/**
* Checks whether there is document satisfying the specified condition.
*
* @param CriteriaInterface $criteria
* @return bool
*/
public function exists(CriteriaInterface $criteria = null)
{
if ($this->_beforeExists()) {
$criteria = $this->sm->apply($criteria);
$criteria->decorateWith($this->model);
/**
* TODO Use as limited fields set as possible here:
* Pk Fields, or only id, or fields used as query, still need to investigate
*/
$cursor = $this->em->getCollection()->find($criteria->getConditions());
$cursor->limit(1);
// NOTE: Cannot use count(true) here because of hhvm mongofill compatibility, see:
// https://github.com/mongofill/mongofill/issues/86
$exists = $cursor->count() !== 0;
Event::trigger($this->model, FinderInterface::EventAfterExists);
return $exists;
}
return false;
}
/**
* Deletes documents with the specified primary keys.
*
* **Does not raise beforeDelete event and does not emit signals**
*
* See {@link find()} for detailed explanation about $condition and $params.
*
* @param array|CriteriaInterface $criteria query criteria.
* @since v1.0
*/
public function deleteAll($criteria = null)
{
$criteria = $this->sm->apply($criteria);
$result = $this->getCollection()->remove($criteria->getConditions(), $this->options->getSaveOptions(['justOne' => false]));
return $this->_result($result);
}
