/// <summary>
/// Gets or create the requested instance specified by the parameter <typeparamref name="T"/>.
/// </summary>
/// <remarks>This</remarks>
/// <typeparam name="T">The type of the instance that is requested.
/// </typeparam>
/// <returns>If the type specified by <typeparamref name="T"/> is
/// registered, it returns an instance that is, is a super class of, or
/// implements the type specified by <typeparamref name="T"/>. Otherwise
/// a <see cref="InstanceNotFoundInEnvironmentConfigurationException"/>
/// occurs.
/// </returns>
public static T Get <T>() where T : class
{
Contract.Ensures(Contract.Result <T>() != null, "The result cannot be null.");
Log.DebugFormat("Requesting instance {0} from the environment.", typeof(T).FullName);
T result = null;
if (_instance == null || !_instance.TryGet(out result))
{
object defaultResult;
if (_defaults.TryGetValue(typeof(T), out defaultResult))
{
result = (T)defaultResult;
}
}
if (result == null)
{
throw new InstanceNotFoundInEnvironmentConfigurationException(typeof(T));
}
return(result);
}
public bool TryGet <T>(out T result) where T : class
{
result = null;
var type = typeof(T);
Func <object> factory;
if (_factories.TryGetValue(type, out factory))
{
result = (T)factory();
return(true);
}
return(_configuration != null && _configuration.TryGet(out result));
}
/// <summary>
/// Gets or create the requested instance specified by the parameter <typeparamref name="T"/>.
/// </summary>
/// <remarks>This</remarks>
/// <typeparam name="T">The type of the instance that is requested.
/// </typeparam>
/// <returns>If the type specified by <typeparamref name="T"/> is
/// registered, it returns an instance that is, is a super class of, or
/// implements the type specified by <typeparamref name="T"/>. Otherwise
/// a <see cref="InstanceNotFoundInEnvironmentConfigurationException"/>
/// occurs.
/// </returns>
public static T Get <T>() where T : class
{
//Contract.Ensures(Contract.Result<T>() != null, "The result cannot be null.");
T result = null;
if (_instance == null || !_instance.TryGet(out result))
{
object defaultResult;
if (_defaults.TryGetValue(typeof(T), out defaultResult))
{
result = (T)defaultResult;
}
}
if (result == null)
{
throw new InstanceNotFoundInEnvironmentConfigurationException(typeof(T));
}
return(result);
}