Evening, I'm in the process of creating an application, part of which is a series of CFCs which perform and cache data, allowing quick retrieval on the next call. This is done by passing a reference to a function to a method of a CFC which then runs the function after doing some other processing and returns the data.
Now I want to be able to cache the data generated. The generated data will be plain text and so I'm just planning on storing it (keyed on something that uniquely identifies the funciton used) within an structure as an instance variable in the CFC. So basically, I need a way to generate a structure key based on a reference to a function. The way I've come up with is simply a hash of the toString of the function, prefixed with an arbitrary string so the variable name is valid, as so: <cfset this.KEYPREFIX = "i"> <cfset key = this.KEYPREFIX & hash(myFuncRef.toString())> Which results in a key of "i8CF622BA70E703A796DB0FD8AC8ABFA8" -- a valid variable name and unique to the function called. The myFuncRef.toString() returns an output similar to "[EMAIL PROTECTED]" which is basically the associated compiled java class. AFAIK this uniquely identifies the function being used and means I don't have to manually associate an ID with each function. The hash() + the string prefix call makes sure that any invalid chars get removed and the chance of two hash() calls returning the same value is supposedly around 1 in 2^64 so it should be safe there... Basically, does anyone see any issue with doing it this way? Tim. ------------------------------------------------------- RAWNET LTD - Internet, New Media and ebusiness Gurus. Visit our new website at http://www.rawnet.com for more information about our company, or call us free anytime on 0800 294 24 24. ------------------------------------------------------- Tim Blair Web Application Engineer, Rawnet Limited Direct Phone : +44 (0) 1344 393 441 Switchboard : +44 (0) 1344 393 040 ------------------------------------------------------- This message may contain information which is legally privileged and/or confidential. If you are not the intended recipient, you are hereby notified that any unauthorised disclosure, copying, distribution or use of this information is strictly prohibited. Such notification notwithstanding, any comments, opinions, information or conclusions expressed in this message are those of the originator, not of rawnet limited, unless otherwise explicitly and independently indicated by an authorised representative of rawnet limited. ------------------------------------------------------- ---------------------------------------------------------- You are subscribed to cfcdev. To unsubscribe, send an email to [EMAIL PROTECTED] with the word 'unsubscribe cfcdev' in the message of the email. CFCDev is run by CFCZone (www.cfczone.org) and supported by Mindtool, Corporation (www.mindtool.com).
