Loader.php

<?php
class Dsao_Cache_Loader
{
  protected static $_backendName = 'File';

  protected static $_backendOptions = array();

  protected $_cache = null;

  public function __construct($frontendName = 'Core', array $frontendOptions = array())
  {
    // Beim Debuggen aktivieren
    //$frontendOptions['caching'] = false;

    $this->_cache = Zend_Cache::factory(
      (string) $frontendName, self::$_backendName,
      $frontendOptions, self::$_backendOptions);
  }

  public function getObject($class, $id = null, $constructorParameters = null, array $tags = array())
  {
    // Falls keine ID übergeben wurde, Klassennamen nehmen
    $id = $id ? $id : $class;

    // Cache miss
    if (!$this->_cache->test($id))
    {
      $constructor = new $class();

      // Falls Konstruktor verwendet werden soll
      if ($constructor instanceof Dsao_Constructor_Interface)
      {
        // Objekt instanziieren lassen
        $object = call_user_func_array(array($constructor, 'getObject'),
          (array) $constructorParameters);
      }
      // Sonst gibt es keinen Konstruktor
      else
      {
        $object = $constructor;
      }

      // In Cache speichern
      $this->_cache->save($object, $id, $tags);
    }
    // Cache hit
    else
    {
      $object = $this->_cache->load($id);
    }

    return $object;
  }

  public static function getBackendName()
  {
    return self::$_backendName;
  }

  public static function getBackendOptions()
  {
    return self::$_backendOptions;
  }

  public function getCache()
  {
    return $this->_cache;
  }

  public static function setBackendName($backendName)
  {
    self::$_backendName = $backendName;
  }

  public static function setBackendOptions(array $backendOptions)
  {
    self::$_backendOptions = $backendOptions;
  }
}