internal BulkWriting(StreamingClientDatabase <TKey, TValue> client)
{
if (client.m_writer != null)
{
throw new Exception("Duplicate call to StartBulkWriting");
}
m_client = client;
m_client.m_writer = this;
m_stream = m_client.m_stream;
m_encodingMode = m_client.m_encodingMode;
m_stream.Write((byte)ServerCommand.Write);
m_encodingMode.ResetEncoder();
}
/// <summary>
/// Accesses <see cref="StreamingClientDatabase{TKey,TValue}"/> for given <paramref name="databaseName"/>.
/// </summary>
/// <param name="databaseName">Name of database instance to access.</param>
/// <param name="encodingMethod"></param>
/// <returns><see cref="StreamingClientDatabase{TKey,TValue}"/> for given <paramref name="databaseName"/>.</returns>
StreamingClientDatabase <TKey, TValue> GetDatabase <TKey, TValue>(string databaseName, EncodingDefinition encodingMethod = null)
where TKey : SnapTypeBase <TKey>, new()
where TValue : SnapTypeBase <TValue>, new()
{
DatabaseInfo dbInfo = m_databaseInfos[databaseName.ToUpper()];
if ((object)encodingMethod == null)
{
encodingMethod = dbInfo.SupportedStreamingModes.First();
}
if (m_sortedTreeEngine != null)
{
throw new Exception("Can only connect to one database at a time. Please disconnect from database" + m_historianDatabaseString);
}
if (dbInfo.KeyType != typeof(TKey))
{
throw new InvalidCastException("Key types do not match");
}
if (dbInfo.ValueType != typeof(TValue))
{
throw new InvalidCastException("Value types do not match");
}
m_stream.Write((byte)ServerCommand.ConnectToDatabase);
m_stream.Write(databaseName);
m_stream.Write(new TKey().GenericTypeGuid);
m_stream.Write(new TValue().GenericTypeGuid);
m_stream.Flush();
var command = (ServerResponse)m_stream.ReadUInt8();
switch (command)
{
case ServerResponse.UnhandledException:
string exception = m_stream.ReadString();
throw new Exception("Server UnhandledExcetion: \n" + exception);
case ServerResponse.DatabaseDoesNotExist:
throw new Exception("Database does not exist on the server: " + databaseName);
case ServerResponse.DatabaseKeyUnknown:
throw new Exception("Database key does not match that passed to this function");
case ServerResponse.DatabaseValueUnknown:
throw new Exception("Database value does not match that passed to this function");
case ServerResponse.SuccessfullyConnectedToDatabase:
break;
default:
throw new Exception("Unknown server response: " + command.ToString());
}
var db = new StreamingClientDatabase <TKey, TValue>(m_stream, () => m_sortedTreeEngine = null, dbInfo);
m_sortedTreeEngine = db;
m_historianDatabaseString = databaseName;
db.SetEncodingMode(encodingMethod);
return(db);
}
