Index: modules/node/node.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/node/node.module,v
retrieving revision 1.967
diff -u -p -r1.967 node.module
--- modules/node/node.module	26 May 2008 17:12:55 -0000	1.967
+++ modules/node/node.module	19 Jun 2008 00:03:20 -0000
@@ -1355,6 +1355,13 @@ function node_ranking() {
       // The promote flag is either 0 or 1, which is automatically normalized.
       'score' => 'n.promote',
     ),
+    'links' => array(
+      'title' => t('Incoming Links'),
+      'score' => '2.0 - 2.0 / (1.0 + search_node_links_totals.count * %f)',
+      'join' => 'LEFT JOIN {search_node_links_totals} search_node_links_totals ON search_node_links_totals.sid = i.sid',
+      'arguments' => array(variable_get('node_rank_links', '0')),
+  )
+
   );
 
   // Add relevance based on creation or changed date.
Index: modules/search/search.install
===================================================================
RCS file: /cvs/drupal/drupal/modules/search/search.install,v
retrieving revision 1.15
diff -u -p -r1.15 search.install
--- modules/search/search.install	15 Mar 2008 12:31:29 -0000	1.15
+++ modules/search/search.install	19 Jun 2008 00:03:20 -0000
@@ -153,6 +153,73 @@ function search_schema() {
       'nid' => array('nid'),
     ),
   );
+  
+  $schema['search_node_links_totals'] = array(
+    'description' => t('Counts the number of incoming links for each node.'),
+    'fields' => array(
+      'sid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'deafult' => 0,
+        'description' => t('The {search_dataset}.sid of the searchable item containing the link to the node.')
+      ),
+      'type' => array(
+        'type' => 'varchar',
+        'length' => 16,
+        'not null' => TRUE,
+        'description' => t('The {search_dataset}.type of the searchable item containing the link to the node.')
+      ),
+      'count' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'description' => t('The number of links that the searchable item has linking to it')
+      ),
+    ),
+    'primary key' => array('sid'),
+    'indexes' => array(
+      'node_count' => array('count'),
+    ),
+  );
 
   return $schema;
 }
+
+function search_update_1() {
+  $ret = array();
+  
+  $schema['search_node_links_totals'] = array(
+    'description' => t('Counts the number of incoming links for each node.'),
+    'fields' => array(
+      'sid' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'deafult' => 0,
+        'description' => t('The {search_dataset}.sid of the searchable item containing the link to the node.')
+      ),
+      'type' => array(
+        'type' => 'varchar',
+        'length' => 16,
+        'not null' => TRUE,
+        'description' => t('The {search_dataset}.type of the searchable item containing the link to the node.')
+      ),
+      'count' => array(
+        'type' => 'int',
+        'unsigned' => TRUE,
+        'not null' => TRUE,
+        'default' => 0,
+        'description' => t('The number of links that the searchable item has linking to it')
+      ),
+    ),
+    'primary key' => array('sid'),
+    'indexes' => array(
+      'node_count' => array('count'),
+    ),
+  );
+  
+  db_create_table($ret, 'search_node_links_totals', $schema['search_node_links_totals']);
+  return $ret;
+}
Index: modules/search/search.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/search/search.module,v
retrieving revision 1.258
diff -u -p -r1.258 search.module
--- modules/search/search.module	26 May 2008 17:22:59 -0000	1.258
+++ modules/search/search.module	19 Jun 2008 00:03:21 -0000
@@ -613,6 +613,12 @@ function search_index($sid, $type, $text
     db_query("DELETE FROM {search_node_links} WHERE sid = %d AND type = '%s' AND nid = %d", $sid, $type, $nid);
     search_touch_node($nid);
   }
+  // Update node_links_totals count for this node
+  $count = db_result(db_query("SELECT COUNT(nid) as count FROM {search_node_links} WHERE nid = %d AND type = '%s'", $sid, $type));
+  $query = db_query("UPDATE {search_node_links_totals} SET count = %d WHERE sid = %d AND type = '%s'", $count, $sid, $type);
+  if (!db_affected_rows()) {
+    $query = db_query("INSERT INTO {search_node_links_totals} (sid, type, count) VALUES (%d, '%s', %d)", $sid, $type, $count);
+  }
 }
 
 /**