The type="Product[]" is a way to make the array returned to be an array of CFC
objects. This is a johnny-come-lately syntax addition and I'm not sure where
it is documented. Allows you to write code like:
<cffunction name="getProducts" returntype="com.mycompany.model.Product[]">
<cfset var retArray = ArrayNew(1)/>
<cfloop from="1" to="10" index="i">
<cfset
ArrayAppend(retArray,createObject("component","com.mycompany.model.Product"))/>
</cfloop>
<cfreturn retArray/>
</cffunction>
And in your delegate class:
public function result(obj:Object):void
{
var event:ResultEvent = ResultEvent(obj);
ModelLocator.getInstance().products = new
ArrayCollection(ArrayUtil.toArray(event.result));
}
Now your ArrayCollection will contain a collection of AS Product objects -
directly translated from CFCs. That works and works great and requires that you
have created a matching AS object to your Product CFC, the how-to of which has
been written up in numerous places.
What is at issue is specifically the ability to have the ArrayCollection exist
as a PROPERTY of your ActionScript PARENT object. Like
<cfcomponent name="Catalog" alias="com.mycompany.model.Catalog">
<cfproperty name="catalog__id" type="numeric"/>
<cfproperty name="catalog_name" type="string"/>
<cfproperty name="products" type="com.mycompany.model.Products[]"/>
</cfcomponent>
[RemoteClass(alias="com.mycompany.model.Catalog")]
[Bindable]
public class Catalog
{
import mx.collections.ArrayCollection;
public function Catalog()
{
}
public var catalog_id:Number;
public var catalog_name:String;
public var products:ArrayCollection;
}
If you passing back a Catalog.cfc instance with the products array populated,
that product array will not be translated over the wire - that's what I'm
seeing and it just may not be supported yet. What I'm doing currently is to
populate my Catalog object in two passes - one to get the catalog metadata and
the other to get the product ArrayCollection.
Jeff
-----Original Message-----
From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Adam
Dorritie
Sent: Thursday, January 18, 2007 8:22 AM
To: [email protected]
Subject: Re: [flexcoders] Slightly OT - The Limitations of CFMX 7.02
On 1/17/07, Battershall, Jeff <[EMAIL PROTECTED]> wrote:
> I've been using CFMX 7.02's ability translate CFCs to AS objects but
> have noticed the following limitation:
>
> If I have an array of objects (like CFCs) in my CFC/AS class def -
> these will not translate over the wire and I'm forced to pull over
> the array as a separate remoting request.
>
> Example:
> Catalog.cfc has an attribute products of type Product.cfc array.
> <cfproperty name="Products" type="Product[]"/> Catalog.as has an
> ArrayCollection of Product objects, i.e., public var
> Products:ArrayCollection.
I'm confused about the syntax of the <cfproperty> tag you used above. I may be
wrong, but my understanding is that you would specify that Products is an array
like this: <cfproperty name="Products" type="array">. IIRC CF isn't concerned
about the type of an array's content. I would also echo João's advice to
define Products as an Array in your AS class.
--
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