From a08490364d081ff5030ab45d612235cb0ed6299c Mon Sep 17 00:00:00 2001
From: Robin Appelman <icewind@owncloud.com>
Date: Tue, 15 Jan 2013 20:20:39 +0100
Subject: [PATCH] Cache prepared statements in OC_DB
---
lib/db.php | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/lib/db.php b/lib/db.php
index 74e7ca5b0e..c5908afe69 100644
--- a/lib/db.php
+++ b/lib/db.php
@@ -41,6 +41,8 @@ class OC_DB {
const BACKEND_PDO=0;
const BACKEND_MDB2=1;
+ static private $preparedQueries = array();
+
/**
* @var MDB2_Driver_Common
*/
@@ -321,7 +323,12 @@ class OC_DB {
$query.=$limitsql;
}
}
+ } else {
+ if (isset(self::$preparedQueries[$query])) {
+ return self::$preparedQueries[$query];
+ }
}
+ $rawQuery = $query;
// Optimize the query
$query = self::processQuery( $query );
@@ -343,6 +350,9 @@ class OC_DB {
}
$result=new PDOStatementWrapper($result);
}
+ if (is_null($limit) || $limit == -1) {
+ self::$preparedQueries[$rawQuery] = $result;
+ }
return $result;
}
--
GitLab