/**
* Inserts a leaf node in a tree.
*
* @param \BackBee\NestedNode\AbstractNestedNode $node The node to be inserted
* @param \BackBee\NestedNode\AbstractNestedNode $parent The parent node
* @param int $newLeftNode The new left node of the inserted node
*
* @return \BackBee\NestedNode\AbstractNestedNode The inserted node
* @throws \BackBee\Exception\InvalidArgumentException Occurs if the node is an ancestor of $parent or $parent is not flushed yet
*/
protected function _insertNode(AbstractNestedNode $node, AbstractNestedNode $parent, $newLeftNode)
{
if ($parent->isDescendantOf($node, false)) {
throw new InvalidArgumentException('Cannot insert node in itself or one of its descendants');
}
if (false === $this->_em->contains($parent)) {
throw new InvalidArgumentException('Cannot insert in a non managed node');
}
$this->detachOrPersistNode($node);
$newRightNode = $newLeftNode + $node->getWeight() - 1;
$node->setLeftnode($newLeftNode)->setRightnode($newRightNode)->setLevel($parent->getLevel() + 1)->setParent($parent)->setRoot($parent->getRoot());
$this->shiftRlValues($node, $node->getLeftnode(), $node->getWeight());
$this->_em->refresh($parent);
return $node;
}
