/Alpha/Source/Libraries/openHistorian.Core/Data/Query/HistorianQuery.cs

//******************************************************************************************************

//  HistorianQuery.cs - Gbtc

//

//  Copyright © 2013, Grid Protection Alliance.  All Rights Reserved.

//

//  Licensed to the Grid Protection Alliance (GPA) under one or more contributor license agreements. See

//  the NOTICE file distributed with this work for additional information regarding copyright ownership.

//  The GPA licenses this file to you under the Eclipse Public License -v 1.0 (the "License"); you may

//  not use this file except in compliance with the License. You may obtain a copy of the License at:

//

//      http://www.opensource.org/licenses/eclipse-1.0.php

//

//  Unless agreed to in writing, the subject software distributed under the License is distributed on an

//  "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. Refer to the

//  License for the specific language governing permissions and limitations.

//

//  Code Modification History:

//  ----------------------------------------------------------------------------------------------------

//  12/12/2012 - Steven E. Chisholm

//       Generated original version of source code. 

//

//******************************************************************************************************



using System;

using System.Collections.Generic;

using System.Net;

using GSF.SortedTreeStore.Engine;

using GSF.SortedTreeStore.Engine.Reader;

using GSF.SortedTreeStore.Net;

using openHistorian.Collections;



namespace openHistorian.Data.Query

{

    public class HistorianQuery

    {

        private readonly SortedTreeStoreClient<HistorianKey, HistorianValue> m_historian;

        private int m_samplesPerSecond = 30;



        public HistorianQuery(string server, int port)

        {

            //IPAddress ip = Dns.GetHostAddresses(server)[0];

            //m_historian = new RemoteHistorian<HistorianKey, HistorianValue>(new IPEndPoint(ip, port));

        }



        public HistorianQuery(SortedTreeStoreClient<HistorianKey, HistorianValue> historian)

        {

            m_historian = historian;

        }



        public IDictionary<Guid, SignalDataBase> GetQueryResult(DateTime startTime, DateTime endTime, int zoomLevel, IEnumerable<ISignalCalculation> signals)

        {

            //ToDo: Modify the query base on the zoom level

            SortedTreeEngineBase<HistorianKey, HistorianValue> db = null;

            try

            {

                db = m_historian.GetDefaultDatabase();

               

                //var db = m_historian.ConnectToDatabase("Full Resolution Synchrophasor");



                PeriodicScanner scanner = new PeriodicScanner(m_samplesPerSecond);

                var timestamps = scanner.GetParser(startTime, endTime, 1500u);

                SortedTreeEngineReaderOptions options = new SortedTreeEngineReaderOptions(TimeSpan.FromSeconds(1));

                return db.GetSignalsWithCalculations(timestamps, signals, options);

            }

            finally

            {

                //if (db != null)

                //    db.Disconnect();

            }

        }

    }

}