public void Initialize()
{
if (_initialized)
{
return;
}
var configurator = new DatabaseConfigurationBuilder <TDatabase>();
OnDatabaseInitializing(configurator);
if (configurator.DatabaseFactory == null)
{
throw new InvalidOperationException("database factory is undefined");
}
_databaseEncryption = configurator.DatabaseEncryption ?? new NoDatabaseEncryption();
_databaseSerializer = configurator.DatabaseSerializer ?? new DataContractDatabaseSerializer <TDatabase>();
var file = _directoryContext.GetFile(_fileName);
if (file != null)
{
try
{
_database = _databaseSerializer.Deserialize(_databaseEncryption.Decrypt(file.Content));
}
catch (CryptographicException)
{
_database = configurator.DatabaseFactory.Create();
}
catch (FormatException)
{
_database = configurator.DatabaseFactory.Create();
}
catch (SerializationException)
{
_database = configurator.DatabaseFactory.Create();
}
catch (InvalidCastException)
{
_database = configurator.DatabaseFactory.Create();
}
}
else
{
_database = _database = configurator.DatabaseFactory.Create();
}
_initialized = true;
}
protected abstract void OnDatabaseInitializing(DatabaseConfigurationBuilder <TDatabase> configurator);