[Summary view] [Print] [Text view]

   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  require_once('limb/wact/src/components/WactClassPath.class.php');
  10  require_once('limb/wact/src/components/iterator/WactBaseIteratorComponent.class.php');
  11  
  12  /**

  13   * class WactFetchComponent.

  14   *

  15   * @package wact

  16   * @version $Id$

  17   */
  18  class WactFetchComponent extends WactBaseIteratorComponent
  19  {
  20    protected $fetcher_name;
  21    protected $include_path;
  22    protected $params = array();
  23    protected $dataset = null;
  24    protected $cache_dataset = true;
  25    protected $reserved_params = array('limit', 'offset', 'order');
  26  
  27    function setFetcherName($fetcher_name)
  28    {
  29      $this->fetcher_name = $fetcher_name;
  30    }
  31  
  32    function setIncludePath($include_path)
  33    {
  34      $this->include_path = $include_path;
  35    }
  36  
  37    function setAdditionalParam($param, $value)
  38    {
  39      $this->params[$param] = $value;
  40    }
  41  
  42    function setCacheDataset($flag)
  43    {
  44      $this->cache_dataset = $flag;
  45    }
  46  
  47    function getDataset()
  48    {
  49      if($this->dataset !== null && (boolean)$this->cache_dataset)
  50        return $this->dataset;
  51  
  52      $fetcher = $this->_createFetcher();
  53  
  54      $this->dataset = $fetcher->fetch();
  55  
  56      return $this->dataset;
  57    }
  58  
  59    protected function _createFetcher()
  60    {
  61      $class_path = new WactClassPath($this->fetcher_name, $this->include_path);
  62      $fetcher = $class_path->createObject();
  63  
  64      foreach($this->params as $param => $value)
  65      {
  66        $method = WactTemplate :: toStudlyCaps('set_' . $param, false);
  67        if(in_array($param, $this->reserved_params))
  68          $this->$method($value);
  69        elseif(method_exists($fetcher, $method))
  70          $fetcher->$method($value);
  71        else
  72          throw new WactException('Fetcher "' .$this->fetcher_name. '" does not support method: '. $method);
  73      }
  74  
  75      return $fetcher;
  76    }
  77  }
  78  ?>