in Doctrine 1, i see that it supports hierarchical data support? is there any in Doctrine 2?
UPDATE 1
ok so i used Nested Set Extension for Doctrine 2. i have some questions
1. inserting a node
// in the docs
$child1 = new Category();
$child1->name = 'Child Category 1';
$child2 = new Category();
$child2->name = 'Child Category 2';
$category->addChild($child1);
$category->addChild($child2);
it seems like i must do something like
$root = $nsm->createRoot($category);
$root->addChild($child1);
$root->addChild($child2);
likewise to add sub children
$child2wrapper = $root->addChild($child2);
$child2wrapper->addChild($newChild);
2. abt the root field and having multiple trees.
say i want multiple trees, i see that the extension does not populate my root field? how shld i populate it?