User Guide

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Table Of Contents

Using Flash Remoting with server-side ActionScript 111

Using Flash Remoting with server-side ActionScript

The ability to create server-side ActionScript provides a familiar way for Flash developers to access

ColdFusion query and HTTP features without learning CFML. Identify the ActionScript files

(with the .asr extension) that you want to call from the Flash application and place them on the

server, anywhere under the web server’s root directory. To specify subdirectories of the web root or

a virtual directory, use package dot notation. For example, in the following assignment code, the

stockquotes.asr file is in the mydir\stock\ directory:

var stockService:Service =

gatewayConnnection.getService("mydir.stock.stockquotes", this);

You can also point to virtual mappings, such as cfsuite.asr.stock.stockquotes, where

cfsuite is a virtual mapping and asr.stock is a subdirectory of that mapping. The CF.query

and

CF.http functions give you a well-defined interface for building the SQL queries and HTTP

operations of ColdFusion.

For example, the following server-side ActionScript function definition returns a RecordSet

object:

function basicQuery()

{

var mydata = CF.query({datasource:"customers",

sql:"SELECT * FROM myTable"});

return mydata;

}

Using CF.http()

The

CF.http() ActionScript function lets you retrieve information from a remote HTTP server.

HTTP

Get and Post methods are supported. Using the Get method, you send information to

the remote server directly in the URL. This method is often used for a one-way transaction in

which the

CF.http() function retrieves an object, such as the contents of a web page. The Post

method can pass variables to a form or CGI program, and can also create HTTP cookies.

One of the most basic ways to use the

CF.http() function is with the Get method argument to

retrieve a page from a specified URL. For example, the following server-side code retrieves file

content from the specified URL:

function basicGet(url)

{

// Invoke with just the url. This is an http get.

result = CF.http(url);

return result.get("Filecontent");

}

In the client-side ActionScript, you call the service function and display the results in the Flash

application, as in the following example:

import mx.remoting.Service;

import mx.remoting.PendingCall;

import mx.rpc.RelayResponder;

import mx.rpc.ResultEvent;

var myHttpService:Service = new Service(