jellyfin/MediaBrowser.Controller/Persistence/TypeMapper.cs

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2013-02-21 01:33:05 +00:00
using System;
using System.Collections.Concurrent;
using System.Linq;
namespace MediaBrowser.Controller.Persistence
{
/// <summary>
/// Class TypeMapper
/// </summary>
public class TypeMapper
{
/// <summary>
/// This holds all the types in the running assemblies so that we can de-serialize properly when we don't have strong types
/// </summary>
private readonly ConcurrentDictionary<string, Type> _typeMap = new ConcurrentDictionary<string, Type>();
/// <summary>
/// Gets the type.
/// </summary>
/// <param name="typeName">Name of the type.</param>
/// <returns>Type.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public Type GetType(string typeName)
{
if (string.IsNullOrEmpty(typeName))
{
throw new ArgumentNullException();
}
return _typeMap.GetOrAdd(typeName, LookupType);
}
/// <summary>
/// Lookups the type.
/// </summary>
/// <param name="typeName">Name of the type.</param>
/// <returns>Type.</returns>
private Type LookupType(string typeName)
{
return AppDomain
.CurrentDomain
.GetAssemblies()
.Select(a => a.GetType(typeName, false))
.FirstOrDefault(t => t != null);
}
}
}