public void DeleteHashBinsAndSubfingerprintsOnTrackDelete()
{
const int StaticStride = 5115;
const int SecondsToProcess = 20;
const int StartAtSecond = 30;
DefaultQueryConfiguration defaultQueryConfiguration = new DefaultQueryConfiguration();
TagInfo tagInfo = tagService.GetTagInfo(PathToMp3);
int releaseYear = tagInfo.Year;
Track track = new Track(tagInfo.ISRC, tagInfo.Artist, tagInfo.Title, tagInfo.Album, releaseYear, (int)tagInfo.Duration);
modelService.InsertTrack(track);
var subFingerprints = fingerprintUnitBuilder.BuildAudioFingerprintingUnit()
.From(PathToMp3, SecondsToProcess, StartAtSecond)
.WithCustomAlgorithmConfiguration(config =>
{
config.Stride = new IncrementalStaticStride(StaticStride, config.SamplesPerFingerprint);
})
.FingerprintIt()
.HashIt()
.ForTrack(track.Id)
.Result;
modelService.InsertSubFingerprint(subFingerprints);
var hashBins = new List<HashBinMinHash>();
foreach (var subFingerprint in subFingerprints)
{
long[] groupedSubFingerprint = lshService.Hash(subFingerprint.Signature, defaultQueryConfiguration.NumberOfLSHTables, defaultQueryConfiguration.NumberOfMinHashesPerTable);
for (int i = 0; i < groupedSubFingerprint.Length; i++)
{
int tableNumber = i + 1;
hashBins.Add(new HashBinMinHash(groupedSubFingerprint[i], tableNumber, subFingerprint.Id));
}
}
modelService.InsertHashBin(hashBins);
var actualTrack = modelService.ReadTrackByISRC(tagInfo.ISRC);
Assert.IsNotNull(actualTrack);
AssertTracksAreEqual(track, actualTrack);
foreach (var subFingerprint in subFingerprints)
{
long[] groupedSubFingerprint = lshService.Hash(subFingerprint.Signature, defaultQueryConfiguration.NumberOfLSHTables, defaultQueryConfiguration.NumberOfMinHashesPerTable);
var result = modelService.ReadSubFingerprintsByHashBucketsHavingThreshold(groupedSubFingerprint, defaultQueryConfiguration.NumberOfLSHTables);
var tupple = result.First();
Assert.AreEqual(defaultQueryConfiguration.NumberOfLSHTables, tupple.Item2);
var actualSufingerprint = tupple.Item1;
AssertSubFingerprintsAreEqual(subFingerprint, actualSufingerprint);
}
// Act
modelService.DeleteTrack(track);
Assert.IsNull(modelService.ReadTrackByISRC(tagInfo.ISRC));
foreach (var subFingerprint in subFingerprints)
{
long[] groupedSubFingerprint = lshService.Hash(subFingerprint.Signature, defaultQueryConfiguration.NumberOfLSHTables, defaultQueryConfiguration.NumberOfMinHashesPerTable);
var result = modelService.ReadSubFingerprintsByHashBucketsHavingThreshold(groupedSubFingerprint, defaultQueryConfiguration.NumberOfLSHTables);
Assert.IsTrue(!result.Any());
}
}
public void CreateFingerprintsInsertThenQueryAndGetTheRightResult()
{
const int StaticStride = 5115;
const int SecondsToProcess = 10;
const int StartAtSecond = 30;
DefaultQueryConfiguration defaultQueryConfiguration = new DefaultQueryConfiguration();
QueryFingerprintService queryFingerprintService = new QueryFingerprintService(new CombinedHashingAlgorithm(), modelService);
ITagService tagService = new BassAudioService();
TagInfo info = tagService.GetTagInfo(PathToMp3);
int releaseYear = info.Year;
Track track = new Track(info.ISRC, info.Artist, info.Title, info.Album, releaseYear, (int)info.Duration);
modelService.InsertTrack(track);
var fingerprinter = fingerprintUnitBuilderWithBass.BuildAudioFingerprintingUnit()
.From(PathToMp3, SecondsToProcess, StartAtSecond)
.WithCustomAlgorithmConfiguration(config =>
{
config.Stride = new IncrementalStaticStride(StaticStride, config.SamplesPerFingerprint);
})
.FingerprintIt();
var fingerprints = fingerprinter.AsIs().Result;
var subFingerprints = fingerprinter.HashIt().ForTrack(track.Id).Result;
modelService.InsertSubFingerprint(subFingerprints);
List<HashBinMinHash> hashBins = new List<HashBinMinHash>();
foreach (SubFingerprint subFingerprint in subFingerprints)
{
long[] groupedSubFingerprint = lshService.Hash(subFingerprint.Signature, defaultQueryConfiguration.NumberOfLSHTables, defaultQueryConfiguration.NumberOfMinHashesPerTable);
for (int i = 0; i < groupedSubFingerprint.Length; i++)
{
int tableNumber = i + 1;
hashBins.Add(new HashBinMinHash(groupedSubFingerprint[i], tableNumber, subFingerprint.Id));
}
}
modelService.InsertHashBin(hashBins);
QueryResult result = queryFingerprintService.Query(fingerprints, defaultQueryConfiguration);
Assert.IsTrue(result.IsSuccessful);
Assert.AreEqual(track.Id, result.Results[0].Track.Id);
}