wehub-resource-sync
61 lines
2.2 KiB
C#
61 lines
2.2 KiB
C#
/*
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* QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
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* Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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using System;
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using QuantConnect.Data;
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namespace QuantConnect.ToolBox
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{
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/// <summary>
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/// Provides an implementation of <see cref="IDataProcessor"/> that filters the incoming
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/// stream of data before passing it along to the wrapped processor
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/// </summary>
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public class FilteredDataProcessor : IDataProcessor
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{
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private readonly Func<IBaseData, bool> _predicate;
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private readonly IDataProcessor _processor;
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/// <summary>
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/// Initializes a new instance of the <see cref="FilteredDataProcessor"/> class
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/// </summary>
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/// <param name="processor">The processor to filter data for</param>
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/// <param name="predicate">The filtering predicate to be applied</param>
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public FilteredDataProcessor(IDataProcessor processor, Func<IBaseData, bool> predicate)
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{
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_predicate = predicate;
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_processor = processor;
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}
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/// <summary>
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/// Invoked for each piece of data from the source file
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/// </summary>
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/// <param name="data">The data to be processed</param>
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public void Process(IBaseData data)
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{
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if (_predicate(data))
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{
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_processor.Process(data);
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}
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}
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/// <summary>
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/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
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/// </summary>
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public void Dispose()
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{
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_processor.Dispose();
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}
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}
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} |