/**
* Filter the query by a related Libro object
*
* @param Libro $libro the related object to use as filter
* @param string $comparison Operator to use for the column comparison, defaults to Criteria::EQUAL
*
* @return UsuarioQuery The current query, for fluid interface
*/
public function filterByLibroRelatedById_usuario($libro, $comparison = null)
{
if ($libro instanceof Libro) {
return $this->addUsingAlias(UsuarioPeer::ID, $libro->getId_usuario(), $comparison);
} elseif ($libro instanceof PropelCollection) {
return $this->useLibroRelatedById_usuarioQuery()->filterByPrimaryKeys($libro->getPrimaryKeys())->endUse();
} else {
throw new PropelException('filterByLibroRelatedById_usuario() only accepts arguments of type Libro or PropelCollection');
}
}
