Book Image

ColdFusion 9 Developer Tutorial

By : John Farrar
Book Image

ColdFusion 9 Developer Tutorial

By: John Farrar

Overview of this book

Adobe ColdFusion is an application server, renowned for rapid development of dynamic websites, with a straightforward language (CFML), powerful methods for packaging and reusing your code, and AJAX support that will get developers deep into powerful web applications quickly. However, developing rich and robust web applications can be a real challenge as it involves multiple processes.With this practical guide, you will learn how to build professional ColdFusion applications. Packed with example code, and written in a friendly, easy-to-read style, this book is just what you need if you are serious about ColdFusion.This book will give you clear, concise, and practical guidance to take you from the basics of ColdFusion 9 to the skills that will make you a ColdFusion developer to be reckoned with. It also covers the new features of ColdFusion 9 like ORM Database Interaction and CF Builder.ColdFusion expert John Farrar will teach you the basics of ColdFusion programming, application architecture, and object reuse, before showing you a range of topics including AJAX library integration, RESTful Web Services, PDF creation and manipulation, and dynamically generated presentation files that will make you the toast of your ColdFusion developer town.This book digs deep with the basics, with real-world examples of the how and whys, to get more done faster with ColdFusion 9.
Table of Contents (22 chapters)
ColdFusion 9 Developer Tutorial
Credits
About the Author
About the Reviewers
Preface
Index

Object method access control


Generally, objects are not intended to create output other than returning actual variables. That is why the attributes output="false" have been added all over the CFC code. You will also notice that there is an attribute called access="public" in many of the methods. There are actually a number of settings for this. All of these indicate where the calling code must be for the method to run. Here is a list of the settings and definitions for each one:

  • Public: This is the most common and default setting, if not declared. It means that any code on the server can call the object method and it will run.

  • Private: In this case, the method may only be called from within the CFC. In practice, we would have taken our setAttribute() method and made it private. This method would normally be called only from within the actual CFC and never from outside the CFC.

  • Package: This is the condition where code only in the same directory may call the method. The term package comes from...