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JSONOutputProvider.cs
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JSONOutputProvider.cs
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using Microsoft.AspNetCore.Http;
using Newtonsoft.Json;
using Newtonsoft.Json.Bson;
using Newtonsoft.Json.Serialization;
using System;
using System.Collections.Generic;
using System.IO;
using System.Runtime.Serialization.Json;
using System.Threading.Tasks;
namespace OCM.API.OutputProviders
{
public class JSONOutputProvider : OutputProviderBase, IOutputProvider
{
public JSONOutputProvider()
{
ContentType = "application/json";
}
public string PerformSerialisationToString(object graph, JsonSerializerSettings serializerSettings)
{
if (serializerSettings != null)
{
return JsonConvert.SerializeObject(graph, serializerSettings);
}
else
{
return JsonConvert.SerializeObject(graph);
}
}
public async Task PerformSerialisationV2(System.IO.Stream outputStream, object graph, string jsCallbackName)
{
await PerformSerialisationV2(outputStream, graph, jsCallbackName, null);
}
[Obsolete]
public void PerformBinarySerialisation(System.IO.Stream outputStream, object graph, string jsCallbackName)
{
//MemoryStream ms = new MemoryStream();
JsonSerializer serializer = new JsonSerializer();
// serialize product to BSON
BsonWriter writer = new BsonWriter(outputStream);
serializer.Serialize(writer, graph);
}
/// <summary>
/// Serialise object using Json.NET
/// </summary>
/// <param name="outputStream"></param>
/// <param name="graph"></param>
/// <param name="jsCallbackName"></param>
public async Task PerformSerialisationV2(System.IO.Stream outputStream, object graph, string jsCallbackName, JsonSerializerSettings serializerSettings)
{
System.IO.StreamWriter s = new StreamWriter(outputStream);
if (jsCallbackName != null)
{
await s.WriteAsync(jsCallbackName + "(");
}
string json = PerformSerialisationToString(graph, serializerSettings);
await s.WriteAsync(json);
if (jsCallbackName != null)
{
await s.WriteAsync(")");
}
await s.FlushAsync();
}
/// <summary>
/// Serialise using DataContractSerializer
/// </summary>
/// <param name="outputStream"></param>
/// <param name="graph"></param>
/// <param name="jsCallbackName"></param>
/// <param name="jsonSerializer"></param>
public async Task PerformSerialisationV1(System.IO.Stream outputStream, object graph, string jsCallbackName, DataContractJsonSerializer jsonSerializer)
{
System.IO.StreamWriter s = new StreamWriter(outputStream);
if (jsCallbackName != null)
{
await s.WriteAsync(jsCallbackName + "(");
}
string json = "";
using (var ms = new MemoryStream())
{
jsonSerializer.WriteObject(ms, graph);
ms.Position = 0;
StreamReader sr = new StreamReader(ms);
json = sr.ReadToEnd();
ms.Close();
}
await s.WriteAsync(json);
if (jsCallbackName != null)
{
await s.WriteAsync(")");
}
await s.FlushAsync();
}
public async Task GetOutput(HttpContext context, System.IO.Stream outputStream, IEnumerable<Common.Model.ChargePoint> dataList, Common.APIRequestParams settings)
{
if (settings.APIVersion >= 2)
{
await PerformSerialisationV2(outputStream, dataList, settings.Callback, GetSerializerSettings(settings));
}
else
{
DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(List<Common.Model.ChargePoint>));
await PerformSerialisationV1(outputStream, dataList, settings.Callback, jsonSerializer);
}
}
public async Task GetOutput(HttpContext context, Stream outputStream, Common.Model.CoreReferenceData data, Common.APIRequestParams settings)
{
if (settings.APIVersion >= 2)
{
await PerformSerialisationV2(outputStream, data, settings.Callback, GetSerializerSettings(settings));
}
else
{
DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(Common.Model.CoreReferenceData));
await PerformSerialisationV1(outputStream, data, settings.Callback, jsonSerializer);
}
}
public async Task GetOutput(HttpContext context, Stream outputStream, Object data, Common.APIRequestParams settings)
{
await PerformSerialisationV2(outputStream, data, settings.Callback, GetSerializerSettings(settings));
}
private JsonSerializerSettings GetSerializerSettings(Common.APIRequestParams settings)
{
JsonSerializerSettings jsonSettings = new JsonSerializerSettings();
if (!settings.IsVerboseOutput)
{
jsonSettings.NullValueHandling = NullValueHandling.Ignore;
}
jsonSettings.Formatting = Formatting.Indented;
if (settings.IsCompactOutput)
{
jsonSettings.Formatting = Formatting.None;
}
if (settings.IsCamelCaseOutput)
{
jsonSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
}
return jsonSettings;
}
}
}