From 9329b16ab13f3a4caf107df358c3c58bda2dcd8a Mon Sep 17 00:00:00 2001
From: Igor Wiedler <igor@wiedler.ch>
Date: Wed, 3 Nov 2010 18:35:31 +0100
Subject: [task/acm-refactor] Refactor the ACM classes to have a common
 interface.

They are now refered to as cache drivers rather than ACM classes. The
additional utility functions from the original cache class have been
moved to the cache_service. The class loader is now instantiated without
a cache instance and passed one as soon as it is constructed to allow
autoloading the cache classes.

PHPBB3-9983
---
 phpBB/includes/cache/driver/null.php | 154 +++++++++++++++++++++++++++++++++++
 1 file changed, 154 insertions(+)
 create mode 100644 phpBB/includes/cache/driver/null.php

(limited to 'phpBB/includes/cache/driver/null.php')

diff --git a/phpBB/includes/cache/driver/null.php b/phpBB/includes/cache/driver/null.php
new file mode 100644
index 0000000000..0a520b572e
--- /dev/null
+++ b/phpBB/includes/cache/driver/null.php
@@ -0,0 +1,154 @@
+<?php
+/**
+*
+* @package acm
+* @version $Id$
+* @copyright (c) 2005, 2009 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* ACM Null Caching
+* @package acm
+*/
+class phpbb_cache_driver_null extends phpbb_cache_driver_base
+{
+	/**
+	* Set cache path
+	*/
+	function __construct()
+	{
+	}
+
+	/**
+	* Load global cache
+	*/
+	function load()
+	{
+		return true;
+	}
+
+	/**
+	* Unload cache object
+	*/
+	function unload()
+	{
+	}
+
+	/**
+	* Save modified objects
+	*/
+	function save()
+	{
+	}
+
+	/**
+	* Tidy cache
+	*/
+	function tidy()
+	{
+		// This cache always has a tidy room.
+		set_config('cache_last_gc', time(), true);
+	}
+
+	/**
+	* Get saved cache object
+	*/
+	function get($var_name)
+	{
+		return false;
+	}
+
+	/**
+	* Put data into cache
+	*/
+	function put($var_name, $var, $ttl = 0)
+	{
+	}
+
+	/**
+	* Purge cache data
+	*/
+	function purge()
+	{
+	}
+
+	/**
+	* Destroy cache data
+	*/
+	function destroy($var_name, $table = '')
+	{
+	}
+
+	/**
+	* Check if a given cache entry exist
+	*/
+	function _exists($var_name)
+	{
+		return false;
+	}
+
+	/**
+	* Load cached sql query
+	*/
+	function sql_load($query)
+	{
+		return false;
+	}
+
+	/**
+	* Save sql query
+	*/
+	function sql_save($query, &$query_result, $ttl)
+	{
+	}
+
+	/**
+	* Ceck if a given sql query exist in cache
+	*/
+	function sql_exists($query_id)
+	{
+		return false;
+	}
+
+	/**
+	* Fetch row from cache (database)
+	*/
+	function sql_fetchrow($query_id)
+	{
+		return false;
+	}
+
+	/**
+	* Fetch a field from the current row of a cached database result (database)
+	*/
+	function sql_fetchfield($query_id, $field)
+	{
+		return false;
+	}
+
+	/**
+	* Seek a specific row in an a cached database result (database)
+	*/
+	function sql_rowseek($rownum, $query_id)
+	{
+		return false;
+	}
+
+	/**
+	* Free memory used for a cached database result (database)
+	*/
+	function sql_freeresult($query_id)
+	{
+		return false;
+	}
+}
-- 
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