From 2b5351ae95ec1cae0799cb12704dd6f125cadf52 Mon Sep 17 00:00:00 2001
From: Mike Jolley <mike.jolley@me.com>
Date: Thu, 20 Mar 2014 11:20:54 +0000
Subject: [PATCH] Related to #5041, there is not a way to retrieve these
 dynamic transient names and use delete_transient, so if using object caching
 we must flush

---
 includes/wc-product-functions.php | 47 ++++++++-----------------------
 1 file changed, 12 insertions(+), 35 deletions(-)

diff --git a/includes/wc-product-functions.php b/includes/wc-product-functions.php
index 956ba02d22f..cf7a90f5d23 100644
--- a/includes/wc-product-functions.php
+++ b/includes/wc-product-functions.php
@@ -79,6 +79,11 @@ function wc_product_dimensions_enabled() {
 function wc_delete_product_transients( $post_id = 0 ) {
 	global $wpdb;
 
+	if ( wp_using_ext_object_cache() ) {
+		wp_cache_flush(); // There isn't a reliable method of looking up the names, so flush the cache.
+		return;
+	} 
+
 	$post_id = absint( $post_id );
 
 	// Clear core transients
@@ -91,23 +96,10 @@ function wc_delete_product_transients( $post_id = 0 ) {
 	);
 
 	// Clear transients for which we don't have the name
-	if ( wp_using_ext_object_cache() ) {
-		global $wp_object_cache;
-
-		if ( isset( $wp_object_cache->cache['transient'] ) ) {
-			$keys = array_keys( $wp_object_cache->cache['transient'] );
-			foreach ( $keys as $key ) {
-				if ( strpos( $key, 'wc_uf_pid_' ) === 0 || strpos( $key, 'wc_ship_' ) === 0 || strpos( $key, 'wc_products_will_display_' ) === 0 || strpos( $key, 'wc_ln_count_' ) === 0 ) {
-					$transients_to_clear[] = $key;
-				}
-			}
-		}
-	} else {
-		$wpdb->query( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE ('_transient_wc_uf_pid_%') OR `option_name` LIKE ('_transient_timeout_wc_uf_pid_%')" );
-		$wpdb->query( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE ('_transient_wc_ln_count_%') OR `option_name` LIKE ('_transient_timeout_wc_ln_count_%')" );
-		$wpdb->query( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE ('_transient_wc_ship_%') OR `option_name` LIKE ('_transient_timeout_wc_ship_%')" );
-		$wpdb->query( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE ('_transient_wc_products_will_display_%') OR `option_name` LIKE ('_transient_timeout_wc_products_will_display_%')" );
-	}
+	$wpdb->query( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE ('_transient_wc_uf_pid_%') OR `option_name` LIKE ('_transient_timeout_wc_uf_pid_%')" );
+	$wpdb->query( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE ('_transient_wc_ln_count_%') OR `option_name` LIKE ('_transient_timeout_wc_ln_count_%')" );
+	$wpdb->query( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE ('_transient_wc_ship_%') OR `option_name` LIKE ('_transient_timeout_wc_ship_%')" );
+	$wpdb->query( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE ('_transient_wc_products_will_display_%') OR `option_name` LIKE ('_transient_timeout_wc_products_will_display_%')" );
 
 	// Clear product specific transients
 	$post_transient_names = array(
@@ -122,27 +114,12 @@ function wc_delete_product_transients( $post_id = 0 ) {
 			$transients_to_clear[] = $transient . $post_id;
 		}
 	} else {
-		if ( wp_using_ext_object_cache() ) {
-			global $wp_object_cache;
-
-			if ( isset( $wp_object_cache->cache['transient'] ) ) {
-				$keys = array_keys( $wp_object_cache->cache['transient'] );
-				foreach( $post_transient_names as $transient ) {
-					foreach ( $keys as $key ) {
-						if ( strpos( $key, $transient ) === 0 ) {
-							$transients_to_clear[] = $key;
-						}
-					}
-				}
-			}
-		} else {
-			foreach( $post_transient_names as $transient ) {
-				$wpdb->query( $wpdb->prepare( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE %s OR `option_name` LIKE %s", '_transient_' . $transient . '%', '_transient_timeout_' . $transient . '%' ) );
-			}
+		foreach( $post_transient_names as $transient ) {
+			$wpdb->query( $wpdb->prepare( "DELETE FROM `$wpdb->options` WHERE `option_name` LIKE %s OR `option_name` LIKE %s", '_transient_' . $transient . '%', '_transient_timeout_' . $transient . '%' ) );
 		}
 	}
 
-	// Clear transients where we have names
+	// Delete transients
 	foreach( $transients_to_clear as $transient ) {
 		delete_transient( $transient );
 	}