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   1  <?php
   2  /*
   3   * Copyright 2014 Google Inc.
   4   *
   5   * Licensed under the Apache License, Version 2.0 (the "License");
   6   * you may not use this file except in compliance with the License.
   7   * You may obtain a copy of the License at
   8   *
   9   *     http://www.apache.org/licenses/LICENSE-2.0
  10   *
  11   * Unless required by applicable law or agreed to in writing, software
  12   * distributed under the License is distributed on an "AS IS" BASIS,
  13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14   * See the License for the specific language governing permissions and
  15   * limitations under the License.
  16   */
  17  
  18  require_once "Google/Cache/Abstract.php";
  19  require_once "Google/Cache/Exception.php";
  20  
  21  /**
  22   * A blank storage class, for cases where caching is not
  23   * required.
  24   */
  25  class Google_Cache_Null extends Google_Cache_Abstract
  26  {
  27    public function __construct(Google_Client $client)
  28    {
  29  
  30    }
  31  
  32     /**
  33     * @inheritDoc
  34     */
  35    public function get($key, $expiration = false)
  36    {
  37      return false;
  38    }
  39  
  40    /**
  41     * @inheritDoc
  42     */
  43    public function set($key, $value)
  44    {
  45      // Nop.
  46    }
  47  
  48    /**
  49     * @inheritDoc
  50     * @param String $key
  51     */
  52    public function delete($key)
  53    {
  54      // Nop.
  55    }
  56  }