20.15. Receiving Typed Objects with ColdFusion
Problem
You want to be able to handle typed object parameters (i.e., properties of an object that store data of a custom type) sent to a ColdFusion back end (a CFC function or a CFM page).
Solution
Work with the parameter as an ASObject
. Use the
get( )
method to get the values for the
properties, and use the getType( )
method to get
the registered class name.
Discussion
Typed objects are automatically converted to
ASObject
datatypes in ColdFusion.
ASObject
is a Java class that extends the
java.util.HashMap class (meaning all the
properties and methods of a HashMap
will also
work for an ASObject
) that also adds the
getType( )
and setType( )
methods. If you are not yet familiar with how to work with Java
objects in ColdFusion, you can read more about this in the ColdFusion
documentation here:
http://livedocs.macromedia.com/cfmxdocs/Developing_ColdFusion_MX_Applications_with_CFML/Java5.jsp#1134356 |
Here is an example of a snippet of ActionScript code that creates a typed object and sends it to a ColdFusion service function:
function MyClass(a, b) {
this.a = a;
this.b = b;
}
MyClass.prototype.a;
MyClass.prototype.b;
Object.registerClass("MyClass", MyClass);
// Send a new MyClass
object to a ColdFusion service function.
myCFService.serviceFunction(myResponseObj, {param: new MyClass("eh", "bee")});
Here is an example of a ColdFusion snippet that extracts the values
from properties named a
and b
from an ASObject
named param
and also retrieves the ...
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