Line data    Source code

       1             : #region Copyright
       2             : // // -----------------------------------------------------------------------
       3             : // // <copyright company="Chinchilla Software Limited">
       4             : // //   Copyright Chinchilla Software Limited. All rights reserved.
       5             : // // </copyright>
       6             : // // -----------------------------------------------------------------------
       7             : #endregion
       8             : 
       9             : using System;
      10             : using System.Text;
      11             : using Newtonsoft.Json;
      12             : 
      13             : namespace Cqrs.EventStore.Bus
      14             : {
      15             :         /// <summary>
      16             :         /// Converts a stream of JSON text using deserialisation.
      17             :         /// </summary>
      18             :         public class EventConverter
      19           1 :         {
      20             :                 /// <summary>
      21             :                 /// Assumes the provided <paramref name="eventData"/> is a strean of JSON text and 
      22             :                 /// deserialises the provided <paramref name="eventData"/> into an object of type <paramref name="typeName"/> then casts to <typeparamref name="TEvent"/>.
      23             :                 /// </summary>
      24             :                 /// <typeparam name="TEvent">The <see cref="Type"/> of the event to convert to.</typeparam>
      25             :                 /// <param name="eventData">A strean of JSON text</param>
      26             :                 /// <param name="typeName">The name of the <see cref="Type"/> to deserialise the provided <paramref name="eventData"/> to.</param>
      27           1 :                 public static TEvent GetEventFromData<TEvent>(byte[] eventData, string typeName)
      28             :                 {
      29             :                         var eventType = Type.GetType(typeName);
      30             : 
      31             :                         if (eventType == null)
      32             :                         {
      33             :                                 return default(TEvent);
      34             :                         }
      35             : 
      36             :                         string eventjson = Encoding.UTF8.GetString(eventData);
      37             :                         object eventObject = JsonConvert.DeserializeObject(eventjson, eventType);
      38             :                         return (TEvent)eventObject;
      39             :                 }
      40             :         }
      41             : }