PureMVC Architects Lounge

I have several proxies that interact with their own corresponding xml file.  The xml is then used as the proxy data to manipulate.  I am stumped as to how to change the xml data....or better yet, I am stumped because "getData()" does not return a reference (like AS3 does).  It seems in my setter functions, I would have to pull the entire contents of the xml in to a variable, do the necessary changes, then "setData()" with the updated xml data.  OR, I override the getData() to return a reference.  OR, I use a delegate to do the xml manipulation and use the delegate as the proxy data.  No matter which way I try to implement it, I get the feeling I'm doing it wrong.  Any advice or suggestions?

Thanks

How about having the Proxy pull the XML into a variable, send it off in a notification and have a Command parse it and then do a setData on the Proxy. When that setData happens send off the note that says it's available.

-=Cliff>

I'm confused. You are setting XML, type regular string, as Proxy data? Why not set DOMDocument instance or SimpleXMLElement instance as Proxy data?

Caveat: I don't know anything about PHP's data types. I assumed it needed to be parsed.

-=Cliff>

I'm confused. You are setting XML, type regular string, as Proxy data? Why not set DOMDocument instance or SimpleXMLElement instance as Proxy data?

No, I am wanting to use the DOMDocument or SimpleXMLElement instance as the proxy data.  My question was more related to how to implement either of them.  For example, if I have this...

<?php
class FooBarProxy extends Proxy implements IProxy
{
    public function loadXML($filename)
    {
        $xml = simplexml_load_file($filename);
        $this->setData($xml);
    }

    public function getNodeValue($nodeName)
    {
        return $this->getData()->$nodeName;
    }
    
    public function setNodeValue($nodeName, $value)
    {
        $xml = $this->getData();
        $xml->$nodeName = $value;

        $this->setData($xml);
    }
}
Whenever I call setNodeValue, I am basically creating a second copy of the xml data in order to update with the new value.  In AS3, getData returns a reference to the actual data so in terms of PHP it would something like this...

public function setNodeValue($nodeName, $value)
    {
        $this->getData()->$nodeName = $value;
    }


My overall question is..would my original setNodeValue function from the first code snippet be considered "correct"?  Ie.  make a local copy of the xml instance, manipulate it, then setData. 
To me, making that second local copy just seems inefficient.  I would think it would be better to use the proxy to somehow manipulate the data directly...not make copies, manipulate, then setData.

No logical reason to copy the data in the proxy before modification. Your shortcut to setting the node on the data itself seems correct.

-=Cliff>