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   1  <?php
   2  /*
   3   * Limb PHP Framework
   4   *
   5   * @link http://limb-project.com 
   6   * @copyright  Copyright &copy; 2004-2007 BIT(http://bit-creative.com)
   7   * @license    LGPL http://www.gnu.org/copyleft/lesser.html 
   8   */
   9  
  10  /**

  11   * class lmbFullPageCache.

  12   *

  13   * @package web_cache

  14   * @version $Id: lmbFullPageCache.class.php 5945 2007-06-06 08:31:43Z pachanga $

  15   */
  16  class lmbFullPageCache
  17  {
  18    protected $policy;
  19    protected $cache_writer;
  20    protected $session_opened = false;
  21    protected $cache_request;
  22  
  23    function __construct($cache_writer, $policy)
  24    {
  25      $this->cache_writer = $cache_writer;
  26      $this->policy = $policy;
  27    }
  28  
  29    protected function _isValidSession()
  30    {
  31      return ($this->session_opened && is_object($this->cache_request));
  32    }
  33  
  34    function get()
  35    {
  36      if(!$this->_isValidSession())
  37        return false;
  38  
  39      return $this->cache_writer->get($this->_getHash());
  40    }
  41  
  42    function save($content)
  43    {
  44      if(!$this->_isValidSession())
  45        return false;
  46  
  47      return $this->cache_writer->save($this->_getHash(), $content);
  48    }
  49  
  50    protected function _getHash()
  51    {
  52      return $this->cache_request->getHash();
  53    }
  54  
  55    function openSession($cache_request)
  56    {
  57      $this->session_opened = false;
  58  
  59      if(!$ruleset = $this->policy->findRuleset($cache_request))
  60        return false;
  61  
  62      if($ruleset->isDeny())
  63        return false;
  64  
  65      $this->session_opened = true;
  66      $this->cache_request = $cache_request;
  67  
  68      return true;
  69    }
  70  
  71    function flush($hash = null)
  72    {
  73      if(!$hash)
  74        $this->cache_writer->flushAll();
  75      else
  76        $this->cache_writer->flush($hash);
  77    }
  78  }
  79  
  80  ?>