library/Zend/Json/Server/Cache.php

   1 <?php
   2 /**
   3  * Zend Framework
   4  *
   5  * LICENSE
   6  *
   7  * This source file is subject to the new BSD license that is bundled
   8  * with this package in the file LICENSE.txt.
   9  * It is also available through the world-wide-web at this URL:
  10  * http://framework.zend.com/license/new-bsd
  11  * If you did not receive a copy of the license and are unable to
  12  * obtain it through the world-wide-web, please send an email
  13  * to license@zend.com so we can send you a copy immediately.
  14  *
  15  * @category   Zend
  16  * @package    Zend_Json
  17  * @subpackage Server
  18  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  19  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  20  * @version    $Id: Cache.php 16971 2009-07-22 18:05:45Z mikaelkael $
  21  */
  22
  23 /** Zend_Server_Cache */
  24 require_once 'Zend/Server/Cache.php';
  25
  26 /**
  27  * Zend_Json_Server_Cache: cache Zend_Json_Server server definition and SMD
  28  *
  29  * @category   Zend
  30  * @package    Zend_Json
  31  * @subpackage Server
  32  * @copyright  Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
  33  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  34  */
  35 class Zend_Json_Server_Cache extends Zend_Server_Cache
  36 {
  37     /**
  38      * Cache a service map description (SMD) to a file
  39      *
  40      * Returns true on success, false on failure
  41      *
  42      * @param  string $filename
  43      * @param  Zend_Json_Server $server
  44      * @return boolean
  45      */
  46     public static function saveSmd($filename, Zend_Json_Server $server)
  47     {
  48         if (!is_string($filename)
  49             || (!file_exists($filename) && !is_writable(dirname($filename))))
  50         {
  51             return false;
  52         }
  53
  54         if (0 === @file_put_contents($filename, $server->getServiceMap()->toJson())) {
  55             return false;
  56         }
  57
  58         return true;
  59     }
  60
  61     /**
  62      * Retrieve a cached SMD
  63      *
  64      * On success, returns the cached SMD (a JSON string); an failure, returns
  65      * boolean false.
  66      *
  67      * @param  string $filename
  68      * @return string|false
  69      */
  70     public static function getSmd($filename)
  71     {
  72         if (!is_string($filename)
  73             || !file_exists($filename)
  74             || !is_readable($filename))
  75         {
  76             return false;
  77         }
  78
  79
  80         if (false === ($smd = @file_get_contents($filename))) {
  81             return false;
  82         }
  83
  84         return $smd;
  85     }
  86
  87     /**
  88      * Delete a file containing a cached SMD
  89      *
  90      * @param  string $filename
  91      * @return bool
  92      */
  93     public static function deleteSmd($filename)
  94     {
  95         if (is_string($filename) && file_exists($filename)) {
  96             unlink($filename);
  97             return true;
  98         }
  99
 100         return false;
 101     }
 102 }