i want to use my ldap server as a DB. then i will create persistence classes in the models directory that will extend to Zend_Ldap so that i won't have to write all the CRUD operations but how can i initialize the ldap connection in the bootstrap.php file
for e.g. a database connection using doctrine can be initialized like this, i want to do the same for ldap connection

protected function _initDoctrine()
 {
    $autoloader = Zend_Loader_Autoloader::getInstance();
    $autoloader->registerNamespace('Doctrine');
    $this->getApplication()->getAutoloader()
        ->pushAutoloader(array('Doctrine', 'autoload'));
    spl_autoload_register(array('Doctrine', 'modelsAutoload'));

    $manager = Doctrine_Manager::getInstance();
    $doctrineConfig = $this->getOption('doctrine');
    $manager->setAttribute(Doctrine::ATTR_AUTO_ACCESSOR_OVERRIDE, true);
    $manager->setAttribute(Doctrine::ATTR_AUTOLOAD_TABLE_CLASSES, true);

    Doctrine_Core::loadModels($doctrineConfig['models_path']);

    $conn = Doctrine_Manager::connection($doctrineConfig['dsn'],'doctrine');
    $conn->setAttribute(Doctrine::ATTR_USE_NATIVE_ENUM, true);
 return $conn;
}

ama şimdi ne ben yapmak istiyorum i modeller klasöründe böyle bir şey (aşağıda) varsa

class Application_Model_entry extends Zend_Ldap_Node_collection {

public static function getInstance() {
    $options = Zend_Registry::get('config')->ldap;//i want to avoid this line
    $ldap = new Zend_Ldap($options); // i want to avoid this line
    $dn = $ldap->getBaseDn(); // i want to avoid this line

    $a = new Zend_Ldap_Node_Collection(new Zend_Ldap_Collection_Iterator_Default($ldap,'email')); //also this one 
    return $a;//where $a is an instance of an LDAP entry(node)

}

sonra kontrolör i bir db gibi bir şey yapmak istiyorum

$ent = new Application_Model_entry();
$ent->email = "xyz@abc.xom";
...
$ent->save();
$ent->update();

Bu mümkün olabilir ki nasıl ben ldap bağlantısını başlatmak ve modellerde erişebilirsiniz