/**
* Filter the query to restrict the result to roots of an object.
* Same as ancestorsOf(), except that it includes the object passed as parameter in the result
*
* @param Especialidad $especialidad The object to use for roots search
*
* @return EspecialidadQuery The current query, for fluid interface
*/
public function rootsOf($especialidad)
{
return $this->inTree($especialidad->getScopeValue())->addUsingAlias(EspecialidadPeer::LEFT_COL, $especialidad->getLeftValue(), Criteria::LESS_EQUAL)->addUsingAlias(EspecialidadPeer::RIGHT_COL, $especialidad->getRightValue(), Criteria::GREATER_EQUAL);
}
/**
* Moves current node and its subtree to be the previous sibling of $sibling
* The modifications in the current object and the tree are immediate
*
* @param Especialidad $sibling Propel object for sibling node
* @param PropelPDO $con Connection to use.
*
* @return Especialidad The current Propel object
*/
public function moveToPrevSiblingOf($sibling, PropelPDO $con = null)
{
if (!$this->isInTree()) {
throw new PropelException('A Especialidad object must be already in the tree to be moved. Use the insertAsPrevSiblingOf() instead.');
}
if ($sibling->isRoot()) {
throw new PropelException('Cannot move to previous sibling of a root node.');
}
if ($sibling->getScopeValue() != $this->getScopeValue()) {
throw new PropelException('Moving nodes across trees is not supported');
}
if ($sibling->isDescendantOf($this)) {
throw new PropelException('Cannot move a node as sibling of one of its subtree nodes.');
}
$this->moveSubtreeTo($sibling->getLeftValue(), $sibling->getLevel() - $this->getLevel(), $con);
return $this;
}