From 9df38a58a4430e544e484e74bba37825914317f0 Mon Sep 17 00:00:00 2001
From: Angie Byron <webchick@24967.no-reply.drupal.org>
Date: Wed, 20 May 2009 05:39:45 +0000
Subject: [PATCH] #457080 by moshe weitzman: Add node_delete_multiple() for
 more efficient deletion of lots of nodes.

---
 modules/node/node.admin.inc | 12 +++------
 modules/node/node.module    | 50 +++++++++++++++++++++++--------------
 modules/node/node.pages.inc |  3 +++
 3 files changed, 38 insertions(+), 27 deletions(-)

diff --git a/modules/node/node.admin.inc b/modules/node/node.admin.inc
index 943dd5c8108..60ef89ef521 100644
--- a/modules/node/node.admin.inc
+++ b/modules/node/node.admin.inc
@@ -620,7 +620,6 @@ function theme_node_admin_nodes($form) {
 }
 
 function node_multiple_delete_confirm(&$form_state, $nodes) {
-
   $form['nodes'] = array('#prefix' => '<ul>', '#suffix' => '</ul>', '#tree' => TRUE);
   // array_filter returns only elements with TRUE values
   foreach ($nodes as $nid => $value) {
@@ -645,13 +644,10 @@ function node_multiple_delete_confirm(&$form_state, $nodes) {
 
 function node_multiple_delete_confirm_submit($form, &$form_state) {
   if ($form_state['values']['confirm']) {
-    foreach ($form_state['values']['nodes'] as $nid => $value) {
-      node_delete($nid);
-    }
-    $message = format_plural(count($form_state['values']['nodes']),
-                            'The item has been deleted.',
-                            'The items have been deleted.');
-    drupal_set_message($message);
+    node_delete_multiple(array_keys($form_state['values']['nodes']));
+    $count = count($form_state['values']['nodes']);
+    watchdog('content', 'Deleted @count posts.', array('@count' => $count));
+    drupal_set_message(t('Deleted @count posts.', array('@count' => $count)));
   }
   $form_state['redirect'] = 'admin/content/node';
   return;
diff --git a/modules/node/node.module b/modules/node/node.module
index c79931f605b..8fb23c6a446 100644
--- a/modules/node/node.module
+++ b/modules/node/node.module
@@ -782,7 +782,8 @@ function node_invoke($node, $hook, $a2 = NULL, $a3 = NULL, $a4 = NULL) {
  *   An array of node objects indexed by nid.
  */
 function node_load_multiple($nids = array(), $conditions = array(), $reset = FALSE) {
-  static $node_cache = array();
+  $node_cache = &drupal_static(__FUNCTION__, array());
+
   if ($reset) {
     $node_cache = array();
   }
@@ -934,7 +935,7 @@ function node_load_multiple($nids = array(), $conditions = array(), $reset = FAL
  * @param $vid
  *   The revision ID.
  * @param $reset
- *   Whether to reset the internal node_load cache.
+ *   Whether to reset the node_load_multiple cache.
  *
  * @return
  *   A fully-populated node object.
@@ -1154,39 +1155,50 @@ function _node_save_revision($node, $uid, $update = NULL) {
 
 /**
  * Delete a node.
+ *
+ * @param $nid
+ *   A node ID.
  */
 function node_delete($nid) {
+  node_delete_multiple(array($nid));
+}
 
-  $node = node_load($nid);
+/**
+ * Delete multiple nodes.
+ *
+ * @param $nids
+ *   An array of node IDs.
+ */
+function node_delete_multiple($nids) {
+  $nodes = node_load_multiple($nids, array());
 
-  if (node_access('delete', $node)) {
-    db_delete('node')
-      ->condition('nid', $node->nid)
-      ->execute();
-    db_delete('node_revision')
-      ->condition('nid', $node->nid)
-      ->execute();
-    db_delete('history')
-      ->condition('nid', $node->nid)
-      ->execute();
+  db_delete('node')
+    ->condition('nid', $nids, 'IN')
+    ->execute();
+  db_delete('node_revision')
+    ->condition('nid', $nids, 'IN')
+    ->execute();
+  db_delete('history')
+    ->condition('nid', $nids, 'IN')
+    ->execute();
 
+  foreach ($nodes as $nid => $node) {
     // Call the node-specific callback (if any):
     node_invoke($node, 'delete');
     module_invoke_all('node_delete', $node);
 
-    // Clear the page and block caches.
-    cache_clear_all();
-
     // Remove this node from the search index if needed.
     // This code is implemented in node module rather than in search module,
     // because node module is implementing search module's API, not the other
     // way around.
     if (module_exists('search')) {
-      search_wipe($node->nid, 'node');
+      search_wipe($nid, 'node');
     }
-    watchdog('content', '@type: deleted %title.', array('@type' => $node->type, '%title' => $node->title));
-    drupal_set_message(t('@type %title has been deleted.', array('@type' => node_get_types('name', $node), '%title' => $node->title)));
   }
+
+  // Clear the page and block and node_load_multiple caches.
+  cache_clear_all();
+  drupal_static_reset('node_load_multiple');
 }
 
 /**
diff --git a/modules/node/node.pages.inc b/modules/node/node.pages.inc
index 8b0dbfd917a..1271efd4264 100644
--- a/modules/node/node.pages.inc
+++ b/modules/node/node.pages.inc
@@ -521,7 +521,10 @@ function node_delete_confirm(&$form_state, $node) {
  */
 function node_delete_confirm_submit($form, &$form_state) {
   if ($form_state['values']['confirm']) {
+    $node = node_load($form_state['values']['nid']);
     node_delete($form_state['values']['nid']);
+    watchdog('content', '@type: deleted %title.', array('@type' => $node->type, '%title' => $node->title));
+    drupal_set_message(t('@type %title has been deleted.', array('@type' => node_get_types('name', $node), '%title' => $node->title)));
   }
 
   $form_state['redirect'] = '<front>';