/// <summary>
/// Creates a message dispatcher and registers all the message handlers
/// specified in the <see cref="Apworks.Config.IConfigSource"/> instance.
/// </summary>
/// <param name="configSource">The <see cref="Apworks.Config.IConfigSource"/> instance
/// that contains the definitions for message handlers.</param>
/// <param name="messageDispatcherType">The type of the message dispatcher.</param>
/// <param name="args">The arguments that is used for initializing the message dispatcher.</param>
/// <returns>A <see cref="Apworks.Bus.IMessageDispatcher"/> instance.</returns>
public static IMessageDispatcher CreateAndRegister(IConfigSource configSource,
Type messageDispatcherType,
params object[] args)
{
IMessageDispatcher messageDispatcher = (IMessageDispatcher)Activator.CreateInstance(messageDispatcherType,
args);
HandlerElementCollection handlerElementCollection = configSource.Config.Handlers;
foreach (HandlerElement handlerElement in handlerElementCollection)
{
switch (handlerElement.SourceType)
{
case HandlerSourceType.Type:
string typeName = handlerElement.Source;
Type handlerType = Type.GetType(typeName);
RegisterType(messageDispatcher, handlerType);
break;
case HandlerSourceType.Assembly:
string assemblyString = handlerElement.Source;
Assembly assembly = Assembly.Load(assemblyString);
RegisterAssembly(messageDispatcher, assembly);
break;
}
}
return(messageDispatcher);
}
public IDictionary <Type, Type> GetCommandHandlers()
{
IDictionary <Type, Type> commandHandlerDictionary = new Dictionary <Type, Type>();
HandlerElementCollection handlerElements = EAppRuntime.Instance.CurrentApp.ConfigSource.Config.Handlers;
if (handlerElements != null &&
handlerElements.Count > 0)
{
for (int handlerIndex = 0; handlerIndex < handlerElements.Count; handlerIndex++)
{
HandlerElement handlerElement = handlerElements[handlerIndex];
string handlerName = handlerElement.Name;
string handlerTypeName = handlerElement.Type;
Type handlerType = Type.GetType(handlerTypeName);
var commandHandlerInterfaceQuery = from c in handlerType.GetInterfaces()
where c.IsGenericType &&
c.GetGenericTypeDefinition() == typeof(ICommandHandler <>)
select c;
foreach (var commandHandlerInterface in commandHandlerInterfaceQuery)
{
Type commandType = commandHandlerInterface.GetGenericArguments().FirstOrDefault();
if (typeof(ICommand).IsAssignableFrom(commandType))
{
commandHandlerDictionary.Add(commandType, handlerType);
}
}
}
}
return(commandHandlerDictionary);
}
