/**
* Calculates the diff to the given repository
*
* The method returns a Repository including all Migrations present in this
* instance but not the given other repository.
*
* @param Repository $otherRepository The repository to diff to
*
* @throws \Bytepark\Component\Migration\Exception\UnitIsAlreadyPresentException
*
* @return Repository The diff
*/
public function diff(Repository $otherRepository)
{
$diffRepository = new Memory();
foreach ($this->unitOfWorkStore as $unitOfWork) {
if (!$otherRepository->contains($unitOfWork)) {
$diffRepository->add($unitOfWork);
}
}
$diffRepository->sort();
return $diffRepository;
}
