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Yea, you'll be fine...it's only in subsequent
requests that your (session|application|server) cfc starts acting up. But
as most of the people will tell you on this list, you really do not want to be
setting these types of variables in a cfc...
Tyler
----- Original Message -----
Sent: Friday, June 20, 2003 10:03
AM
Subject: Re: [CFCDev] Setting Scoped Vars
in CFC's - Was (Dynamic CFC Calls)
"but in general, a CFC instance that is persisted across requests holds
onto the page context of the request during which it was created."
"Page Context Bug" occurs only when the *.cfc instance is persisted
in any Memory scope..?
e.g
server.someInstance = createObject("Component","MyCFC");
Or
application.someInstance = createObject("Component","MyCFC");
Or
session.someInstance = createObject("Component","MyCFC");
All the above instances will lead to "Page Context Bug" right
?
So in the below cases... we shouldnt have any problems.. setting any
scope variables within CFC's
request.someInstance = createObject("Component","MyCFC");
Or
variables.someInstance = createObject("Component","MyCFC");
Thanks
Joe Eugene
----- Original Message -----
Sent: Friday, June 20, 2003 2:33
AM
Subject: RE: [CFCDev] Setting Scoped
Vars in CFC's - Was (Dynamic CFC Calls)
The
"page context bug" is the issue to watch out for. If you search for
"page context bug" on Google you will find more than you ever wanted to know
-- since it has been covered in depth on this list in the recent past I
won't get into the details, but in general, a CFC instance that is persisted
across requests holds onto the page context of the request during which it
was created.
If you aren't persisting your CFC instances in memory across
requests it's not something you need to even think about. I would also
not be surprised, given that this is an acknowledged and much maligned bug,
if you see fixes to all page context issues in future maintenance release of
CFMX.
Just wondering, havent seen any docs on this.
Are there any problems setting/manipulating scope variables
like
1. Server Scope
2. Application Scope
3. Request Scope
4. Client Scope
Variables within CFC's.. Appreciate any input.
Thanks,
Joe Eugene
How
do i use argumentCollection? is there some kinda collection
available in CFMX like Java Collections?
Thanks,
Joe
If you want to pass the argument names dynamically, I suggest
you use the argumentCollection
Thanks Nathan,
I knew.. there was a way around the
"evaluate"....
It
was really bothering me.. to advocate NOT to use "evaluate"
and
having forced to use
it.
One
more question.. havent tested it..
Can
i pass the parameters in
value=
variables[objName].dynMethod(request.param1,request.param2);
Thanks
Joe Eugene
A similar method, if you need the dynamically called
method to have access to the CFC internals might
be:
<cfscript>
object =
createObject("component",
"yourComp");
objName =
"object";
methodName =
"yourMethod";
variables[objName].dynMethod =
variables[objName][methodName];
value=
variables[objName].dynMethod();
writeOutput(value);
</cfscript>
In the original, you are "stripping" the method off the
CFC instance and making it local. In my method you
are "tacking" the dynamic method back onto the CFC
instance. It only matters if the method you call also
calls private/public methods of the CFC and/or uses instance
data of the CFC.
This works (tested):
<cfscript>
object =
createObject("component",
"yourComp");
objName =
"object";
methodName =
"yourMethod";
dynMethod =
variables[objName][methodName];
value=
dynMethod();
writeOutput(value);
</cfscript>
Is that what you're
after?
Adam
Cameron
Application Developer
Straker
Interactive
[EMAIL PROTECTED]
Fax + 64 9
3605870
DDI +64 4 4965664
Thanks Samuel... but that does NOT
work.
The only way i can get it to work is using
an evaluate.... and i really dont want to use
"evaluate"
variables.execMethod="request."&variables.varClass&"."&variables.varMethod;
'#variables.varName#'=
evaluate(variables.execMethod);
Your Code...
variables[varName] =
request[variables.varClass][variables.varMethod](); //
Complains about "()"
The compiler complains about the "()"
at the end... can u get it to work?
Thanks
Joe Eugene
----- Original Message -----
Sent: Tuesday, June
17, 2003 3:45 PM
Subject: RE: [CFCDev]
Dynamic CFC Calls
two ways,
1.
request.dataObj =
createObject("Component","Website/MyData");
varObj="dataObj";
varMethod="getStateData"; // removed the
parens
varName="someData";
variables[varName] =
request[varObj][varMethod]();
2.
<cfinvoke
component="#request[varobj]#" method="#varMethod#"
returnVariable="#varName#">
Untested but both should work.
hth,
Sam
Anybody know how to dynamically call
methods in CFC's
<cfscript>
request.dataObj =
createObject("Component","Website/MyData");
varObj="dataObj";
varMethod="getStateData()";
varName="someData";
// Now, i want to be able to call the
CFC Dynamically, something like
'#varName#'=request["#varObj#"]["#varMethod#"];
//.#varMethod# doesnt work
either.
</cfscript>
I am getting the below from the above
code.
"Element getleftNavLinks is undefined
in a Java object of type class
coldfusion.runtime.TemplateProxy referenced
as"
What am i missing?..
Thanks
Joe
Eugene
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