Updates to 7.5.0

includes/core/interfaces/interface-wcs-cache-updater.php

@@ -0,0 +1,43 @@
+<?php
+/**
+ * WCS_Cache_Updater Interface
+ *
+ * Define methods that can be reliably used to update a cache on an object.
+ *
+ * @author   Prospress
+ * @category Admin
+ * @package  WooCommerce Subscriptions/Admin
+ * @version  1.0.0 - Migrated from WooCommerce Subscriptions v2.3
+ * @since    1.0.0 - Migrated from WooCommerce Subscriptions v2.3
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	exit;
+} // Exit if accessed directly
+
+/**
+ * WCS_Cache_Updater Interface
+ *
+ * Define a set of methods that can be used to update a cache
+ */
+interface WCS_Cache_Updater {
+
+	/**
+	 * Get the items to be updated, if any.
+	 *
+	 * @return array An array of items to update, or empty array if there are no items to update.
+	 */
+	public function get_items_to_update();
+
+	/**
+	 * Update for a single item, of the form returned by get_items_to_update().
+	 *
+	 * @param mixed $item The item to update.
+	 */
+	public function update_items_cache( $item );
+
+	/**
+	 * Clear all caches for all items.
+	 */
+	public function delete_all_caches();
+}