/**
* inserts node as first child of given node
*
* @param NodeWrapper $node
*/
public function insertAsFirstChildOf(NodeWrapper $node)
{
if ($node === $this) {
throw new \InvalidArgumentException('Cannot insert node as a child of itself');
}
$em = $this->getManager()->getEntityManager();
$newLeft = $node->getLeftValue() + 1;
$newRight = $node->getLeftValue() + 2;
$newRoot = $this->hasManyRoots() ? $node->getRootValue() : null;
// beginTransaction
$em->getConnection()->beginTransaction();
try {
$this->shiftRLRange($newLeft, 0, 2, $newRoot);
$this->insertNode($newLeft, $newRight, $newRoot);
$em->flush();
$em->getConnection()->commit();
} catch (\Exception $e) {
// @codeCoverageIgnoreStart
$em->close();
$em->getConnection()->rollback();
throw $e;
// @codeCoverageIgnoreEnd
}
// endTransaction
}
