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

		$this->_operators += array(
			'like' => function($key, $value) { return new MongoRegex($value); }
		);

		$this->_handlers += array(
			'id' => function($v) {
				return is_string($v) && preg_match('/^[0-9a-f]{24}$/', $v) ? new MongoId($v) : $v;
			},
			'date' => function($v) {
				$v = is_numeric($v) ? intval($v) : strtotime($v);
				return (!$v || time() == $v) ? new MongoDate() : new MongoDate($v);
			},
			'regex'   => function($v) { return new MongoRegex($v); },
			'integer' => function($v) { return (integer) $v; },
			'float'   => function($v) { return (float) $v; },
			'boolean' => function($v) { return (boolean) $v; },
			'code'    => function($v) { return new MongoCode($v); },
			'binary'  => function($v) { return new MongoBinData($v); }
		);
	}