MACROMEDIA COLDFUSION MX 61-DEVELOPING COLDFUSION MX, Develop Manual, Page: 222 / 860

222 Chapter 11: Building and Using ColdFusion Components
Creating web services
ColdFusion MX can automatically publish CFC methods as web services. To publish a CFC
method as a web service, you specify the
access="remote"
attribute in the method’s
cffunction
tag. ColdFusion generates all the required Web Services Description Language (WSDL) code and
exports the CFC methods. For more information on creating web services in ColdFusion, see
Chapter 32, “Using Web Services,” on page 707 .
Creating Macromedia Flash Remoting elements
Flash applications that use Flash Remoting MX can access CFC methods by using the CFC path
as the service name in a NetServices
gatewayConnection.getService
method. Then you call
the CFC methods by appending the method name to the service name, as the following example
shows:
gatewayConnection = NetServices.createGatewayConnection();
myServiceObject = gatewayConnection.getService("myService", this);
myServiceOjbect.myFunction( { dept: Sales, name: BobZ });
For more information on creating CFCs for Flash Remoting MX, see “Using Flash with
ColdFusion components” on page 646 .
Calling CFC methods using a URL or form
Clients can directly call CFC methods using a URL or by submitting form fields. In these cases
the CFC method is responsible for generating all HTML that is returned to the client.
ColdFusion component features and use
This section describes the elements and features of CFCs. It indicates how CFCs embody the
concepts described in the
“Basic component concepts” section. It introduces, but does not
describe in detail, how to use these elements in a ColdFusion application.
Tags and functions for creating and using CFCs
The following table lists the required tags and functions that you use to create or use CFCs. It also
lists the tags and functions that contain CFC-specific functionality.
Tag or function Description
cfcomponent Contains a component definition; includes attributes for introspection
cffunction Defines a component method (function); includes attributes for
introspection
cfargument
Defines a parameter (argument) to a method; includes attributes for
introspection
cfproperty Defines variables for CFCs that provide web services; can also be used to
document component properties
cfinvoke
Invokes a method of a CFC
cfinvokeargument
Passes the name and value of a parameter to a component method
cfobject
Creates a CFC instance
CreateObject
Creates a CFC instance
GetMetaData
Returns the metadata of a CFC