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ColdFusion 9 Developer Tutorial

You're reading from   ColdFusion 9 Developer Tutorial Create robust professional web applications with ColdFusion

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Product type Paperback
Published in Jul 2010
Publisher Packt
ISBN-13 9781849690249
Length 388 pages
Edition 1st Edition
Languages
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Author (1):
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John Farrar John Farrar
Author Profile Icon John Farrar
John Farrar
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Table of Contents (22) Chapters Close

ColdFusion 9 Developer Tutorial
Credits
About the Author
About the Reviewers
1. Preface
1. Web Pages—Static to Dynamic 2. Basic CFCs and Database Interaction FREE CHAPTER 3. Power CFCs and Web Forms 4. ORM Database Interaction 5. Application, Session, and Request Scope 6. Authentication and Permissions 7. CFScript 8. CF AJAX User Interface 9. CF AJAX Forms 10. CF AJAX Programming 11. Introduction to Custom Tags 12. ColdFusion Powered Views 13. Control Logic Processing 14. Guide to Unit Testing Beyond this Book Tools and Resources 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...

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ColdFusion 9 Developer Tutorial
Published in: Jul 2010
Publisher: Packt
ISBN-13: 9781849690249
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