public void TestDatabaseMetaTableSerialization()
{
var entry = new VideoFingerPrintDatabaseMetaTableEntryWrapper
{
FileName = "test",
FileSize = 1,
};
var entry2 = new VideoFingerPrintDatabaseMetaTableEntryWrapper
{
FileName = "test 2",
FileSize = 2,
};
var database = new VideoFingerPrintDatabaseMetaTableWrapper
{
DatabaseMetaTableEntries = new[] { entry, entry2 },
};
using (var memoryStream = new MemoryStream())
{
VideoFingerPrintDatabaseMetaTableSaver.Save(database, memoryStream);
byte[] savedDatabase = memoryStream.ToArray();
VideoFingerPrintDatabaseMetaTableWrapper reloadedDatabase = VideoFingerPrintDatabaseMetaTableLoader.Load(savedDatabase);
Assert.AreEqual(database, reloadedDatabase);
}
}
private void UpdateMetatable(string databasePath, ulong fileSize)
{
VideoFingerPrintDatabaseMetaTableWrapper metatable = CreateOrLoadMetatable(_metatablePath);
// Get matching database entry
VideoFingerPrintDatabaseMetaTableEntryWrapper databaseEntry = (from entry in metatable.DatabaseMetaTableEntries
where string.Equals(entry.FileName, databasePath, StringComparison.Ordinal)
select entry).SingleOrDefault();
databaseEntry.FileSize = fileSize;
VideoFingerPrintDatabaseMetaTableSaver.Save(metatable, _metatablePath);
}
public static VideoFingerPrintDatabaseMetaTableWrapper Coalesce(
string pathToMetatable
)
{
VideoFingerPrintDatabaseMetaTableWrapper oldMetatable = VideoFingerPrintDatabaseMetaTableLoader.Load(pathToMetatable);
IEnumerable <VideoFingerPrintDatabaseMetaTableEntryWrapper> databasesSelectedForCoalescing = GetDatabasesThatNeedCoalescing(oldMetatable);
IEnumerable <VideoFingerPrintDatabaseMetaTableEntryWrapper> remainingDatabases = oldMetatable.DatabaseMetaTableEntries.Except(databasesSelectedForCoalescing);
IEnumerable <IEnumerable <VideoFingerPrintDatabaseMetaTableEntryWrapper> > groupedEntries = DetermineGroups(databasesSelectedForCoalescing);
IEnumerable <VideoFingerPrintDatabaseMetaTableEntryWrapper> coalescedDatabaseGroups = CoalesceDatabaseGroups(groupedEntries);
VideoFingerPrintDatabaseMetaTableWrapper newMetaTable = new VideoFingerPrintDatabaseMetaTableWrapper
{
DatabaseMetaTableEntries = coalescedDatabaseGroups.Concat(remainingDatabases).ToArray(),
};
VideoFingerPrintDatabaseMetaTableSaver.Save(newMetaTable, pathToMetatable);
// Delete old databases
DeleteOldDatabases(databasesSelectedForCoalescing);
return(newMetaTable);
}
private Tuple <VideoFingerPrintDatabaseWrapper, string> CreateNewDatabaseAndAddToMetatable()
{
VideoFingerPrintDatabaseMetaTableWrapper metatable = CreateOrLoadMetatable(_metatablePath);
string emptyDatabaseFileName = Path.GetRandomFileName() + ".bin";
VideoFingerPrintDatabaseWrapper emptyDatabase = new VideoFingerPrintDatabaseWrapper();
VideoFingerPrintDatabaseSaver.Save(emptyDatabase, emptyDatabaseFileName);
// Add to the metatable
var databaseEntries = new List <VideoFingerPrintDatabaseMetaTableEntryWrapper>(metatable.DatabaseMetaTableEntries);
databaseEntries.Add(new VideoFingerPrintDatabaseMetaTableEntryWrapper
{
FileName = emptyDatabaseFileName,
FileSize = 0ul,
});
metatable.DatabaseMetaTableEntries = databaseEntries.ToArray();
VideoFingerPrintDatabaseMetaTableSaver.Save(metatable, _metatablePath);
return(Tuple.Create(emptyDatabase, emptyDatabaseFileName));
}
