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Learning Apex Programming

By : Matthew Kaufman, Wicherski

2.8 (6)

Learning Apex Programming

2.8 (6)

By: Matthew Kaufman, Wicherski

Overview of this book

If you are a developer who has some object-oriented programming experience, Learning Apex Programming is the perfect book for you. This book is most appropriate for developers who wish to gain an understanding of the Force.com platform and how to use Apex to create business applications.

Preface

Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Free Chapter

1. Apex Assumptions and Comparisons

1. Apex Assumptions and Comparisons

Before you start

A gift to our readers

Safety first

The Force.com IDE

Getting comfortable with Eclipse

Linking Eclipse to the Salesforce1 Platform

Under the hood

Data and metadata

Writing code

Summary

2. Apex Limits

2. Apex Limits

Exceptions prove the rule

Embracing an exception

An exception to end all exceptions

Obeying the speed limit

More limits

Edition limits

API limits

E-mail limits

Time and relative limits in space

You want me to process how many records?

How many times and how many things

Techniques to avoid query limits

These aren't the queries you're looking for

Visualforce limits

Summary

3. More and Later

3. More and Later

Chain reactions

Where we're going, we don't need roads

I fought the law and won

Please sir, I want some more

Combining forces

Bigger, better, and batchier

Dyna batch

Building skynet

Master control

Summary

4. Triggers and Classes

4. Triggers and Classes

A brief history of triggers

Trigger happy

Pulling the trigger

Inside the mind of a trigger

Class is in session

Staying classy

Put your hands together

Behind the scenes

The Pablo Picasso of Apex

Summary

5. Visualforce Development with Apex

5. Visualforce Development with Apex

s-con, what?

Your own personal Force.com

Tag, you're it!

Taking control

Extending control

More internal goodies

Static cling

Dynamic pages

Visualforce components

Your component library

Controlling components

Summary

6. Exposing Force.com to the World

6. Exposing Force.com to the World

Three ways to skin a cat

JavaScript buttons jubilee

For your consideration

My turn!

Summary

7. Use Case – Integration with Google Calendar

7. Use Case – Integration with Google Calendar

Gimme an O!

Googol

Forget me not

I'm late, very, very late!

O, Auth me mighty Google!

Summary

8. Creating a Property Management Application

8. Creating a Property Management Application

Why

What

Who

How

When and Where

A custom model

Paying your dues

Mine, all mine

Ain't no mountain

Upgrade to the app status

Summary

9. Test Coverage

9. Test Coverage

@isTest

Always on my mind

Get tested

Fruits of our labour

The ultimate goal

Summary

Index

Index

Bigger, better, and batchier

The Database.Batchable interface can be a lifesaver when dealing with large datasets. As there is a limit on the number of callouts that can occur in a single transaction, the Batchable interface is often used to sync data with outside systems. In order to perform a callout from an implementation of the Database.Batchable interface, you need to make a small tweak to your class definition. In addition to implementing the Database.Batchable interface, you must also implement the Database.AllowCallouts interface, shown as follows:

//Apex Class that implements the Batchable interface
global class contactBatch implements Database.Batchable<SObject>, Database.AllowCallouts {
  ...
}

Your code to perform callouts can occur in the start(), execute(), and finish() methods. The exact number of callouts allowed is specified in Salesforce Limits Quick Reference Guide located at https://login.salesforce.com/help/pdfs/en/salesforce_app_limits_cheatsheet.pdf. At the time...

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Tech Concepts

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Programming languages

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