@Override
@Transactional
public MultimediaImpl createMultimedia(
BlackboardMultimediaResponse multimediaResponse, String filename) {
// Find the creator user
final String creatorId = multimediaResponse.getCreatorId();
ConferenceUserImpl creator = this.conferenceUserDao.getUserByUniqueId(creatorId);
if (creator == null) {
logger.warn(
"Internal user {} doesn't exist for {}. Creating a bare bones user to compensate",
creatorId,
multimediaResponse);
creator = this.conferenceUserDao.createInternalUser(creatorId);
}
// Create and populate a new blackboardMultimedia
final MultimediaImpl blackboardMultimedia =
new MultimediaImpl(multimediaResponse.getMultimediaId(), creator);
updateBlackboardMultimedia(multimediaResponse, filename, blackboardMultimedia);
// Persist and return the new multimedia
this.getEntityManager().persist(blackboardMultimedia);
creator.getMultimedias().add(blackboardMultimedia);
this.getEntityManager().persist(creator);
return blackboardMultimedia;
}
@Override
@Transactional
public void deleteMultimedia(Multimedia multimedia) {
Validate.notNull(multimedia, "multimedia can not be null");
final EntityManager entityManager = this.getEntityManager();
final MultimediaImpl multimediaImpl =
entityManager.find(MultimediaImpl.class, multimedia.getMultimediaId());
final ConferenceUser creator = multimediaImpl.getCreator();
final ConferenceUserImpl creatorImpl = this.conferenceUserDao.getUser(creator.getUserId());
creatorImpl.getMultimedias().remove(multimediaImpl);
entityManager.remove(multimediaImpl);
// entityManager.remove(creatorImpl);
}