OData Custom Serializer for Edm.Stream

gistfile1.txt

using System.IO;
using System.Reflection;
using Microsoft.AspNet.OData;
using Microsoft.AspNet.OData.Formatter;
using Microsoft.AspNetCore.Http.Extensions;
using Microsoft.OData;

namespace SMSOrgView
{
   using Microsoft.AspNet.OData.Formatter.Serialization;
    using Microsoft.AspNetCore.Http;
    using Microsoft.Extensions.Logging;
    using Microsoft.OData.Edm;
    using System.Collections.Generic;
    using System;
    using SMSOrgView.Models;

    public class OrgODataSerializerProvider : DefaultODataSerializerProvider
    {
        private readonly OrgODataResourceSerializer resourceSerializer;

        public OrgODataSerializerProvider(IServiceProvider rootContainer)
            : base(rootContainer)
        {
            this.resourceSerializer = new OrgODataResourceSerializer(this);
        }

        public override ODataEdmTypeSerializer GetEdmTypeSerializer(IEdmTypeReference edmType)
        {
            if (edmType.IsEntity())
            {
                return this.resourceSerializer;
            }            
            return base.GetEdmTypeSerializer(edmType);
        }
    }

    public class OrgODataResourceSerializer : ODataResourceSerializer
    {
        public OrgODataResourceSerializer(ODataSerializerProvider serializerProvider)
            : base(serializerProvider)
        {
        }

        public override ODataProperty CreateStructuralProperty(IEdmStructuralProperty structuralProperty, ResourceContext resourceContext)
        {
            if (structuralProperty.Type.Definition.IsStream())
            {
                var prop = new ODataProperty
                {
                    Name = structuralProperty.Name,
                };
                var value = new ODataStreamReferenceValue();
                if (resourceContext.SerializerContext.MetadataLevel == ODataMetadataLevel.FullMetadata)
                {
                    value.ContentType = this.ContentType;
                }

                prop.Value = value;
                return prop;
            }
            else
            {
                return base.CreateStructuralProperty(structuralProperty, resourceContext);
            }
        }

        public virtual string ContentType
        {
            get { return "application/octet-stream"; }
        }
    }
}