Re: [flexcoders] Casting Value Objects

[Sam Shrefler]

Pete:
 
Two things to try...first:  Try typing your array collection by doing this in your ModelLocator:
 
[ArrayElementType("com.xxx.xxx.model.ModuleVO")]public var modules:ArrayCollection;
 
Also, in your VO class, add this:
 
//assuming you have your VO named the same on the remote side...
[RemoteClass(alias="com.xxx.xxx.model.ModuleVO")] public class ModuleVO
 
Another thing is to make sure (ServiceCapture should work) that your CF Object is being passed typed as a ModuleVO
 
Hope that helps...
Sam
 
 
 
On 9/12/06, Pete Capra <[EMAIL PROTECTED]> wrote:







Hi there, 
 
I'm having a little trouble casting results from an RPC to a ValueObject. For example, I'm returning an array of objects from CF the object has two properties and I have created a VO class accordingly:

 
package com.xxx.xxx.model {
 
    [Bindable]
    public dynamic class ModuleVO {
 
        public var module_id:Number;
        public var module_name:String;
 
    }
 
}
 
When the result is returned I cast it as an array and insert it into an ArrayCollection for use in a datagrid (which works fine). I have two text inputs that I want to be binded to the selectedItem in the datagrid. This is where my problems occur:

 
<mx:DataGrid id="dgModules" dataProvider="{ModelLocator.getInstance().modules}"/>
<view:ModuleEditor module="{dgModules.selectedItem as ModuleVO}"/>
 
When the app runs it doesn't cast correctly as a ModuleVO and returns null values. I have checked the properties of the selectedItem in the DataGrid and it has both module_id and module_name but something goes awry in the casting process. I tried adding a constructor to the ModuleVO class that accepts an object:

 
package com.xxx.xxx.model {
 
    [Bindable]
    public dynamic class ModuleVO {
 
        public var module_id:Number;
        public var module_name:String;
 
        public function ModuleVO(module:Object) {
            this.module_id = module.module_id
            this.module_name = module.module_name
        }
 
    }
 
}
 
and changing the Module Editor code to:
 

<mx:DataGrid id="dgModules" dataProvider="{ModelLocator.getInstance().modules}"/>
<view:ModuleEditor module="{new ModuleVO(dgModules.selectedItem)}"/>
 
and it works fine. This method seems like it requires unneccessary lines of code and makes adding further properties a pain in the neck. Can anyone shed any light on where I am going wrong?
 
Thanks in advance,
 
Pete
 
Pete CapraInformation Systems CoordinatorCapra Ryan Online Learningp. (617) 3208 9455m. 0411 043 305
f. (617) 3208 9855a. PO Box 1744 Springwood Q 4127www.capraryan.com[EMAIL PROTECTED]
n.com.au 
 
 

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