diff --git a/lib/Doctrine/ORM/Mapping/Driver/AbstractDriver.php b/lib/Doctrine/ORM/Mapping/Driver/AbstractDriver.php
deleted file mode 100644
index c18eeca5f..000000000
--- a/lib/Doctrine/ORM/Mapping/Driver/AbstractDriver.php
+++ /dev/null
@@ -1,97 +0,0 @@
-<?php
-/*
- *  $Id$
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * This software consists of voluntary contributions made by many individuals
- * and is licensed under the LGPL. For more information, see
- * <http://www.doctrine-project.org>.
- */
-
-namespace Doctrine\ORM\Mapping\Driver;
-
-/**
- * Base driver for metadata drivers.
- * 
- * A file driver operates in a mode where it loads the mapping files of individual
- * classes on demand. This requires the user to adhere to the convention of 1 mapping
- * file per class and the file names of the mapping files must correspond to the full
- * class name, including namespace, with the namespace delimiters '\', replaced by dots '.'.
- *
- * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
- * @link        www.doctrine-project.com
- * @since       2.0
- * @version     $Revision$
- * @author		Benjamin Eberlei <kontakt@beberlei.de>
- * @author		Guilherme Blanco <guilhermeblanco@hotmail.com>
- * @author      Jonathan H. Wage <jonwage@gmail.com>
- * @author      Roman Borschel <roman@code-factory.org>
- */
-abstract class AbstractDriver
-{
-    /**
-     * The paths where to look for mapping files.
-     *
-     * @var array
-     */
-    protected $_paths = array();
-
-    /**
-     * The file extension of mapping documents.
-     *
-     * @var string
-     */
-    protected $_fileExtension = 'php';
-
-    /**
-     * Append lookup paths to metadata driver.
-     *
-     * @param array $paths
-     */
-    public function addPaths(array $paths)
-    {
-        $this->_paths = array_unique(array_merge($this->_paths, $paths));
-    }
-    
-    /**
-     * Retrieve the defined metadata lookup paths.
-     *
-     * @return array
-     */
-    public function getPaths()
-    {
-        return $this->_paths;
-    }
-
-    /**
-     * Get the file extension used to look for mapping files under
-     *
-     * @return void
-     */
-    public function getFileExtension()
-    {
-        return $this->_fileExtension;
-    }
-
-    /**
-     * Set the file extension used to look for mapping files under
-     *
-     * @param string $fileExtension The file extension to set
-     * @return void
-     */
-    public function setFileExtension($fileExtension)
-    {
-        $this->_fileExtension = $fileExtension;
-    }
-}
\ No newline at end of file
diff --git a/lib/Doctrine/ORM/Mapping/Driver/AbstractFileDriver.php b/lib/Doctrine/ORM/Mapping/Driver/AbstractFileDriver.php
index af1f8ff96..b0197894b 100644
--- a/lib/Doctrine/ORM/Mapping/Driver/AbstractFileDriver.php
+++ b/lib/Doctrine/ORM/Mapping/Driver/AbstractFileDriver.php
@@ -40,12 +40,73 @@ use Doctrine\ORM\Mapping\MappingException;
  * @author      Jonathan H. Wage <jonwage@gmail.com>
  * @author      Roman Borschel <roman@code-factory.org>
  */
-abstract class AbstractFileDriver extends AbstractDriver implements Driver
+abstract class AbstractFileDriver implements Driver
 {
     /**
-     * @var string Middle part file extension.
+     * The paths where to look for mapping files.
+     *
+     * @var array
      */
-    protected $_middleFileExtension = 'dcm';
+    protected $_paths = array();
+
+    /**
+     * The file extension of mapping documents.
+     *
+     * @var string
+     */
+    protected $_fileExtension = '.php';
+    
+    /** 
+     * Initializes a new FileDriver that looks in the given path(s) for mapping 
+     * documents and operates in the specified operating mode. 
+     *  
+     * @param string|array $paths One or multiple paths where mapping documents can be found. 
+     */ 
+    public function __construct($paths) 
+    { 
+        $this->addPaths((array) $paths);
+    } 
+
+    /**
+     * Append lookup paths to metadata driver.
+     *
+     * @param array $paths
+     */
+    public function addPaths(array $paths)
+    {
+        $this->_paths = array_unique(array_merge($this->_paths, $paths));
+    }
+    
+    /**
+     * Retrieve the defined metadata lookup paths.
+     *
+     * @return array
+     */
+    public function getPaths()
+    {
+        return $this->_paths;
+    }
+
+    /**
+     * Get the file extension used to look for mapping files under
+     *
+     * @return void
+     */
+    public function getFileExtension()
+    {
+        return $this->_fileExtension;
+    }
+
+    /**
+     * Set the file extension used to look for mapping files under
+     *
+     * @param string $fileExtension The file extension to set
+     * @return void
+     */
+    public function setFileExtension($fileExtension)
+    {
+        $this->_fileExtension = $fileExtension;
+    }
     
     /**
      * Get the element of schema meta data for the class from the mapping file.
@@ -70,13 +131,16 @@ abstract class AbstractFileDriver extends AbstractDriver implements Driver
      */
     public function isTransient($className)
     {
-        try {
-            $fileName = $this->_findMappingFile($className);
-            
-            return false;
-        } catch (\Exception $e) {
-            return true;
+        $fileName = str_replace('\\', '.', $className) . $this->_fileExtension;
+        
+        // Check whether file exists
+        foreach ((array) $this->_paths as $path) {
+            if (file_exists($path . DIRECTORY_SEPARATOR . $fileName)) {
+                return false;
+            }
         }
+
+        return true;
     }
     
     /**
@@ -100,14 +164,12 @@ abstract class AbstractFileDriver extends AbstractDriver implements Driver
                 );
         
                 foreach ($iterator as $file) {
-                    $info = pathinfo($file->getPathName());
-                    
-                    if ( ! isset($info['extension']) || $info['extension'] != $this->_fileExtension) {
+                    if (($fileName = $file->getBasename($this->_fileExtension)) == $file->getBasename()) {
                         continue;
                     }
                     
                     // NOTE: All files found here means classes are not transient!
-                    $classes[] = str_replace('.', '\\', $file->getBasename('.' . $this->_getFileSuffix()));
+                    $classes[] = str_replace('.', '\\', $fileName);
                 }
             }
         }
@@ -125,7 +187,7 @@ abstract class AbstractFileDriver extends AbstractDriver implements Driver
      */
     protected function _findMappingFile($className)
     {
-        $fileName = str_replace('\\', '.', $className) . '.' . $this->_getFileSuffix();
+        $fileName = str_replace('\\', '.', $className) . $this->_fileExtension;
         
         // Check whether file exists
         foreach ((array) $this->_paths as $path) {
@@ -136,17 +198,6 @@ abstract class AbstractFileDriver extends AbstractDriver implements Driver
 
         throw MappingException::mappingFileNotFound($className);
     }
-    
-    /**
-     * Retrieves the mapping file name suffix.
-     *
-     * @return string File name suffix.
-     */
-    protected function _getFileSuffix()
-    {
-        return ($this->_middleFileExtension != '' ? $this->_middleFileExtension . '.' : '')
-             . $this->_fileExtension;
-    }
 
     /**
      * Loads a mapping file with the given name and returns a map
diff --git a/lib/Doctrine/ORM/Mapping/Driver/AnnotationDriver.php b/lib/Doctrine/ORM/Mapping/Driver/AnnotationDriver.php
index ebc222a73..f75982a0c 100644
--- a/lib/Doctrine/ORM/Mapping/Driver/AnnotationDriver.php
+++ b/lib/Doctrine/ORM/Mapping/Driver/AnnotationDriver.php
@@ -41,7 +41,7 @@ require __DIR__ . '/DoctrineAnnotations.php';
  * @author      Jonathan H. Wage <jonwage@gmail.com>
  * @author      Roman Borschel <roman@code-factory.org>
  */
-class AnnotationDriver extends AbstractDriver implements Driver
+class AnnotationDriver implements Driver
 {
     /** 
      * The AnnotationReader.
@@ -50,15 +50,75 @@ class AnnotationDriver extends AbstractDriver implements Driver
      */
     private $_reader;
     
+    /**
+     * The paths where to look for mapping files.
+     *
+     * @var array
+     */
+    protected $_paths = array();
+
+    /**
+     * The file extension of mapping documents.
+     *
+     * @var string
+     */
+    protected $_fileExtension = '.php';
+    
     /**
      * Initializes a new AnnotationDriver that uses the given AnnotationReader for reading
      * docblock annotations.
      * 
      * @param $reader The AnnotationReader to use.
+     * @param string|array $paths One or multiple paths where mapping classes can be found. 
      */
-    public function __construct(AnnotationReader $reader)
+    public function __construct(AnnotationReader $reader, $paths = null)
     {
         $this->_reader = $reader;
+        
+        if ($paths) {
+            $this->addPaths((array) $paths);
+        }
+    }
+    
+    /**
+     * Append lookup paths to metadata driver.
+     *
+     * @param array $paths
+     */
+    public function addPaths(array $paths)
+    {
+        $this->_paths = array_unique(array_merge($this->_paths, $paths));
+    }
+    
+    /**
+     * Retrieve the defined metadata lookup paths.
+     *
+     * @return array
+     */
+    public function getPaths()
+    {
+        return $this->_paths;
+    }
+
+    /**
+     * Get the file extension used to look for mapping files under
+     *
+     * @return void
+     */
+    public function getFileExtension()
+    {
+        return $this->_fileExtension;
+    }
+
+    /**
+     * Set the file extension used to look for mapping files under
+     *
+     * @param string $fileExtension The file extension to set
+     * @return void
+     */
+    public function setFileExtension($fileExtension)
+    {
+        $this->_fileExtension = $fileExtension;
     }
 
     /**
@@ -359,9 +419,7 @@ class AnnotationDriver extends AbstractDriver implements Driver
                 );
         
                 foreach ($iterator as $file) {
-                    $info = pathinfo($file->getPathName());
-                    
-                    if ( ! isset($info['extension']) || $info['extension'] != $this->_fileExtension) {
+                    if (($fileName = $file->getBasename($this->_fileExtension)) == $file->getBasename()) {
                         continue;
                     }
                     
diff --git a/lib/Doctrine/ORM/Mapping/Driver/PhpDriver.php b/lib/Doctrine/ORM/Mapping/Driver/PhpDriver.php
index 59abd48ea..8de3cbad3 100644
--- a/lib/Doctrine/ORM/Mapping/Driver/PhpDriver.php
+++ b/lib/Doctrine/ORM/Mapping/Driver/PhpDriver.php
@@ -42,11 +42,79 @@ use Doctrine\Common\DoctrineException,
  * @author      Jonathan H. Wage <jonwage@gmail.com>
  * @author      Roman Borschel <roman@code-factory.org>
  */
-class PhpDriver extends AbstractDriver implements Driver
+class PhpDriver implements Driver
 {
-    /** The array of class names found and the path to the file */
+    /** 
+     * @var array The array of class names found and the path to the file
+     */
     private $_classPaths = array();
     
+    /**
+     * The paths where to look for mapping files.
+     *
+     * @var array
+     */
+    protected $_paths = array();
+
+    /**
+     * The file extension of mapping documents.
+     *
+     * @var string
+     */
+    protected $_fileExtension = '.php';
+    
+    /** 
+     * Initializes a new PhpDriver that looks in the given path(s) for mapping 
+     * documents and operates in the specified operating mode. 
+     *  
+     * @param string|array $paths One or multiple paths where mapping documents can be found. 
+     */ 
+    public function __construct($paths) 
+    { 
+        $this->addPaths((array) $paths);
+    } 
+
+    /**
+     * Append lookup paths to metadata driver.
+     *
+     * @param array $paths
+     */
+    public function addPaths(array $paths)
+    {
+        $this->_paths = array_unique(array_merge($this->_paths, $paths));
+    }
+    
+    /**
+     * Retrieve the defined metadata lookup paths.
+     *
+     * @return array
+     */
+    public function getPaths()
+    {
+        return $this->_paths;
+    }
+
+    /**
+     * Get the file extension used to look for mapping files under
+     *
+     * @return void
+     */
+    public function getFileExtension()
+    {
+        return $this->_fileExtension;
+    }
+
+    /**
+     * Set the file extension used to look for mapping files under
+     *
+     * @param string $fileExtension The file extension to set
+     * @return void
+     */
+    public function setFileExtension($fileExtension)
+    {
+        $this->_fileExtension = $fileExtension;
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -84,15 +152,12 @@ class PhpDriver extends AbstractDriver implements Driver
                 );
         
                 foreach ($iterator as $file) {
-                    $info = pathinfo($file->getPathName());
-                    
-                    if ( ! isset($info['extension']) || $info['extension'] != $this->_fileExtension) {
+                    if (($fileName = $file->getBasename($this->_fileExtension)) == $file->getBasename()) {
                         continue;
                     }
                     
-                    $className = $info['filename'];
-                    $classes[] = $className;
-                    $this->_classPaths[$className] = $file->getPathName();
+                    $classes[] = $fileName;
+                    $this->_classPaths[$fileName] = $file->getPathName();
                 }
             }
         }
diff --git a/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php b/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php
index 29fbfc0f7..04ccff231 100644
--- a/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php
+++ b/lib/Doctrine/ORM/Mapping/Driver/XmlDriver.php
@@ -41,7 +41,7 @@ class XmlDriver extends AbstractFileDriver
     /**
      * {@inheritdoc}
      */
-    protected $_fileExtension = 'xml';
+    protected $_fileExtension = '.dcm.xml';
 
     /**
      * {@inheritdoc}
@@ -369,29 +369,6 @@ class XmlDriver extends AbstractFileDriver
             }
         }
     }
-    
-    /**
-     * {@inheritdoc}
-     */
-    protected function _loadMappingFile($file)
-    {
-        $result = array();
-        $xmlElement = simplexml_load_file($file);
-
-        if (isset($xmlElement->entity)) {
-            foreach ($xmlElement->entity as $entityElement) {
-                $entityName = (string)$entityElement['name'];
-                $result[$entityName] = $entityElement;
-            }
-        } else if (isset($xmlElement->{'mapped-superclass'})) {
-            foreach ($xmlElement->{'mapped-superclass'} as $mapperSuperClass) {
-                $className = (string)$mappedSuperClass['name'];
-                $result[$className] = $mappedSuperClass;
-            }
-        }
-
-        return $result;
-    }
 
     /**
      * Constructs a joinColumn mapping array based on the information
@@ -445,4 +422,27 @@ class XmlDriver extends AbstractFileDriver
         }
         return $cascades;
     }
+    
+    /**
+     * {@inheritdoc}
+     */
+    protected function _loadMappingFile($file)
+    {
+        $result = array();
+        $xmlElement = simplexml_load_file($file);
+
+        if (isset($xmlElement->entity)) {
+            foreach ($xmlElement->entity as $entityElement) {
+                $entityName = (string)$entityElement['name'];
+                $result[$entityName] = $entityElement;
+            }
+        } else if (isset($xmlElement->{'mapped-superclass'})) {
+            foreach ($xmlElement->{'mapped-superclass'} as $mapperSuperClass) {
+                $className = (string)$mappedSuperClass['name'];
+                $result[$className] = $mappedSuperClass;
+            }
+        }
+
+        return $result;
+    }
 }
\ No newline at end of file
diff --git a/lib/Doctrine/ORM/Mapping/Driver/YamlDriver.php b/lib/Doctrine/ORM/Mapping/Driver/YamlDriver.php
index da1d142d9..3a4c1994c 100644
--- a/lib/Doctrine/ORM/Mapping/Driver/YamlDriver.php
+++ b/lib/Doctrine/ORM/Mapping/Driver/YamlDriver.php
@@ -49,7 +49,7 @@ class YamlDriver extends AbstractFileDriver
     /**
      * {@inheritdoc}
      */
-    protected $_fileExtension = 'yml';
+    protected $_fileExtension = '.dcm.yml';
 
     /**
      * {@inheritdoc}
diff --git a/lib/Doctrine/ORM/Tools/Export/ClassMetadataExporter.php b/lib/Doctrine/ORM/Tools/Export/ClassMetadataExporter.php
index 588fef281..03057412d 100644
--- a/lib/Doctrine/ORM/Tools/Export/ClassMetadataExporter.php
+++ b/lib/Doctrine/ORM/Tools/Export/ClassMetadataExporter.php
@@ -111,20 +111,17 @@ class ClassMetadataExporter
         
         $class = $this->_mappingDrivers[$type];
         
-        if (is_subclass_of($class, 'Doctrine\ORM\Mapping\Driver\AbstractDriver')) {
+        if (is_subclass_of($class, 'Doctrine\ORM\Mapping\Driver\AbstractFileDriver')) {
             if (is_null($source)) {
                 throw DoctrineException::fileMappingDriversRequireDirectoryPath();
             }
             
-            if ($class == 'Doctrine\ORM\Mapping\Driver\AnnotationDriver') {
-                $reader = new \Doctrine\Common\Annotations\AnnotationReader(new \Doctrine\Common\Cache\ArrayCache);
-                $reader->setDefaultAnnotationNamespace('Doctrine\ORM\Mapping\\');
-                $driver = new \Doctrine\ORM\Mapping\Driver\AnnotationDriver($reader);
-            } else {
-                $driver = new $class();
-            }
+            $driver = new $class($source);
+        } else if ($class == 'Doctrine\ORM\Mapping\Driver\AnnotationDriver') {
+            $reader = new \Doctrine\Common\Annotations\AnnotationReader(new \Doctrine\Common\Cache\ArrayCache);
+            $reader->setDefaultAnnotationNamespace('Doctrine\ORM\Mapping\\');
             
-            $driver->addPaths((array) $source);
+            $driver = new \Doctrine\ORM\Mapping\Driver\AnnotationDriver($reader, $source);
         } else {
             $driver = new $class($source);
         }
diff --git a/tests/Doctrine/Tests/ORM/Mapping/MappingDriverTest.php b/tests/Doctrine/Tests/ORM/Mapping/MappingDriverTest.php
index 53d9733aa..a9539eb4c 100644
--- a/tests/Doctrine/Tests/ORM/Mapping/MappingDriverTest.php
+++ b/tests/Doctrine/Tests/ORM/Mapping/MappingDriverTest.php
@@ -13,8 +13,7 @@ class MappingDriverTest extends \Doctrine\Tests\OrmTestCase
     public function testXmlMapping()
     {
         $className = 'Doctrine\Tests\ORM\Mapping\User';
-        $xmlDriver = new XmlDriver();
-        $xmlDriver->addPaths(array(__DIR__ . DIRECTORY_SEPARATOR . 'xml'));
+        $xmlDriver = new XmlDriver(__DIR__ . DIRECTORY_SEPARATOR . 'xml');
         
         $class = new ClassMetadata($className);
         
@@ -28,8 +27,7 @@ class MappingDriverTest extends \Doctrine\Tests\OrmTestCase
     public function testYamlMapping()
     {
         $className = 'Doctrine\Tests\ORM\Mapping\User';
-        $yamlDriver = new YamlDriver();
-        $yamlDriver->addPaths(array(__DIR__ . DIRECTORY_SEPARATOR . 'yaml'));
+        $yamlDriver = new YamlDriver(__DIR__ . DIRECTORY_SEPARATOR . 'yaml');
         
         $class = new ClassMetadata($className);
         
@@ -43,8 +41,7 @@ class MappingDriverTest extends \Doctrine\Tests\OrmTestCase
     public function testXmlGetAllClassNames()
     {
         $className = 'Doctrine\Tests\ORM\Mapping\User';
-        $xmlDriver = new XmlDriver();
-        $xmlDriver->addPaths(array(__DIR__ . DIRECTORY_SEPARATOR . 'xml'));
+        $xmlDriver = new XmlDriver(__DIR__ . DIRECTORY_SEPARATOR . 'xml');
         
         $class = new ClassMetadata($className);