MACROMEDIA ColdFusion MX, Develop Manual

Page: 643 / 860

Using the Flash Remoting service with ColdFusion pages 643
Using the Flash Remoting service with ColdFusion pages
When building a ColdFusion page that interacts with Flash movies, the directory name that
contains the ColdFusion pages translates to the Flash service name in ActionScript. The
individual ColdFusion page names contained in that directory translate to service functions in
ActionScript.
In your CFML, you use the Flash variable scope to access parameters passed from Flash movies
and return values to Flash movies. To access parameters passed from Flash movies, you use the
parameter name appended to the
Flash
variable or the
Flash.Params
array. To return values to
the Flash application, use the
Flash.Result
variable. To set an increment value for records to be
returned to the Flash application, use the
Flash.Pagesize
variable.
The following table shows the variables contained in the Flash scope:
In addition, the following table compares the ColdFusion data types and their ActionScript
equivalents:
Variable Description For more information
Flash.Params A structure containing the
parameters passed from the Flash
movie. See “Accessing parameters passed from
Flash” on page 644 .
Flash.Result The variable returned to the Flash
movie that called the function. See “Returning results to Flash”
on page 645 .
Flash.Pagesize The number of records returned at a
time to Flash. See “Returning records in increments to
Flash” on page 645 .
ActionScript data type ColdFusion MX data type
Number (primitive data type) Number
boolean (primitive data type) boolean
String String
ActionScript (AS) object Structure
AS Object (as the only
argument passed to a service
function) Arguments to the service function. ColdFusion pages (.cfm):
flash
variable scope, ColdFusion components (.cfc): named arguments
null null (ASC returns 0, which translates to not defined)
undefined null (ASC returns 0, which translates to not defined)
Ordered array Array
Named array Struct
Date object Date
XML object XML document
RecordSet Query object