/// <summary>
/// Initialize an IndexDatabase with the path to the index file,
/// whether it exists or not
/// </summary>
/// <param name="pathToIndexFile">The path to the index file</param>
/// <param name="method">The serialization method to use</param>
/// <remarks>
/// If the file exists, this object will attempt to deserialize it. If it does
/// not exist, a new file will be created
/// </remarks>
public IndexDatabase(string pathToIndexFile, SerializationMethod method)
: this()
{
_pathToIndexFile = pathToIndexFile;
_indexEntries = DeserializeIndexDatabase(pathToIndexFile, method);
_serializationMethod = method;
}
private static void SerializeNewEntriesBinary(string pathToIndexFile, IndexEntries entries)
{
SerializeNewEntries(pathToIndexFile, () =>
{
using (var stream = new FileStream(pathToIndexFile, FileMode.Create, FileAccess.Write, FileShare.None))
{
var formatter = new BinaryFormatter();
formatter.Serialize(stream, entries);
stream.Close();
}
});
}
/// <summary>
/// Flush any queued entries for addition to disk
/// </summary>
public void Flush()
{
var updatedIndexEntriesObject = new IndexEntries
{
Entries = _queuedIndexEntriesForAddition.ToArray(),
};
if (_serializationMethod == SerializationMethod.JSON)
{
SerializeNewEntriesJson(_pathToIndexFile, JsonConvert.SerializeObject(updatedIndexEntriesObject));
}
else
{
SerializeNewEntriesBinary(_pathToIndexFile, updatedIndexEntriesObject);
}
_indexEntries = updatedIndexEntriesObject;
ClearQueuedEntries();
_hashToEntriesMap = new Lazy<IDictionary<ImageFingerPrint, ICollection<IndexEntry>>>(IndexAllEntries);
}
