updated all the necessary classes to use injectable

lib/Doctrine/Access.php

@@ -32,7 +32,7 @@
  * @version     $Revision$
  * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>
  */
-abstract class Doctrine_Access extends Doctrine_Object implements ArrayAccess
+abstract class Doctrine_Access extends Doctrine_Locator_Injectable implements ArrayAccess
 {
     /**
      * setArray

lib/Doctrine/Configurable.php

@@ -31,7 +31,7 @@
  * @version     $Revision$
  * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>
  */
-abstract class Doctrine_Configurable extends Doctrine_Object
+abstract class Doctrine_Configurable extends Doctrine_Locator_Injectable
 {
     /**
      * @var array $attributes               an array of containing all attributes

lib/Doctrine/Hydrate.php

@@ -32,7 +32,7 @@
  * @version     $Revision$
  * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>
  */
-class Doctrine_Hydrate extends Doctrine_Object implements Serializable
+class Doctrine_Hydrate extends Doctrine_Locator_Injectable implements Serializable
 {
     /**
      * QUERY TYPE CONSTANTS

lib/Doctrine/Hydrate/Record.php

@@ -31,7 +31,7 @@
  * @version     $Revision$
  * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>
  */
-class Doctrine_Hydrate_Record extends Doctrine_Object
+class Doctrine_Hydrate_Record extends Doctrine_Locator_Injectable
 {
     protected $_collections = array();
     

lib/Doctrine/Locator/Injectable.php

@@ -43,7 +43,10 @@ class Doctrine_Locator_Injectable
      * @var array               an array of bound resources
      */
     protected $_resources = array();
-
+    /**
+     * @var Doctrine_Null $null     Doctrine_Null object, used for extremely fast null value checking
+     */
+    protected static $_null;
     /**
      * setLocator
      * this method can be used for setting the locator object locally
@@ -115,4 +118,25 @@ class Doctrine_Locator_Injectable
         return $this;    
     }
 
+    /**
+     * initNullObject
+     * initializes the null object
+     *
+     * @param Doctrine_Null $null
+     * @return void
+     */
+    public static function initNullObject(Doctrine_Null $null)
+    {
+        self::$_null = $null;
+    }
+    /**
+     * getNullObject
+     * returns the null object associated with this object
+     *
+     * @return Doctrine_Null
+     */
+    public static function getNullObject()
+    {
+        return self::$_null;
+    }
 }

lib/Doctrine/Manager.php

@@ -68,7 +68,7 @@ class Doctrine_Manager extends Doctrine_Configurable implements Countable, Itera
     {
         $this->_root = dirname(__FILE__);
 
-        Doctrine_Object::initNullObject(new Doctrine_Null);
+        Doctrine_Locator_Injectable::initNullObject(new Doctrine_Null);
     }
     /**
      * setDefaultAttributes

lib/Doctrine/Validator.php

@@ -30,7 +30,7 @@
  * @version     $Revision$
  * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>
  */
-class Doctrine_Validator extends Doctrine_Object
+class Doctrine_Validator extends Doctrine_Locator_Injectable
 {
     /**
      * @var array $validators           an array of validator objects