protected function _init() {
		parent::_init();

		foreach (array('data', 'classes', 'model', 'result', 'query') as $key) {
			unset($this->_config[$key]);
		}
		if ($model = $this->_model) {
			$options = array(
				'pathKey' => $this->_pathKey,
				'schema' => $model::schema(),
				'exists' => isset($this->_config['exists']) ? $this->_config['exists'] : null
			);
			$this->_data = $model::connection()->cast($this, $this->_data, $options);
		}
	}