Createobject - cfinvoke

Posted on 2012-03-22
Last Modified: 2012-03-22
Hello experts.
I need help to replace the following createobject with cfinvoke.
<cfset objsheduletask = createobject("component","com.scheduletasks").init(request.dsn)/>
<cfset objsheduletask.fsendundelivered(request.homeurl)/>

   <cffunction name="init" access="public" output="false" returntype="any">
        <cfargument name="dsn" type="string" required="true">
        <cfset variables.dsn = arguments.dsn>
        <cfreturn this>
   <cffunction name="fsendundelivered" returntype="boolean" access="public">
     <cfargument name="homeurl" type="string" required="yes">
 <cfquery name="....." datasource="#variables.dsn#">
     <cfreturn true>

I could use:
<cfinvoke component="com.scheduletasks" method="fsendundelivered">
 <cfinvokeargument name="homeurl" value="#request.homeurl#" >
<cffunction name="fsendundelivered" returntype="boolean" access="public">
     <cfargument name="homeurl" type="string" required="yes">
      <cfquery name="....." datasource="#request.dsn#">
     <cfreturn true>
Is this correct?
Is there any better way?
Question by:Panos
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
LVL 16

Expert Comment

by:Gurpreet Singh Randhawa
ID: 37752056
here u should should

 <cfinvokeargument name="homeurl" value="#request.homeurl#" >

rest i m not sure what u are asking abt

Author Comment

ID: 37752078
Hi myselfrandhawa
I did correct this the same time you posted your comment.

Using the createobject i use the init function to set the dsn.
Using cfinvoke i have to delete the init function and use the request.dsn value.

I'm asking if i do this right
LVL 52

Accepted Solution

_agx_ earned 450 total points
ID: 37752282
Nothing technically wrong with the way you have it. But using a #request# variable makes the cfc slightly less modular.

Is there any better way?

If you're sure the component is stateless, and not tied to a specific session, yeah. Whichever you're using it's better to create stateless components once (in OnApplicationStart). Then store them in your application scope.  Using your original init() method:

       <cfinvoke component="com.scheduletasks" method="init"
                   dsn="#request.dsn" returnVariable="theObject" />
        <cfset application.scheduleTasks = theObject >

Then when you need to call one of the functions use:

    <cfinvoke component="#application.scheduleTasks#" method="fsendundelivered">
          <cfinvokeargument name="homeurl" value="#request.homeurl#" >

Just make sure ALL of your function variables are properly var scoped. Otherwise you'll have threading problems.
MIM Survival Guide for Service Desk Managers

Major incidents can send mastered service desk processes into disorder. Systems and tools produce the data needed to resolve these incidents, but your challenge is getting that information to the right people fast. Check out the Survival Guide and begin bringing order to chaos.

LVL 39

Assisted Solution

gdemaria earned 50 total points
ID: 37752347
I'm curious why the change from createObject to cfinvoke.  To me createobject is a cleaner, more intuitive style and easier to assign to an application scope

<cfset application.sheduleTasks = createobject("component","com.scheduletasks").init(request.dsn)/>

Why would you want to change away from it?  (Other than a person preference to cfinvoke?)
LVL 52

Expert Comment

ID: 37752406
Possible hosting restriction? Though my preference is createObject too..

Author Comment

ID: 37752471
Hi agx and gdemaria
Thank you for your posts.
Agx is right . There is a hosting restriction when i use createobject edit a scheduletask.

Author Closing Comment

ID: 37752581
Thank you
regards panos

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

PROBLEM: How to add your own buttons to the bottom toolbar with paging info ( result count ). While creating a cfgrid, I ran into an issue where I wanted to embed my own custom buttons where the default ones ( insert / delete / etc… ) are for aes…
Hi. There are several upload tutorials using jquery and coldfusion. I found a very interesting one here Upload Your Files using Jquery & ColdFusion and Preview them ( . I did keep the main js functions but made sever…
This video Micro Tutorial shows how to password-protect PDF files with free software. Many software products can do this, such as Adobe Acrobat (but not Adobe Reader), Nuance PaperPort, and Nuance Power PDF, but they are not free products. This vide…
In this video, viewers are given an introduction to using the Windows 10 Snipping Tool, how to quickly locate it when it's needed and also how make it always available with a single click of a mouse button, by pinning it to the Desktop Task Bar. Int…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question