CRM/Utils/Cache/NoCache.php

   1 <?php
   2 /*
   3  +--------------------------------------------------------------------+
   4  | CiviCRM version 4.7                                                |
   5  +--------------------------------------------------------------------+
   6  | Copyright CiviCRM LLC (c) 2004-2015                                |
   7  +--------------------------------------------------------------------+
   8  | This file is a part of CiviCRM.                                    |
   9  |                                                                    |
  10  | CiviCRM is free software; you can copy, modify, and distribute it  |
  11  | under the terms of the GNU Affero General Public License           |
  12  | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
  13  |                                                                    |
  14  | CiviCRM is distributed in the hope that it will be useful, but     |
  15  | WITHOUT ANY WARRANTY; without even the implied warranty of         |
  16  | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
  17  | See the GNU Affero General Public License for more details.        |
  18  |                                                                    |
  19  | You should have received a copy of the GNU Affero General Public   |
  20  | License and the CiviCRM Licensing Exception along                  |
  21  | with this program; if not, contact CiviCRM LLC                     |
  22  | at info[AT]civicrm[DOT]org. If you have questions about the        |
  23  | GNU Affero General Public License or the licensing of CiviCRM,     |
  24  | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
  25  +--------------------------------------------------------------------+
  26  */
  27
  28 /**
  29  *
  30  * @package CRM
  31  * @copyright CiviCRM LLC (c) 2004-2015
  32  * $Id$
  33  *
  34  */
  35 class CRM_Utils_Cache_NoCache implements CRM_Utils_Cache_Interface {
  36
  37   /**
  38    * We only need one instance of this object. So we use the singleton
  39    * pattern and cache the instance in this variable
  40    *
  41    * @var object
  42    */
  43   static private $_singleton = NULL;
  44
  45   /**
  46    * Constructor.
  47    *
  48    * @param array $config
  49    *   An array of configuration params.
  50    *
  51    * @return \CRM_Utils_Cache_NoCache
  52    */
  53   public function __construct($config) {
  54   }
  55
  56   /**
  57    * @param string $key
  58    * @param mixed $value
  59    *
  60    * @return bool
  61    */
  62   public function set($key, &$value) {
  63     return FALSE;
  64   }
  65
  66   /**
  67    * @param string $key
  68    *
  69    * @return null
  70    */
  71   public function get($key) {
  72     return NULL;
  73   }
  74
  75   /**
  76    * @param string $key
  77    *
  78    * @return bool
  79    */
  80   public function delete($key) {
  81     return FALSE;
  82   }
  83
  84   /**
  85    * @return bool
  86    */
  87   public function flush() {
  88     return FALSE;
  89   }
  90
  91 }