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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
#pragma warning disable 1634, 1691
namespace System.ServiceModel.Dispatcher
{
using System;
using System.IO;
using System.Collections.Specialized;
using System.Globalization;
using System.Reflection;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.ServiceModel.Description;
using System.Text;
using System.Web;
using System.Xml;
using System.Runtime.Serialization;
using System.Runtime.Serialization.Json;
public class JsonQueryStringConverter : QueryStringConverter
{
DataContractSerializerOperationBehavior dataContractSerializerOperationBehavior = null;
OperationDescription operationDescription = null;
public JsonQueryStringConverter() : base()
{
}
internal JsonQueryStringConverter(OperationDescription operationDescription)
: base()
{
if (operationDescription == null)
{
throw System.ServiceModel.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("operationDescription");
}
this.operationDescription = operationDescription;
this.dataContractSerializerOperationBehavior = this.operationDescription.Behaviors.Find<DataContractSerializerOperationBehavior>();
}
public override bool CanConvert(Type type)
{
XsdDataContractExporter exporter = new XsdDataContractExporter();
return exporter.CanExport(type);
}
public override object ConvertStringToValue(string parameter, Type parameterType)
{
if (parameterType == null)
{
throw System.ServiceModel.DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parameterType");
}
switch (Type.GetTypeCode(parameterType))
{
case TypeCode.Byte:
case TypeCode.SByte:
case TypeCode.Int16:
case TypeCode.Int32:
case TypeCode.Int64:
case TypeCode.UInt16:
case TypeCode.UInt32:
case TypeCode.UInt64:
case TypeCode.Single:
case TypeCode.Double:
case TypeCode.Decimal:
case TypeCode.Boolean:
// base.ConvertStringToValue handles parameter == null case.
return base.ConvertStringToValue(parameter, parameterType);
case TypeCode.Char:
case TypeCode.String:
case TypeCode.DateTime:
// base.ConvertStringToValue handles parameter == null case.
// IsFirstCharacterReservedCharacter returns false for null strings.
if (IsFirstCharacterReservedCharacter(parameter, '"'))
{
return CreateJsonDeserializedObject(parameter.Trim(), parameterType);
}
return base.ConvertStringToValue(parameter, parameterType);
default:
{
if (parameterType == typeof(Guid))
{
if (parameter == null)
{
return default(Guid);
}
if (IsFirstCharacterReservedCharacter(parameter, '"'))
{
return CreateJsonDeserializedObject(parameter.Trim(), parameterType);
}
return base.ConvertStringToValue(parameter, parameterType);
}
else if (parameterType == typeof(Uri))
{
if (parameter == null)
{
return default(Uri);
}
if (IsFirstCharacterReservedCharacter(parameter, '"'))
{
return CreateJsonDeserializedObject(parameter.Trim(), parameterType);
}
return base.ConvertStringToValue(parameter, parameterType);
}
else if (parameterType == typeof(TimeSpan))
{
if (parameter == null)
{
return default(TimeSpan);
}
if (IsFirstCharacterReservedCharacter(parameter, '"'))
{
return CreateJsonDeserializedObject(parameter.Trim(), parameterType);
}
return base.ConvertStringToValue(parameter, parameterType);
}
else if (parameterType == typeof(byte[]))
{
if (parameter == null)
{
return default(byte[]);
}
if (IsFirstCharacterReservedCharacter(parameter, '['))
{
return CreateJsonDeserializedObject(parameter.Trim(), parameterType);
}
return base.ConvertStringToValue(parameter, parameterType);
}
else if (parameterType == typeof(DateTimeOffset))
{
if (parameter == null)
{
return default(DateTimeOffset);
}
if (IsFirstCharacterReservedCharacter(parameter, '{'))
{
return CreateJsonDeserializedObject(parameter.Trim(), parameterType);
}
return base.ConvertStringToValue(parameter, parameterType);
}
else if (parameterType == typeof(object))
{
if (parameter == null)
{
return default(object);
}
if (IsFirstCharacterReservedCharacter(parameter, '{'))
{
return CreateJsonDeserializedObject(parameter.Trim(), parameterType);
}
return base.ConvertStringToValue(parameter, parameterType);
}
if (parameter == null)
{
return null;
}
return CreateJsonDeserializedObject(parameter.Trim(), parameterType);
}
}
}
public override string ConvertValueToString(object parameter, Type parameterType)
{
if (parameter == null)
{
return null;
}
MemoryStream memoryStream = new MemoryStream();
XmlDictionaryWriter jsonWriter = JsonReaderWriterFactory.CreateJsonWriter(memoryStream, Encoding.UTF8);
GetDataContractJsonSerializer(parameterType).WriteObject(jsonWriter, parameter);
jsonWriter.Flush();
memoryStream.Seek(0, SeekOrigin.Begin);
return Encoding.UTF8.GetString(memoryStream.GetBuffer(), (int) memoryStream.Position, (int) memoryStream.Length);
}
object CreateJsonDeserializedObject(string parameter, Type parameterType)
{
byte[] byteArray = Encoding.UTF8.GetBytes(parameter);
XmlDictionaryReader jsonReader = JsonReaderWriterFactory.CreateJsonReader
(byteArray, 0, byteArray.Length, Encoding.UTF8, XmlDictionaryReaderQuotas.Max, null);
return GetDataContractJsonSerializer(parameterType).ReadObject(jsonReader);
}
DataContractJsonSerializer GetDataContractJsonSerializer(Type parameterType)
{
if (this.operationDescription == null)
{
return new DataContractJsonSerializer(parameterType);
}
else if (this.dataContractSerializerOperationBehavior == null)
{
return new DataContractJsonSerializer(parameterType, operationDescription.KnownTypes);
}
else
{
return new DataContractJsonSerializer(parameterType, this.operationDescription.KnownTypes, this.dataContractSerializerOperationBehavior.maxItemsInObjectGraph,
this.dataContractSerializerOperationBehavior.IgnoreExtensionDataObject, this.dataContractSerializerOperationBehavior.DataContractSurrogate, false); //alwaysEmitTypeInformation
}
}
bool IsFirstCharacterReservedCharacter(string parameter, char reservedCharacter)
{
if (parameter == null)
{
return false;
}
string localParameter = parameter.Trim();
if (localParameter == string.Empty)
{
return false;
}
if (localParameter[0] == reservedCharacter)
{
return true;
}
return false;
}
}
}
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