Files
quantconnect--lean/Common/Data/IndexedBasedData.cs
T
2026-07-13 13:02:50 +08:00

55 lines
2.7 KiB
C#

/*
* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
*
* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
using System;
namespace QuantConnect.Data
{
/// <summary>
/// Abstract indexed base data class of QuantConnect.
/// It is intended to be extended to define customizable data types which are stored
/// using an intermediate index source
/// </summary>
public abstract class IndexedBaseData : BaseData
{
/// <summary>
/// Returns the source for a given index value
/// </summary>
/// <param name="config">Configuration object</param>
/// <param name="date">Date of this source file</param>
/// <param name="index">The index value for which we want to fetch the source</param>
/// <param name="isLiveMode">true if we're in live mode, false for backtesting mode</param>
/// <returns>The <see cref="SubscriptionDataSource"/> instance to use</returns>
public virtual SubscriptionDataSource GetSourceForAnIndex(SubscriptionDataConfig config, DateTime date, string index, bool isLiveMode)
{
throw new NotImplementedException($"{nameof(IndexedBaseData)} types should implement 'GetSourceForAnIndex'. " +
"The implementation should determine the source to use for a given index value.");
}
/// <summary>
/// Returns the index source for a date
/// </summary>
/// <param name="config">Configuration object</param>
/// <param name="date">Date of this source file</param>
/// <param name="isLiveMode">true if we're in live mode, false for backtesting mode</param>
/// <returns>The <see cref="SubscriptionDataSource"/> instance to use</returns>
public override SubscriptionDataSource GetSource(SubscriptionDataConfig config, DateTime date, bool isLiveMode)
{
throw new NotImplementedException($"{nameof(IndexedBaseData)} types should implement 'GetSource'. " +
"The implementation should determine the index source to use for a given date.");
}
}
}