wehub-resource-sync
75 lines
2.7 KiB
C#
75 lines
2.7 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 System.Linq;
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using Newtonsoft.Json;
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using System.Collections.Generic;
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namespace QuantConnect
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{
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/// <summary>
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/// Convert a Chart Series to and from JSON
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/// </summary>
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public class ChartSeriesJsonConverter : JsonConverter
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{
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/// <summary>
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/// This converter wont be used to read JSON. Will throw exception if manually called.
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/// </summary>
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public override bool CanRead => false;
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/// <summary>
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/// Indicates whether the given object type can be converted into Chart Series
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/// </summary>
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public override bool CanConvert(Type objectType)
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{
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return typeof(Dictionary<string, BaseSeries>).IsAssignableFrom(objectType);
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}
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/// <summary>
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/// Converts a Chart Series object into a JSON file
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/// </summary>
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public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
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{
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var series = value as Dictionary<string, BaseSeries>;
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if (series == null)
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{
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return;
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}
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writer.WriteStartObject();
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// we sort the series in ascending count so that they are chart nicely, has value for stacked area series so they're continuous
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foreach (var kvp in series.OrderBy(x => x.Value.Index)
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.ThenBy(x => x.Value.Values.Count)
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.ThenBy(x => x.Value.Values.Select(x => (x as ChartPoint)?.Y ?? 0).Sum()))
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{
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writer.WritePropertyName(kvp.Key);
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writer.WriteRawValue(JsonConvert.SerializeObject(kvp.Value));
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}
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writer.WriteEndObject();
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}
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/// <summary>
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/// Converts a JSON file into a Chart Series object
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/// </summary>
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/// <remarks>Throws NotImplementedException</remarks>
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public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
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{
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throw new NotImplementedException();
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}
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}
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}
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