ORM scratch board

ORM.php

<?php
/*
 Ideas on ORM interface and interactions / relationships

*/

class Dataobject {
	function __construct(Data $mapper, array $data = null) {
		$this->mapper = $mapper;
		if($data) {
			$this->record = $data;
		}
	}

	function write() {
		$this->mapper()->write($this);
 	}
}

class Controller {
	function doSave() {
		$obj = new DataObject();
		MongoData::inst()->write($obj);
 	}
}

// name is WIP ;)
class Data implements DataMapper {
	function getByID($id) {
		return $this->dataQuery()->select()->where(...);
	}
	
	// special super duper fast 
	function getObjectVeryFast) {
		$data = $this->getLatestFromMemcached();
		return new DataObject($this, $data);
	}
   
	function write(DataObject $object) {
		// Do data integrity validation here?
		if($object->exists()) {
			$this->dataQuery()->update($object);
		} else {
			$this->dataQuery()->insert($object);
		}
		$this->latestToMemcached($object);
	}
}