diff --git a/Doctrine.php b/Doctrine.php
index f3216197e..753af8674 100644
--- a/Doctrine.php
+++ b/Doctrine.php
@@ -353,91 +353,8 @@ final class Doctrine {
      * @return void
      */
     public static function compile() {
-        if(! self::$path)
-            self::$path = dirname(__FILE__);
-
-        $classes = array("Doctrine",
-                         "Configurable",
-                         "Manager",
-                         "Session",
-                         "Table",
-                         "Iterator",
-                         "Exception",
-                         "Access",
-                         "Null",
-                         "Record",
-                         "Record_Iterator",
-                         "Collection",
-                         "Validator",
-                         "Hydrate",
-                         "Query",
-                         "Query_Part",
-                         "Query_From",
-                         "Query_Orderby",
-                         "Query_Groupby",
-                         "Query_Condition",
-                         "Query_Where",
-                         "Query_Having",
-                         "RawSql",
-                         "EventListener_Interface",
-                         "EventListener",
-                         "Relation",
-                         "ForeignKey",
-                         "LocalKey",
-                         "Association",
-                         "DB",
-                         "DBStatement");
-
-
-        $ret     = array();
-
-        foreach($classes as $class) {
-            if($class !== 'Doctrine')
-                $class = 'Doctrine_'.$class;
-
-            $file  = self::$path.DIRECTORY_SEPARATOR.str_replace("_",DIRECTORY_SEPARATOR,$class).".php";
-
-            if( ! file_exists($file))
-                throw new Doctrine_Exception("Couldn't compile $file. File $file does not exists.");
-
-            self::autoload($class);
-            $refl  = new ReflectionClass ( $class );
-            $lines = file( $file );
-
-            $start = $refl -> getStartLine() - 1;
-            $end   = $refl -> getEndLine();
-
-            $ret = array_merge($ret,
-                               array_slice($lines,
-                               $start,
-                              ($end - $start)));
-
-        }
-
-        $file = self::$path.DIRECTORY_SEPARATOR.'Doctrine.compiled.php';
-        if (!is_writable($file))
-            throw new Doctrine_Exception("Couldn't write compiled data. $file is not writable");
-
-        // first write the 'compiled' data to a text file, so
-        // that we can use php_strip_whitespace (which only works on files)
-        $fp = fopen($file, 'w');
-        if ($fp === false)
-            throw new Doctrine_Exception("Couldn't write compiled data. Failed to open $file");
-        fwrite($fp, "<?php".
-                    " class InvalidKeyException extends Exception { }".
-                    " class DQLException extends Exception { }".
-                    implode('', $ret)
-              );
-        fclose($fp);
-
-        $stripped = php_strip_whitespace( $file );
-        $fp = fopen($file, 'w');
-        if ($fp === false)
-            throw new Doctrine_Exception("Couldn't write compiled data. Failed to open $file");
-        fwrite($fp, $stripped);
-        fclose($fp);
-    }
-
+        Doctrine_Compiler::compile();
+    }                      
     /**
      * simple autoload function
      * returns true if the class was loaded, otherwise false
diff --git a/Doctrine/Compiler.php b/Doctrine/Compiler.php
new file mode 100644
index 000000000..bc02c6b5e
--- /dev/null
+++ b/Doctrine/Compiler.php
@@ -0,0 +1,128 @@
+<?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.phpdoctrine.com>.
+ */
+
+/**
+ * Doctrine
+ * the base class of Doctrine framework
+ *
+ * @package     Doctrine
+ * @author      Konsta Vesterinen
+ * @license     LGPL
+ */
+class Doctrine_Compiler {
+    /**
+     * @var array $classes          an array containing all runtime classes of Doctrine framework
+     */
+    private static $classes = array(
+                         "Doctrine",
+                         "Configurable",
+                         "Manager",
+                         "Session",
+                         "Table",
+                         "Iterator",
+                         "Exception",
+                         "Access",
+                         "Null",
+                         "Record",
+                         "Record_Iterator",
+                         "Collection",
+                         "Validator",
+                         "Hydrate",
+                         "Query",
+                         "Query_Part",
+                         "Query_From",
+                         "Query_Orderby",
+                         "Query_Groupby",
+                         "Query_Condition",
+                         "Query_Where",
+                         "Query_Having",
+                         "RawSql",
+                         "EventListener_Interface",
+                         "EventListener",
+                         "Relation",
+                         "ForeignKey",
+                         "LocalKey",
+                         "Association",
+                         "DB",
+                         "DBStatement");
+
+    /**
+     * method for making a single file of most used doctrine runtime components
+     * including the compiled file instead of multiple files (in worst
+     * cases dozens of files) can improve performance by an order of magnitude
+     *
+     * @throws Doctrine_Exception
+     * @return void
+     */
+    public static function compile() {
+        $path = Doctrine::getPath();
+
+        $classes = self::$classes;
+
+        $ret     = array();
+
+        foreach($classes as $class) {
+            if($class !== 'Doctrine')
+                $class = 'Doctrine_'.$class;
+
+            $file  = $path.DIRECTORY_SEPARATOR.str_replace("_",DIRECTORY_SEPARATOR,$class).".php";
+
+            if( ! file_exists($file))
+                throw new Doctrine_Exception("Couldn't compile $file. File $file does not exists.");
+
+            self::autoload($class);
+            $refl  = new ReflectionClass ( $class );
+            $lines = file( $file );
+
+            $start = $refl -> getStartLine() - 1;
+            $end   = $refl -> getEndLine();
+
+            $ret = array_merge($ret,
+                               array_slice($lines,
+                               $start,
+                              ($end - $start)));
+
+        }
+
+        $file = $path.DIRECTORY_SEPARATOR.'Doctrine.compiled.php';
+        if (!is_writable($file))
+            throw new Doctrine_Exception("Couldn't write compiled data. $file is not writable");
+
+        // first write the 'compiled' data to a text file, so
+        // that we can use php_strip_whitespace (which only works on files)
+        $fp = fopen($file, 'w');
+        if ($fp === false)
+            throw new Doctrine_Exception("Couldn't write compiled data. Failed to open $file");
+        fwrite($fp, "<?php".
+                    " class InvalidKeyException extends Exception { }".
+                    " class DQLException extends Exception { }".
+                    implode('', $ret)
+              );
+        fclose($fp);
+
+        $stripped = php_strip_whitespace( $file );
+        $fp = fopen($file, 'w');
+        if ($fp === false)
+            throw new Doctrine_Exception("Couldn't write compiled data. Failed to open $file");
+        fwrite($fp, $stripped);
+        fclose($fp);
+    }
+}