Whats the Best option for NestedSet ( MPTT ) Implementation in Zend Framework Zend_Db?

Whats the Best option for NestedSet ( MPTT ) Implementation in Zend Framework Zend_Db ? By Default It doesnt supports it which is a bit strange IMHO because Symfony/CakePHP have that bui开发者_如何学JAVAlt-in. parent_id (Adjacency List) is very slow due to recursion I think so thats not an option for Hierarchial Data .

Is there any unofficial MPTT Implementation or I have to replace Zend_Db with Doctrine Altogether ?

Please share if anybody had an Experience like this ?

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Zend_Db tends to be pretty versatile, but also remember that each zend component acts as a module in its own right, so you should be able to easily replace Zend_Db with Doctrine.