If you are familiar with object-oriented languages like Java or C#, Apex may be the language you already almost know. Apex is the cloud-based programming language used on the Salesforce1 Platform to take your enterprise applications to the next level. In this webinar, get an introduction to how Apex is similar to other languages, how you can start coding in Apex with just a web browser, and an overview of the many functions Apex can perform for your applications and users. Key Takeaways Programmers familiar with object-oriented languages will be able to learn Apex easily Apex can perform a wide range of functions from serving as a controller for Visualforce pages to scheduled tasks in the background.

1. Introduction to Apex
for Programmers
March 27, 2014

2. #forcewebinar
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Speakers
Joshua
Birk
Developer Evangelist
@joshbirk
LeeAnne
Templeman
Developer Evangelist
@leeanndroid

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Follow Developer Force for the Latest News
@forcedotcom / #forcewebinar
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Developer Force
Developer Force Group
+Developer Force – Force.com Community

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Have Questions?
§ We have an expert support team at the ready to answer your questions
during the webinar.
§ Ask your questions via the GoToWebinar Questions Pane.
§ The speaker(s) will chose top questions to answer live at the end of the
webinar.
§ Please post your questions as we go along!
§ Only post your question once; we’ll get to it as we go down the list.

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Introduction to Apex
§ What is Apex?
§ Developing in your browser
§ Apex Controllers
§ Apex Triggers
§ Other Apex Use Cases

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Declarative Apps

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Declarative and Programmatic
Declarative Programmatic
Visualforce Pages
Visualforce Components
Apex Controllers
Apex Triggers
Metadata API
REST API
Bulk API
Workflows
Validation Rules
Approval Processes
Objects
Fields
Relationships
Page Layouts
Record Types
User
Interface
Business
Logic
Data
Model

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Apex

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Introduction to Apex
Chapter 1:
§ Object-Oriented Language
§ Dot Notation Syntax
§ Developed, Compiled and Deployed in the Cloud
§ “First Class” Citizen on the Platform

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Every Object, Every Field: Apex and Visualforce Enabled
Visualforce Pages
Visualforce Components
Apex Controllers
Apex Triggers
Custom UI
Custom Logic

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Apex Class Structure
Chapter 1:
public with sharing class myControllerExtension implements Util {
private final Account acct;
public Contact newContact {get; set;}
public myControllerExtension(ApexPages.StandardController stdController) {
this.acct = (Account)stdController.getRecord();
}
public PageReference associateNewContact(Id cid) {
newContact = [SELECT Id, Account from Contact WHERE Id =: cid LIMIT 1];
newContact.Account = acct;
update newContact;
}
}
Class and Interface based
Scoped Variables
Inline SOQL
Inline DML
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Developer Console
• Browser Based
• Create and Edit Classes
• Create and Edit Triggers
• Run Unit Tests
• Review Debug Logs

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Apex Controllers
• Logic for User Interfaces
• Custom Controllers or Extensions
• Transport via:
• Viewstate
• JavaScript

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Interacting with Apex
Annotated Apex methods exposed to JavaScript
Visualforce Forms
Visualforce component bound to an Apex Method
JavaScript Remoting

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Apex Triggers
§ Event Based Logic
§ Associated with Object Types
§ Before or After:
§ Insert
§ Update
§ Delete
§ Undelete

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Controlling Flow
trigger LineItemTrigger on Line_Item__c (before insert,
before update) {
//separate before and after
if(Trigger.isBefore) {
//separate events
if(Trigger.isInsert) {
System.debug(‘BEFORE INSERT’);
DelegateClass.performLogic(Trigger.new);

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Controlling Flow
trigger LineItemTrigger on Line_Item__c (before insert,
before update) {
//separate before and after
if(Trigger.isBefore) {
//separate events
if(Trigger.isInsert) {
System.debug(‘BEFORE INSERT’);
DelegateClass.performLogic(Trigger.new);

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Static Flags
public with sharing class AccUpdatesControl {
// This class is used to set flag to prevent multiple calls
public static boolean calledOnce = false;
public static boolean ProdUpdateTrigger = false;
}

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Chatter Triggers
trigger AddRegexTrigger on Blacklisted_Word__c (before insert,
before update) {
for (Blacklisted_Word__c f : trigger.new)
{
if(f.Custom_Expression__c != NULL)
{
f.Word__c = '';
f.Match_Whole_Words_Only__c = false;
f.RegexValue__c = f.Custom_Expression__c;
}
}
}

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Scheduled Apex

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Schedulable Interface
global with sharing class WarehouseUtil implements Schedulable
{
//General constructor
global WarehouseUtil() {}
//Scheduled execute
global void execute(SchedulableContext ctx) {
//Use static method for checking dated invoices
WarehouseUtil.checkForDatedInvoices();
}

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Schedulable Interface
System.schedule('testSchedule','0 0 13 * * ?',
new WarehouseUtil());
Via Apex
Via Web UI

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Batch Apex

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Batchable Interface
global with sharing class WarehouseUtil
implements Database.Batchable<sObject> {
//Batch execute interface
global Database.QueryLocator start(Database.BatchableContext B
//Start on next context
}
global void execute(Database.BatchableContext BC,
List<sObject> scop
//Execute on current scope
}
global void finish(Database.BatchableContext BC) {
//Finish and clean up context
}

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Apex Endpoints

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Apex REST
@RestResource(urlMapping='/CaseManagement/v1/*')
global with sharing class CaseMgmtService
{
@HttpPost
global static String attachPic(){
RestRequest req = RestContext.request;
RestResponse res = Restcontext.response;
Id caseId =
req.requestURI.substring(req.requestURI.lastIndexOf('/')+1);
Blob picture = req.requestBody;
Attachment a = new Attachment (ParentId = caseId,
Body = picture,
ContentType = 'image/

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Unit Testing
• Declare Classes/Code as Test
• isTest Annotation
• testmethod keyword
• Default data scope is test only
• 75% coverage required

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Governor Limits
• System Level Limits
• Examples include:
• 150 DML calls
• 10 callouts
• More in the Apex Workbook
• Chapter 3, Tutorial #13

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Bulkify Logic
// For loop to iterate through all the queried Account records !
for(Account a: accountsWithContacts){!
// Use the child relationships dot syntax to access the related Contacts!
for(Contact c: a.Contacts){!
!contactsToUpdate.add(c);!
} !
}!
!
//Now outside the FOR Loop, perform a single Update DML statement. !
update contactsToUpdate; !
!
http://wiki.developerforce.com/page/Apex_Code_Best_Practices

31. #forcewebinar
Recap
§ What is Apex?
§ Developing in your browser
§ Apex Controllers
§ Apex Triggers
§ Other Apex Use Cases

32. #forcewebinar
Resources
§ Your Developer Edition
– http://developer.force.com/join
§ Force.com Workbook
– http://developer.force.com/workbooks
§ Apex Workbook
– http://developer.force.com/workbooks

33. Q & A
#forcewebinar
Joshua
Birk
Developer Evangelist
@joshbirk
LeeAnne
Templeman
Developer Evangelist
@leeanndroid