Martin,
You need to use the variables scope to be able to reference set values. Try
this:
<cfcomponent name="QRY_financial" displayname="financial stuff" hint="get
common financial data">
<cffunction name="init" access="public" output="false"
returntype="void">
<cfargument name="dsn" type="string" required="true">
<cfset variables.dsn = arguments.dsn>
</cffunction>
<cffunction name="setDsn" access="public" output="false"
returntype="string">
<cfargument name="dsn" type="string" required="true">
<cfset variables.dsn = arguments.dsn>
</cffunction>
<cffunction name="getDsn" access="public" output="false"
returntype="string">
<cfreturn variables.dsn />
</cffunction>
</cfcomponent>
The variables scope is local to the CFC and all shared public and private
functions of the CFC.
If you always init this object, having a setDSN may be duplicate. You will
typically either use an init to set the dsn or use the set method to put the
data in. It depends on how to invoke the object. This is refered to
constructor arguments versus setter injection arguments. ColdSpring
framework uses these effectively to manage object invocation.
Cheers,
Teddy
On 1/5/07, Martin Thorpe <[EMAIL PROTECTED]> wrote:
>
> This also works fine, I just can't do it in a single call, I know it is
> only 2 lines but I quite fancy doing it like this and it gets to me when
> something does not work as I feel it should.
>
> This also works
> <cfset finObj = createObject("component","queries.QRY_financial")>
> <cfset t = finObj.init(myDsn)>
>
> <cfdump var="#finObj.getDsn()#">
>
> I am running 7.01
>
> >Now this is something that really bugs me and I have never managed to
> >get working with CFCs.
> >
> >
> >
> >What I have is a cfc like this:
> >
> >
> >
> ><cfcomponent name="QRY_financial" displayname="financial stuff"
> >hint="get common financial data">
> >
> > <cfproperty name="dsn" displayname="datasource" hint="the
> >datasource name" type="string" />
> >
> > <cffunction name="init" access="public" output="false"
> >returntype="void">
> > <cfargument name="dsn" type="string" required="true">
> > <cfscript>
> > setDsn(arguments.dsn);
> > </cfscript>
> > </cffunction>
> >
> > <cffunction name="getDsn" access="public" output="false"
> >returntype="string">
> > <cfreturn dsn />
> > </cffunction>
> >
> > <cffunction name="setDsn" access="public" output="false"
> >returntype="void">
> > <cfargument name="dsn" type="string" required="true" />
> > <cfset dsn = arguments.dsn />
> > <cfreturn />
> > </cffunction>
> >
> >.....more stuff
> >
> >
> >
> >
> >
> >Which I think I should be able to call like this as I have seen all over
> >the web.
> >
> ><cfset finObj =
> >createObject("component","queries.QRY_financial").init(myDsn)>
> >
> ><cfdump var="#finObj.getDsn()#">
> >
> >
> >
> >But when I do this I get an error from the Cfdump that:
> >
> > Variable finObj is undefined
> >
> >
> >
> >Now I have tried it a number of ways, without the specific init function
> >and calling the setDsn like this
> >
> ><cfset finObj =
> >createObject("component","queries.QRY_financial").setDsn(myDsn)>
> >
> >
> >
> >No joy here just the same thing. I feel that I am missing out on
> >something fundamental here, can someone give me a tip or a hint as to
> >what I am doing wrong.
> >
> >
> >
> >Thanks for reading.
> >
> >
> >
> >Cheers
> >
> >Martin
>
>
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