[DC-403] Eliminate queries produced by Doctrine_Node_NestedSet::getDescendants() when possible

Fri, 16 Apr 2010 12:18:05 +0000

How to reproduce

fetch a tree with nested set

$root = Doctrine::getTable($model)->getTree()->findRoot($rootId);
$treeObject= Doctrine::getTable($model)->getTree()->fetchTree($root->getId());

issue

$root->getNode()->getChildren();

or there will be a total query mess in a lambda function with a loop getChildren().
...
<?php foreach($root->getChildren() as $child): ?>
   ....
<?php endforeach; ?>
...

Problem is described more verbosely here – http://codeutopia.net/blog/2008/08/30/understanding-doctrines-nestedset-feature/

What behavior is expected

An already fetched record instance is returned, without calling database and without causing query flooding.

Like in propel.

In propel if you are calling ....::retrieveTree($id) it returns the root
with completed, pooled (cached) and linked tree.

What happens

An additional query is issued

This is a big slip in architecture of Doctrine`s nested set implementation.

Doctrine Project

[DC-403] Eliminate queries produced by Doctrine_Node_NestedSet::getDescendants() when possible

How to reproduce

What behavior is expected

Like in propel.

What happens