/**
* Adds the entity as a root node
*
* Decorates via getNode() as needed
*
* @param mixed $entity
* @return DoctrineExtensions\Hierarchical\Node
*/
public function addRoot($entity)
{
$node = $this->getNode($entity);
$entity = $node->unwrap();
if ($node->getId()) {
throw new HierarchicalException('This entity is already initialized and can not be made a root node');
}
$this->em->getConnection()->beginTransaction();
try {
$lastRoot = $this->getLastRootNode();
if ($lastRoot && $this->getNodeOrderBy()) {
return $lastRoot->addSibling('sorted-sibling', $this);
}
if ($lastRoot) {
$newPath = PathHelper::incPath($this->prototype, $lastRoot->getPath());
} else {
$newPath = PathHelper::getPath($this->prototype, null, 1, 1);
}
$node->setValue($this->getDepthFieldName(), 1);
$node->setValue($this->getPathFieldName(), $newPath);
$this->em->persist($entity);
$this->em->flush();
$this->em->getConnection()->commit();
} catch (\Exception $e) {
$this->em->getConnection()->rollback();
$this->em->close();
throw $e;
}
return $node;
}
/**
* Returns the path for the next sibling of a given node path
*
* @param string $path
* @return string
*/
protected function _incPath($path)
{
return PathHelper::incPath($this, $path);
}
