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 <?php
 /**
  * Zend Framework
  *
  * LICENSE
  *
  * This source file is subject to the new BSD license that is bundled
  * with this package in the file LICENSE.txt.
  * It is also available through the world-wide-web at this URL:
  * http://framework.zend.com/license/new-bsd
  * If you did not receive a copy of the license and are unable to
  * obtain it through the world-wide-web, please send an email
  * to license@zend.com so we can send you a copy immediately.
  *
  * @category   Zend
  * @package    Zend_Ldap
  * @subpackage Schema
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 
 /**
  * @see Zend_Ldap_Node_Schema_Item
  */
 // require_once 'Zend/Ldap/Node/Schema/Item.php';
 /**
  * @see Zend_Ldap_Node_Schema_ObjectClass_Interface
  */
 // require_once 'Zend/Ldap/Node/Schema/ObjectClass/Interface.php';
 
 /**
  * Zend_Ldap_Node_Schema_ObjectClass_OpenLdap provides access to the objectClass
  * schema information on an OpenLDAP server.
  *
  * @category   Zend
  * @package    Zend_Ldap
  * @subpackage Schema
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Ldap_Node_Schema_ObjectClass_OpenLdap extends Zend_Ldap_Node_Schema_Item
     implements Zend_Ldap_Node_Schema_ObjectClass_Interface
 {
     /**
      * All inherited "MUST" attributes
      *
      * @var array
      */
     protected $_inheritedMust = null;
     /**
      * All inherited "MAY" attributes
      *
      * @var array
      */
     protected $_inheritedMay = null;
 
 
     /**
      * Gets the objectClass name
      *
      * @return string
      */
     public function getName()
     {
         return $this->name;
     }
 
     /**
      * Gets the objectClass OID
      *
      * @return string
      */
     public function getOid()
     {
         return $this->oid;
     }
 
     /**
      * Gets the attributes that this objectClass must contain
      *
      * @return array
      */
     public function getMustContain()
     {
         if ($this->_inheritedMust === null) {
             $this->_resolveInheritance();
         }
         return $this->_inheritedMust;
     }
 
     /**
      * Gets the attributes that this objectClass may contain
      *
      * @return array
      */
     public function getMayContain()
     {
         if ($this->_inheritedMay === null) {
             $this->_resolveInheritance();
         }
         return $this->_inheritedMay;
     }
 
     /**
      * Resolves the inheritance tree
      *
      * @return void
      */
     protected function _resolveInheritance()
     {
         $must = $this->must;
         $may = $this->may;
         foreach ($this->getParents() as $p) {
             $must = array_merge($must, $p->getMustContain());
             $may = array_merge($may, $p->getMayContain());
         }
         $must = array_unique($must);
         $may = array_unique($may);
         $may = array_diff($may, $must);
         sort($must, SORT_STRING);
         sort($may, SORT_STRING);
         $this->_inheritedMust = $must;
         $this->_inheritedMay = $may;
     }
 
     /**
      * Gets the objectClass description
      *
      * @return string
      */
     public function getDescription()
     {
         return $this->desc;
     }
 
     /**
      * Gets the objectClass type
      *
      * @return integer
      */
     public function getType()
     {
         if ($this->structural) {
             return Zend_Ldap_Node_Schema::OBJECTCLASS_TYPE_STRUCTURAL;
         } else if ($this->abstract) {
             return Zend_Ldap_Node_Schema::OBJECTCLASS_TYPE_ABSTRACT;
         } else if ($this->auxiliary) {
             return Zend_Ldap_Node_Schema::OBJECTCLASS_TYPE_AUXILIARY;
         } else {
             return Zend_Ldap_Node_Schema::OBJECTCLASS_TYPE_UNKNOWN;
         }
     }
 
     /**
      * Returns the parent objectClasses of this class.
      * This includes structural, abstract and auxiliary objectClasses
      *
      * @return array
      */
     public function getParentClasses()
     {
         return $this->sup;
     }
 
     /**
      * Returns the parent object classes in the inhertitance tree if one exists
      *
      * @return array of Zend_Ldap_Node_Schema_ObjectClass_OpenLdap
      */
     public function getParents()
     {
         return $this->_parents;
     }
 }