- fetch a tree with nested set
Problem is described more verbosely here – http://codeutopia.net/blog/2008/08/30/understanding-doctrines-nestedset-feature/
An already fetched record instance is returned, without calling database and without causing query flooding.
In propel if you are calling ....::retrieveTree($id) it returns the root
with completed, pooled (cached) and linked tree.
An additional query is issued
This is a big slip in architecture of Doctrine`s nested set implementation.