An Introduction to ObjectOriented Programming in ColdFusion MX

Source: www.mattwoodward.com
Topic: Coldfusion Programming

Short Desciption:
CFC101. An Introduction to ObjectOriented. Programming in ColdFusion MX. Matt Woodward. Dallas/Fort Worth CFUG. February 82005 ...

 

Content Inside:
An Introduction to ObjectOriented Programming in ColdFusion MXPage 1CFC101An Introduction to ObjectOriented Programming in ColdFusion MXMatt WoodwardDallas/Fort Worth CFUGFebruary 82005Page 2Whats OOP?Objectoriented programming (OOP) is a method of creating a software application from a group of software components calledobjectsThe application itself is made up of messagesthat are passed between these objectsOOP contrasts with procedural programmingPage 3Whats OOP?In procedural programmingdata and the functions that manipulate the data are separate from one anotherBecause much of the data is available to multiple functionsthis can make debugging difficultParticularly as applications become largetheprocedural model begins to break downPage 4Whats OOP?By contrastbecause data and functions (called methods in OOspeak) are contained within objectsthe data is more protected and the application can grow with fewer problemsObjects also model realworld objects moreaccuratelyso conceptually even complex problems can be simpler to address through softwarePage 5Whats an Object?Objects are at the heart of OOP (not surprisingly)Objects are selfcontained software components that are used to build objectoriented applicationsObjects contain data (usually referred to as attributes) and ways of working with the data(methods)Page 6Whats an Object?Example:PersonAttributes:nameheight weightsexeye colorshoe sizeMethods:walkruneatsleepwrite ColdFusion applicationsAnother term associated with this is classwhich you can think of as a generic version of the objectPage 7OOP in CFMXColdFusions construct that can be used for OOP in CFMX is the ColdFusion Component (CFC)Can be used for OOP ...:CFCs are more than containers for UDFs!!!CFCs lack some features of Java objectsbut the few limitations that do exist dont stop us from doing OOP in CFMXPage 8Why OOP?1.Everybodys Doing ItOOP is the way software is built in practically every major language today (JavaVB .NETC#PHPC++)From a career standpoint ...