diff --git a/framework/base/Controller.php b/framework/base/Controller.php
index 7f232ac..a93414e 100644
--- a/framework/base/Controller.php
+++ b/framework/base/Controller.php
@@ -16,9 +16,7 @@ namespace yii\base;
  *
  * 1. [[authorize]]
  * 2. [[beforeAction]]
- * 3. [[beforeRender]]
- * 4. [[afterRender]]
- * 5. [[afterAction]]
+ * 3. [[afterAction]]
  *
  * @property array $actionParams the request parameters (name-value pairs) to be used for action parameter binding
  * @property string $route the route (module ID, controller ID and action ID) of the current request.
@@ -283,40 +281,9 @@ class Controller extends Component implements Initable
 		$this->trigger(__METHOD__, new ActionEvent($action));
 	}
 
-	/**
-	 * This method is invoked right before an action renders its result using [[render()]].
-	 * @param string $view the view to be rendered
-	 * @return boolean whether the action should continue to render.
-	 */
-	public function beforeRender($view)
-	{
-		$event = new RenderEvent($view);
-		$this->trigger(__METHOD__, $event);
-		return $event->isValid;
-	}
-
-	/**
-	 * This method is invoked right after an action renders its result using [[render()]].
-	 * @param string $view the view just rendered
-	 * @param string $content the content to be displayed
-	 * @return string the content to be displayed. This may be the same as the input content or the one
-	 * modified by event handlers.
-	 */
-	public function afterRender($view, $content)
-	{
-		$event = new RenderEvent($view, $content);
-		$this->trigger(__METHOD__, $event);
-		return $event->content;
-	}
-
 	public function render($view, $params = array())
 	{
-		if ($this->beforeRender($view)) {
-			$content = $this->createView()->render($view, $params);
-			$content = $this->afterRender($view, $content);
-			return $content;
-		}
-		return '';
+		return $this->createView()->render($view, $params);
 	}
 
 	public function renderText($text)
diff --git a/framework/base/RenderEvent.php b/framework/base/RenderEvent.php
deleted file mode 100644
index 7c1c817..0000000
--- a/framework/base/RenderEvent.php
+++ /dev/null
@@ -1,43 +0,0 @@
-<?php
-/**
- * RenderEvent class file.
- *
- * @link http://www.yiiframework.com/
- * @copyright Copyright &copy; 2008-2012 Yii Software LLC
- * @license http://www.yiiframework.com/license/
- */
-
-namespace yii\base;
-
-/**
- * RenderEvent represents the event parameter used for when calling [[Controller::render()]].
- *
- * By setting the [[isValid]] property, one may control whether to continue the rendering.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @since 2.0
- */
-class RenderEvent extends Event
-{
-	/**
-	 * @var string the view currently being rendered
-	 */
-	public $view;
-	/**
-	 * @var string the content to be displayed
-	 */
-	public $content;
-	/**
-	 * @var boolean whether the action is in valid state and its life cycle should proceed.
-	 */
-	public $isValid = true;
-
-	/**
-	 * Constructor.
-	 * @param string $view the view currently being rendered
-	 */
-	public function __construct($view)
-	{
-		$this->view = $view;
-	}
-}
diff --git a/framework/caching/DirectoryDependency.php b/framework/caching/DirectoryDependency.php
deleted file mode 100644
index f977bad..0000000
--- a/framework/caching/DirectoryDependency.php
+++ /dev/null
@@ -1,136 +0,0 @@
-<?php
-/**
- * DirectoryDependency class file.
- *
- * @link http://www.yiiframework.com/
- * @copyright Copyright &copy; 2008-2012 Yii Software LLC
- * @license http://www.yiiframework.com/license/
- */
-
-namespace yii\caching;
-
-
-/**
- * DirectoryDependency represents a dependency based on change of a directory.
- *
- * DirectoryDependency performs dependency checking based on the
- * modification time of the files contained in the specified directory.
- * The directory being checked is specified via {@link directory}.
- *
- * By default, all files under the specified directory and subdirectories
- * will be checked. If the last modification time of any of them is changed
- * or if different number of files are contained in a directory, the dependency
- * is reported as changed. By specifying {@link recursiveLevel},
- * one can limit the checking to a certain depth of the directory.
- *
- * Note, dependency checking for a directory is expensive because it involves
- * accessing modification time of multiple files under the directory.
- *
- * @author Qiang Xue <qiang.xue@gmail.com>
- * @since 2.0
- */
-class DirectoryDependency extends Dependency
-{
-	/**
-	 * @var string the directory whose change is used to determine if the dependency has been changed.
-	 * If any of the files under the directory is changed, the dependency is considered as changed.
-	 */
-	public $directory;
-	/**
-	 * @var integer the depth of the subdirectories to be recursively checked.
-	 * If the value is less than 0, it means unlimited depth.
-	 * If the value is 0, it means checking the files directly under the specified directory.
-	 */
-	public $recursiveLevel = -1;
-	/**
-	 * @var string the regular expression matching valid file/directory names.
-	 * Only the matching files or directories will be checked for changes.
-	 * Defaults to null, meaning all files/directories will qualify.
-	 */
-	public $namePattern;
-
-	/**
-	 * Constructor.
-	 * @param string $directory the directory to be checked
-	 */
-	public function __construct($directory = null)
-	{
-		$this->directory = $directory;
-	}
-
-	/**
-	 * Generates the data needed to determine if dependency has been changed.
-	 * This method returns the modification timestamps for files under the directory.
-	 * @return mixed the data needed to determine if dependency has been changed.
-	 */
-	protected function generateDependencyData()
-	{
-		if ($this->directory !== null) {
-			return $this->generateTimestamps($this->directory);
-		} else {
-			throw new CException(Yii::t('yii', 'DirectoryDependency.directory cannot be empty.'));
-		}
-	}
-
-	/**
-	 * Determines the last modification time for files under the directory.
-	 * This method may go recursively into subdirectories if {@link recursiveLevel} is not 0.
-	 * @param string $directory the directory name
-	 * @param integer $level level of the recursion
-	 * @return array list of file modification time indexed by the file path
-	 */
-	protected function generateTimestamps($directory, $level = 0)
-	{
-		if (($dir = @opendir($directory)) === false) {
-			throw new CException(Yii::t('yii', '"{path}" is not a valid directory.',
-				array('{path}' => $directory)));
-		}
-		$timestamps = array();
-		while (($file = readdir($dir)) !== false) {
-			$path = $directory . DIRECTORY_SEPARATOR . $file;
-			if ($file === '.' || $file === '..') {
-				continue;
-			}
-			if ($this->namePattern !== null && !preg_match($this->namePattern, $file)) {
-				continue;
-			}
-			if (is_file($path)) {
-				if ($this->validateFile($path)) {
-					$timestamps[$path] = filemtime($path);
-				}
-			} else {
-				if (($this->recursiveLevel < 0 || $level < $this->recursiveLevel) && $this->validateDirectory($path)) {
-					$timestamps = array_merge($timestamps, $this->generateTimestamps($path, $level + 1));
-				}
-			}
-		}
-		closedir($dir);
-		return $timestamps;
-	}
-
-	/**
-	 * Checks to see if the file should be checked for dependency.
-	 * This method is invoked when dependency of the whole directory is being checked.
-	 * By default, it always returns true, meaning the file should be checked.
-	 * You may override this method to check only certain files.
-	 * @param string $fileName the name of the file that may be checked for dependency.
-	 * @return boolean whether this file should be checked.
-	 */
-	protected function validateFile($fileName)
-	{
-		return true;
-	}
-
-	/**
-	 * Checks to see if the specified subdirectory should be checked for dependency.
-	 * This method is invoked when dependency of the whole directory is being checked.
-	 * By default, it always returns true, meaning the subdirectory should be checked.
-	 * You may override this method to check only certain subdirectories.
-	 * @param string $directory the name of the subdirectory that may be checked for dependency.
-	 * @return boolean whether this subdirectory should be checked.
-	 */
-	protected function validateDirectory($directory)
-	{
-		return true;
-	}
-}