile error […]
read moreZip attachments only with Apex in Salesforce
- Sep
- 07
- Posted by Lin
- Posted in APEX, Salesforce, Visualforce
Before this post (about 2 years ago), I’d shared a post that is about how to zip attachments with JSZip and Apex in Salesforce, and recently I found a more simple way to do that thing, which is only using an Apex library named “Zippex” ( view on Github). Here is the outline of my […]
read moreTo fix “portal account owner must have a role” Error in Salesforce Community Unit Test
- Aug
- 29
- Posted by Lin
- Posted in APEX, Salesforce, Unit Tests
In Salesforce, if you’re trying to run Unit Test with a Non-Role user, which includes part of creating Portal / Community User test data, the following error will be occured, that is because the portal account’s owner does not have a role to be assigned. System.DmlException: Insert failed. First exception on row 0; first error: […]
read moreTo fix MIXED_DML_OPERATION error(setup and non-setup objects) in Salesforce
- Jul
- 21
- Posted by Lin
- Posted in APEX, Salesforce
The following error will be occured if you’re trying to perform DML operation on both setup and non-setup objects in the same transation. ` MIXED_DML_OPERATION, DML operation on setup object is not permitted after you have updated a non-setup object (or vice versa): CustomObject__c, original object: User: [] ` Here is the sample code that […]
read moreCatching and customizing Apexpages Messages in Apex
- Jul
- 08
- Posted by Lin
- Posted in APEX, Visualforce
As we know, apex:pageMessages tag can be used to display all messages that were generated for all components on the current page, presented using the Salesforce styling, as the following source code we use: Controller Class(CommunitiesSelfRegController) Visualforce Page(CommunitiesSelfReg) But how do we customizing the styling of messages, if those were generated from Salesforce Standard components, […]
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