RepositoryAudioFile.java
/*
* *********************************************************************************************************************
*
* blueMarine II: Semantic Media Centre
* http://tidalwave.it/projects/bluemarine2
*
* Copyright (C) 2015 - 2021 by Tidalwave s.a.s. (http://tidalwave.it)
*
* *********************************************************************************************************************
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
* specific language governing permissions and limitations under the License.
*
* *********************************************************************************************************************
*
* git clone https://bitbucket.org/tidalwave/bluemarine2-src
* git clone https://github.com/tidalwave-it/bluemarine2-src
*
* *********************************************************************************************************************
*/
package it.tidalwave.bluemarine2.model.impl.catalog;
import javax.annotation.Nonnegative;
import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;
import javax.inject.Inject;
import java.time.Duration;
import java.util.Optional;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Files;
import org.eclipse.rdf4j.query.BindingSet;
import org.eclipse.rdf4j.repository.Repository;
import org.springframework.beans.factory.annotation.Configurable;
import it.tidalwave.util.Id;
import it.tidalwave.util.Memoize;
import it.tidalwave.bluemarine2.util.Formatters;
import it.tidalwave.bluemarine2.model.MediaFileSystem;
import it.tidalwave.bluemarine2.model.audio.AudioFile;
import it.tidalwave.bluemarine2.model.audio.Record;
import it.tidalwave.bluemarine2.model.finder.audio.MusicArtistFinder;
import it.tidalwave.bluemarine2.model.spi.MetadataSupport;
import it.tidalwave.bluemarine2.model.spi.PathAwareEntity;
import it.tidalwave.bluemarine2.model.impl.AudioMetadataFactory;
import it.tidalwave.bluemarine2.model.impl.catalog.finder.RepositoryMusicArtistFinder;
import it.tidalwave.bluemarine2.model.impl.catalog.finder.RepositoryRecordFinder;
import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.extern.slf4j.Slf4j;
import static it.tidalwave.bluemarine2.util.Miscellaneous.*;
import static it.tidalwave.bluemarine2.model.MediaItem.Metadata.*;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
/***********************************************************************************************************************
*
* An implementation of {@link AudioFile} that is mapped to a {@link Repository}.
*
* @stereotype Datum
*
* @author Fabrizio Giudici
*
**********************************************************************************************************************/
@Immutable @Configurable @EqualsAndHashCode(of = { "path", "trackId" }, callSuper = false) @Slf4j
public class RepositoryAudioFile extends RepositoryEntitySupport implements AudioFile
{
@Getter @Nonnull
private final Path path; // FIXME: rename to relativePath?
@Getter @Nonnull
private final Metadata metadata;
@Nonnull
private final Optional<Id> trackId;
@Nonnull
private final Optional<Duration> duration;
@Nonnull
private final Optional<Long> fileSize;
private final Memoize<Metadata> fallbackMetadata = new Memoize<>();
@Inject
private MediaFileSystem fileSystem;
public RepositoryAudioFile (@Nonnull final Repository repository, @Nonnull final BindingSet bindingSet)
{
super(repository, bindingSet, "audioFile", rdfsLabelOf(bindingSet.getBinding("path").getValue().stringValue()));
this.path = toPath(bindingSet.getBinding("path"));
this.duration = toDuration(bindingSet.getBinding("duration"));
this.fileSize = toLong(bindingSet.getBinding("fileSize"));
this.trackId = toId(bindingSet.getBinding("track"));
this.metadata = new MetadataSupport(path).with(TITLE, rdfsLabel)
.with(DURATION, duration)
.with(FILE_SIZE, fileSize)
.withFallback(key -> fallbackMetadata.get(this::loadFallbackMetadata));
}
@Override @Nonnull
public AudioFile getAudioFile()
{
return this;
}
@Override @Nonnull
public Optional<Resource> getContent()
throws IOException
{
final Path absolutePath = normalizedPath(getAbsolutePath());
return Files.exists(absolutePath) ? Optional.of(new FileSystemResource(absolutePath.toFile())) : Optional.empty();
}
@Override @Nonnegative
public long getSize()
throws IOException
{
return Files.size(normalizedPath(getAbsolutePath()));
}
@Override @Nonnull
public MusicArtistFinder findMakers()
{
return new RepositoryMusicArtistFinder(repository).makerOf(trackId.get());
}
@Override @Nonnull
public MusicArtistFinder findComposers()
{
return new RepositoryMusicArtistFinder(repository).makerOf(trackId.get());
// return new RepositoryAudioFileArtistFinder(this); FIXME
}
@Override @Nonnull
public Optional<Record> getRecord()
{
return trackId.flatMap(tid -> new RepositoryRecordFinder(repository).containingTrack(tid).optionalFirstResult());
}
@Override @Nonnull
public Optional<PathAwareEntity> getParent() // FIXME: drop it
{
throw new UnsupportedOperationException();
}
@Override @Nonnull
public String toString()
{
return String.format("RepositoryAudioFileEntity(%s, %s)", path, id);
}
@Override @Nonnull
public String toDumpString()
{
return String.format("%s %8s %s %s - %s", duration.map(Formatters::format).orElse("??:??"),
fileSize.map(Object::toString).orElse(""),
id, path, rdfsLabel);
}
@Nonnull
private Metadata loadFallbackMetadata()
{
final Path absolutePath = getAbsolutePath();
log.debug(">>>> loading fallback metadata from: {}", absolutePath);
// Don't check for file existence, it would fail for some files - see BMT-46. AudioMetadataFactory does all.
return AudioMetadataFactory.loadFrom(absolutePath);
}
@Nonnull
private Path getAbsolutePath()
{
return fileSystem.getRootPath().resolve(path);
}
@Nonnull
private static String rdfsLabelOf (@Nonnull final String path)
{
return path.replaceAll("^.*/", "");
}
}