angry1980.audio.dao.TrackSimilarityDAO Maven / Gradle / Ivy
package angry1980.audio.dao;
import angry1980.audio.model.FingerprintType;
import angry1980.audio.model.TrackSimilarity;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.stream.Collectors;
public interface TrackSimilarityDAO extends DAO {
Logger LOG = LoggerFactory.getLogger(TrackSimilarityDAO.class);
default List findByTrackIdOrEmpty(long trackId){
return findByTrackId(trackId).orElseGet(() -> Collections.emptyList());
}
default Optional> findByTrackId(long trackId){
return Optional.ofNullable(tryToFindByTrackId(trackId));
}
List tryToFindByTrackId(long trackId);
default Optional> findByTrackIdAndFingerprintType(long trackId, FingerprintType type){
Optional> result = Optional.of(
tryToFindByTrackId(trackId).stream()
.filter(ts -> ts.getFingerprintType().equals(type))
.collect(Collectors.toList())
).filter(list -> !list.isEmpty());
if(result.isPresent()){
LOG.debug("There are {} existed similarities of type {}", result.get().size(), type);
}else {
LOG.debug("There are not existed similarities of type {}", type);
}
return result;
}
@Override
default TrackSimilarity tryToGet(long id) {
throw new UnsupportedOperationException();
}
}