From 634379299f7ab35bf64504718a77d00767fa2dfa Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Sun, 4 Jan 2009 19:56:51 +0000
Subject: - Patch #320591 by Moshe, Crell et al: tag specific alter hook for
 database queries.

---
 includes/database/select.inc | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'includes/database/select.inc')

diff --git a/includes/database/select.inc b/includes/database/select.inc
index a8e763146..532b2e5a1 100644
--- a/includes/database/select.inc
+++ b/includes/database/select.inc
@@ -291,7 +291,13 @@ class SelectQuery extends Query implements QueryConditionInterface, QueryAlterab
   }
 
   public function execute() {
+    // Modules may alter all queries or only those having a particular tag.
     drupal_alter('query', $this);
+    if (isset($this->alterTags)) {
+      foreach ($this->alterTags as $tag => $value) {
+        drupal_alter("query_$tag", $this);
+      }
+    }
 
     $args = $this->getArguments();
 
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