public function setDefault(PartMeasurementUnit $partMeasurementUnit)
{
$this->entityManager->beginTransaction();
$dql = 'UPDATE PartKeepr\\PartBundle\\Entity\\PartMeasurementUnit pu SET pu.default = :default WHERE pu.id = :id';
$this->entityManager->createQuery($dql)->setParameter('id', $partMeasurementUnit->getId())->setParameter('default', true, \PDO::PARAM_BOOL)->execute();
$dql = 'UPDATE PartKeepr\\PartBundle\\Entity\\PartMeasurementUnit pu SET pu.default = :default WHERE pu.id != :id';
$this->entityManager->createQuery($dql)->setParameter('id', $partMeasurementUnit->getId())->setParameter('default', false, \PDO::PARAM_BOOL)->execute();
$this->entityManager->commit();
}