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   1  <?php
   2  /**
   3  *
   4  * @package acm
   5  * @version $Id$
   6  * @copyright (c) 2005, 2009 phpBB Group
   7  * @license http://opensource.org/licenses/gpl-license.php GNU Public License
   8  *
   9  */
  10  
  11  /**
  12  * @ignore
  13  */
  14  if (!defined('IN_PHPBB'))
  15  {
  16      exit;
  17  }
  18  
  19  /**
  20  * ACM Null Caching
  21  * @package acm
  22  */
  23  class acm
  24  {
  25      /**
  26      * Set cache path
  27      */
  28  	function acm()
  29      {
  30      }
  31  
  32      /**
  33      * Load global cache
  34      */
  35  	function load()
  36      {
  37          return true;
  38      }
  39  
  40      /**
  41      * Unload cache object
  42      */
  43  	function unload()
  44      {
  45      }
  46  
  47      /**
  48      * Save modified objects
  49      */
  50  	function save()
  51      {
  52      }
  53  
  54      /**
  55      * Tidy cache
  56      */
  57  	function tidy()
  58      {
  59          // This cache always has a tidy room.
  60          set_config('cache_last_gc', time(), true);
  61      }
  62  
  63      /**
  64      * Get saved cache object
  65      */
  66  	function get($var_name)
  67      {
  68          return false;
  69      }
  70  
  71      /**
  72      * Put data into cache
  73      */
  74  	function put($var_name, $var, $ttl = 0)
  75      {
  76      }
  77  
  78      /**
  79      * Purge cache data
  80      */
  81  	function purge()
  82      {
  83      }
  84  
  85      /**
  86      * Destroy cache data
  87      */
  88  	function destroy($var_name, $table = '')
  89      {
  90      }
  91  
  92      /**
  93      * Check if a given cache entry exist
  94      */
  95  	function _exists($var_name)
  96      {
  97          return false;
  98      }
  99  
 100      /**
 101      * Load cached sql query
 102      */
 103  	function sql_load($query)
 104      {
 105          return false;
 106      }
 107  
 108      /**
 109      * Save sql query
 110      */
 111  	function sql_save($query, &$query_result, $ttl)
 112      {
 113      }
 114  
 115      /**
 116      * Ceck if a given sql query exist in cache
 117      */
 118  	function sql_exists($query_id)
 119      {
 120          return false;
 121      }
 122  
 123      /**
 124      * Fetch row from cache (database)
 125      */
 126  	function sql_fetchrow($query_id)
 127      {
 128          return false;
 129      }
 130  
 131      /**
 132      * Fetch a field from the current row of a cached database result (database)
 133      */
 134  	function sql_fetchfield($query_id, $field)
 135      {
 136          return false;
 137      }
 138  
 139      /**
 140      * Seek a specific row in an a cached database result (database)
 141      */
 142  	function sql_rowseek($rownum, $query_id)
 143      {
 144          return false;
 145      }
 146  
 147      /**
 148      * Free memory used for a cached database result (database)
 149      */
 150  	function sql_freeresult($query_id)
 151      {
 152          return false;
 153      }
 154  }
 155  
 156  ?>