From 61dcf802c7deadf3a9cdd05537f958e110a33fdd Mon Sep 17 00:00:00 2001
From: Ryan Boren <ryan@git.wordpress.org>
Date: Wed, 27 Jan 2010 19:42:23 +0000
Subject: [PATCH] Change  back to an option so that it is always there and
 regenerate it after cleaning the cache instead of waiting for the next page
 load.  Don't clean taxonomy wide caches when just updating object counts to
 avoid cleaning  when updating a post.

git-svn-id: https://develop.svn.wordpress.org/trunk@12881 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/post.php     |  3 +--
 wp-includes/taxonomy.php | 23 +++++++++++++++--------
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/wp-includes/post.php b/wp-includes/post.php
index 73d5fbedae..2df6712ddc 100644
--- a/wp-includes/post.php
+++ b/wp-includes/post.php
@@ -2043,9 +2043,8 @@ function wp_insert_post($postarr = array(), $wp_error = false) {
 		wp_set_post_tags( $post_ID, $tags_input );
 	// new-style support for all tag-like taxonomies
 	if ( !empty($tax_input) ) {
-		foreach ( $tax_input as $taxonomy => $tags ) {
+		foreach ( $tax_input as $taxonomy => $tags )
 			wp_set_post_terms( $post_ID, $tags, $taxonomy );
-		}
 	}
 
 	$current_guid = get_post_field( 'guid', $post_ID );
diff --git a/wp-includes/taxonomy.php b/wp-includes/taxonomy.php
index 1a5609a1c1..b5e511b5ac 100644
--- a/wp-includes/taxonomy.php
+++ b/wp-includes/taxonomy.php
@@ -1867,7 +1867,7 @@ function wp_update_term_count_now( $terms, $taxonomy ) {
 
 	}
 
-	clean_term_cache($terms);
+	clean_term_cache($terms, '', false);
 
 	return true;
 }
@@ -1917,8 +1917,9 @@ function clean_object_term_cache($object_ids, $object_type) {
  *
  * @param int|array $ids Single or list of Term IDs
  * @param string $taxonomy Can be empty and will assume tt_ids, else will use for context.
+ * @param bool $clean_taxonomy Whether to clean taxonomy wide caches (true), or just individual term object caches (false). Default is true.
  */
-function clean_term_cache($ids, $taxonomy = '') {
+function clean_term_cache($ids, $taxonomy = '', $clean_taxonomy = true) {
 	global $wpdb;
 	static $cleaned = array();
 
@@ -1951,9 +1952,15 @@ function clean_term_cache($ids, $taxonomy = '') {
 		if ( isset($cleaned[$taxonomy]) )
 			continue;
 		$cleaned[$taxonomy] = true;
-		wp_cache_delete('all_ids', $taxonomy);
-		wp_cache_delete('get', $taxonomy);
-		delete_transient("{$taxonomy}_children");
+
+		if ( $clean_taxonomy ) {
+			wp_cache_delete('all_ids', $taxonomy);
+			wp_cache_delete('get', $taxonomy);
+			delete_option("{$taxonomy}_children");
+			// Regenerate {$taxonomy}_children
+			_get_term_hierarchy($taxonomy);
+		}
+
 		do_action('clean_term_cache', $ids, $taxonomy);
 	}
 
@@ -2092,17 +2099,17 @@ function update_term_cache($terms, $taxonomy = '') {
 function _get_term_hierarchy($taxonomy) {
 	if ( !is_taxonomy_hierarchical($taxonomy) )
 		return array();
-	$children = get_transient("{$taxonomy}_children");
+	$children = get_option("{$taxonomy}_children");
+
 	if ( is_array($children) )
 		return $children;
-
 	$children = array();
 	$terms = get_terms($taxonomy, array('get' => 'all', 'orderby' => 'id', 'fields' => 'id=>parent'));
 	foreach ( $terms as $term_id => $parent ) {
 		if ( $parent > 0 )
 			$children[$parent][] = $term_id;
 	}
-	set_transient("{$taxonomy}_children", $children);
+	update_option("{$taxonomy}_children", $children);
 
 	return $children;
 }