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Distinguish XML Responses – Telegram API

Following Situation:
I get different XML-formatted responses from a Device. With the response handler class I want to process these responses. Now my problem is how to distinguish these different responses and finding the correct response Type, before deserializing?

The XML Response Types of the Device

  • Response Type 1: Response
<Telegram xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchemainstance" xmlns="LancePlatform">
    <Response>
        // The Rest of the XML Tree
    </Response>
</Telegram>
  • Response Type 2: Notification
<Telegram xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchemainstance" xmlns="LancePlatform">
    <Notification>
        // The Rest of the XML Tree
    </Notification>
</Telegram>

Process Response Function for One Response Type

public void ProcessResponse(string response)
{
    using (TextReader reader = new StringReader(response))
    {
        XmlSerializer serializer = new XmlSerializer(typeof(Telegram)); 
        Telegram telegram = new Telegram();
        try
        {
            // Do I have to check here if the Deserializion was valid, 
            // and if not try the next Response Type
            telegram = (Telegram)serializer.Deserialize(reader);
            Console.WriteLine(telegram.Response);
        }
        catch (System.Exception ex)
        {
            Console.WriteLine(ex);
        }
    }
}
Tags:

2

Answers


  1. 0

    Not very beautiful but what is with:

    if(response.StartsWith("<ResponseType_1>"))
{
  responseType = typeof(ResponseType_1);
}
else if(response.StartsWith("<ResponseType_2>"))
{
  responseType = typeof(ResponseType_2);
}

    in front of the using?

    Login or Signup to reply.
  2. 0

    Then put all the response types into Telegram. Only one property in the response will have a value and the others will be null

    using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
using System.IO;
using System.Reflection;

namespace ConsoleApplication1
{
    class Program
    {
        const string FILENAME = @"c:temptest.xml";
        static void Main(string[] args)
        {
            Telegram telegram = new Telegram();

            string type1 = "<Telegram xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchemainstance" xmlns:p="LancePlatform">" +
                                "<Response>" +
                                //The Rest of the XML Tree
                                "</Response>" +
                            "</Telegram>";


            string type2 = "<Telegram xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchemainstance" xmlns:p="LancePlatform">" +
                                "<Notification>" +
                                //The Rest of the XML Tree
                                "</Notification>" +
                            "</Telegram>";

            Telegram t1 = telegram.ProcessResponse(type1);
            object[] p1 = Telegram.Properties(t1);
            Telegram t2 = telegram.ProcessResponse(type2);
            object[] p2 = Telegram.Properties(t2);
        }
    }
       public class Telegram
    {
        public Response Response { get; set; }
        public Notification Notification { get; set; }

        public static object[] Properties(Telegram t)
        {
            PropertyInfo[] properties = typeof(Telegram).GetProperties();

            return properties.Select(x => x.GetValue(t,null)).Where(x => x != null).ToArray();
        }
        public Telegram ProcessResponse(string response)
        {
            Telegram telegram = new Telegram();
            using (TextReader reader = new StringReader(response))
            {
                XmlSerializer serializer = new XmlSerializer(typeof(Telegram));
                try
                {
                    // Do I have to check here if the Deserializion was valid, 
                    // and if not try the next Response Type
                    telegram = (Telegram)serializer.Deserialize(reader);
                    Console.WriteLine(telegram.Response);
                }
                catch (System.Exception ex)
                {
                    Console.WriteLine(ex);
                }
            }
            return telegram; 
        }

    }
    public class Response
    {
    }
    public class Notification
    {
    }
}
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