In terms of which is the most efficient way of calling a cfcs... I like to use CreateObject(objectname,component);
Thinking about CFCs like classes in Java or C++ is natural for me, so I like to work in that mentality.. like Hal Helms points out. Keep in mind though, some hosting providers limit the use of this function. cfinvoke is nice as well... ----- Original Message ----- From: "Ian Skinner" <[EMAIL PROTECTED]> To: "CF-Talk" <[EMAIL PROTECTED]> Sent: Tuesday, June 10, 2003 1:24 PM Subject: CFC Newbie Discussion. > I'm experimenting with my first CFC. I've written these simple example > files. > > *** test.cfc *** > <cfcomponent displayname="My First CFC" hint="A trial CFC"> > <cfset this.X = 10> > <cfset this.Y = 15> > > <cfset A = 5> > <cfset B = 3> > > <cffunction name="multiplyXY" access="public" returntype="numeric"> > <cfset myResult = this.X * this.Y> > <cfreturn myResult> > </cffunction> > > <cffunction name="multiplyAB" access="public" returntype="numeric"> > <cfset myResult = A * B> > <cfreturn myResult> > </cffunction> > </cfcomponent> > *** end *** > > *** test.cfm *** > <cfobject name="testObj" component="test"> > <cfdump var="#testObj#"> > > <cfset this.X = 12> > <cfset this.Y = 24> > > <cfset A = 21> > <cfset B = 32> > > <cfinvoke component="#testObj#" method="multiplyXY" returnvariable="joe"/> > <cfinvoke component="#testObj#" method="multiplyAB" returnvariable="sam"/> > > <cfinvoke component="test" method="multiplyXY" returnvariable="joe2"/> > <cfinvoke component="test" method="multiplyAB" returnvariable="sam2"/> > > <cfoutput> > #testObj.X# * #testObj.Y# = #joe#<br> > #testObj.X# * #testObj.Y# = #testObj.multiplyXY()#<br> > #this.X# * #this.Y# = #this.X * this.Y#<br> > <br> > #sam#<br> > #testObj.multiplyAB()#<br> > #A * B#<br> > <br> > #joe2#<br> > #sam2#<br> > </cfoutput> > *** end *** > > What I would like to discuss is the performance differences between the > various component methods I've tested here. > > In the CFC code, the X and Y variables are in the "this" scope and the A and > B variables are in the default "variable" scope. What are the differences > between these practices other then the X and Y are available as properties > of an object (obj.X and obj.Y). > > Then in the CFM code I accessed the component a couple different ways. I > first used a <cfobject> tag to "instantiate" an instance of the component as > a object variable "testObj". I then accessed the methods of that instance > with a <cfinvoke> on testObj and directly [testObj.method()]. Finally I > just accessed the methods of the component directly with <cfinvoke>. > > I would like to discuss the pros and cons of these different practices and > when one might be better then another. Also, I remember reading about some > kind of scope bug involving CFC's, but since I wasn't really familiar with > CFC's at the time, I really didn't understand what I was reading. What > would this be about? > > Thank You > > -------------- > Ian Skinner > Web Programmer > BloodSource > Sacramento, CA > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
