/// <summary>
/// Check if a particular type/instance name has been registered with the container
/// </summary>
/// <param name="type">Type to check registration for</param>
/// <param name="instanceName">Instance name (optional)</param>
/// <returns>
/// <c>true</c>if the type/instance name has been registered
/// with the container; otherwise <c>false</c>
/// </returns>
/// <exception cref="ArgumentNullException" />
public bool IsRegistered(Type type, string instanceName = null)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
var key = new MappingKey(type, instanceName);
return(this._mappings.ContainsKey(key));
}
/// <summary>
/// Resolve an instance of the requested type from the container.
/// </summary>
/// <param name="type">Requested type</param>
/// <param name="parameters">Constructor parameters</param>
/// <param name="instanceName">Instance name (optional)</param>
/// <returns>The retrieved object</returns>
/// <exception cref="InvalidOperationException" />
public object Create(Type type, dynamic parameters, string instanceName = null)
{
var key = new MappingKey(type, instanceName);
Func <dynamic, object> createInstance;
if (!this._mappings.TryGetValue(key, out createInstance))
{
throw new InvalidOperationException($"Could not find mapping for type '{type.FullName}'");
}
return(createInstance(parameters));
}
/// <summary>
/// Register a type mapping
/// </summary>
/// <param name="type">Type that will be requested</param>
/// <param name="createInstanceDelegate">
/// A delegate that will be used to
/// create an instance of the requested object
/// </param>
/// <param name="instanceName">Instance name (optional)</param>
/// <exception cref="ArgumentNullException" />
/// <exception cref="InvalidOperationException" />
public void Register(Type type, Func <dynamic, object> createInstanceDelegate, string instanceName = null)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
if (createInstanceDelegate == null)
{
throw new ArgumentNullException(nameof(createInstanceDelegate));
}
var key = new MappingKey(type, instanceName);
this._mappings.TryAdd(key, createInstanceDelegate);
}
/// <summary>
/// Unregister a type mapping
/// </summary>
/// <param name="from">Type that will be unregistered</param>
/// <param name="instanceName">
/// Instance name (optional).
/// </param>
/// <exception cref="ArgumentNullException" />
public void Unregister(Type from, string instanceName = null)
{
if (from == null)
{
throw new ArgumentNullException(nameof(@from));
}
var key = new MappingKey(from, instanceName);
if (!this._mappings.ContainsKey(key))
{
return;
}
Func <dynamic, object> outValue;
this._mappings.TryRemove(key, out outValue);
}