public function read( &$item ) {
		global $wpdb;

		$item->set_defaults();

		// Get from cache if available.
		$data = wp_cache_get( 'item-' . $item->get_id(), 'order-items' );

		if ( false === $data ) {
			$data = $wpdb->get_row( $wpdb->prepare( "SELECT order_id, order_item_name FROM {$wpdb->prefix}woocommerce_order_items WHERE order_item_id = %d LIMIT 1;", $item->get_id() ) );
			wp_cache_set( 'item-' . $item->get_id(), $data, 'order-items' );
		}

		if ( ! $data ) {
			throw new Exception( __( 'Invalid order item.', 'woocommerce' ) );
		}

		$item->set_props(
			array(
				'order_id' => $data->order_id,
				'name'     => $data->order_item_name,
			)
		);
		$item->read_meta_data();
	}