woothemes/woocommerce

<?php
/**
 * Order Data Store Interface
 *
 * @version 3.0.0
 * @package WooCommerce\Interfaces
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

/**
 * WC Order Data Store Interface
 *
 * Functions that must be defined by order store classes.
 *
 * @version  3.0.0
 */
interface WC_Abstract_Order_Data_Store_Interface {

    /**
     * Read order items of a specific type from the database for this order.
     *
     * @param WC_Order $order Order object.
     * @param string   $type Order item type.
     * @return array
     */
    public function read_items( $order, $type );

    /**
     * Remove all line items (products, coupons, shipping, taxes) from the order.
     *
     * @param WC_Order $order Order object.
     * @param string   $type Order item type. Default null.
     */
    public function delete_items( $order, $type = null );

    /**
     * Get token ids for an order.
     *
     * @param WC_Order $order Order object.
     * @return array
     */
    public function get_payment_token_ids( $order );

    /**
     * Update token ids for an order.
     *
     * @param WC_Order $order Order object.
     * @param array    $token_ids Token IDs.
     */
    public function update_payment_token_ids( $order, $token_ids );
}