Thanks for your reply. Setting a global variable in the constructor area does not
work. Every time the CFC is called it seems
to start from scratch. For example;
<cfset vars=structNew()>
<cfset init()>
<cfcomponent name="init">
<cfset var myResult=''>
<cfif not structKeyExists(vars, 'result')>
<!--- Read from Config File --->
<cfset vars.result=myResult>
</cfif>
<cfreturn vars.result>
</cfcomponent>
If I have a DSN value set in the config file to the correct DSN all works well. When I
change this value to an invalid DSN
name on the next call I get the data source could not be found error. This is telling
me that the CFC clears all instance
data after each use. I thought that maybe placing an isDefined('vars.result') around
the <cfset vars=structNew()> would keep
it from resetting the vars structure, but it does not. Again that tells me that
vars.result is not being saved from request
to request. TGIF! :)
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Thomas Chiverton
Sent: Friday, October 17, 2003 5:07 AM
To: [EMAIL PROTECTED]
Subject: Re: [CFCDev] Initialize only once
Of the general purpose Memoizer ? Probably not - but it's a well known IT
method that should be easy to implement given a few hours.
As to a one-off:
<cfcomponent name="AddReals">
<cfset vars.result=newArray()>
<cffunction name="add">
<cfarg name="a"
<cfarg name="b"
<cfif isDefined('vars.result[a][b]')><cfreturn vars.result[a][b]></cfif>
<cfelse>
//do complicated time consuming math, set thisResult to answer
<cfif isDefined('vars.result[a]')>
<cfset vars.result[a][b]=thisResult>
<cfelse>
<cfset vars.result[a]=newArray()>
<cfset vars.result[a][b]=thisResult>
</cfif>
</cffunction>
</cfcoponent>
----------------------------------------------------------
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).
An archive of the CFCDev list is available at www.mail-archive.com/[EMAIL PROTECTED]
