public override IDecorationOf <ICondition> ApplyThisDecorationTo(ICondition thing)
{
this.Logger.LogVerbose("ApplyThisDecorationTo started", thing);
IDecorationOf <ICondition> rv = null;
try
{
rv = new LoggingConditionDecoration(thing, this.Logger);
}
catch (Exception ex)
{
this.Logger.LogError(ex.Message, null, ex);
throw;
}
finally
{
this.Logger.LogVerbose("ApplyThisDecorationTo completed", null);
}
return(rv);
}
/// <summary>
/// sets the Decorated property. If null, kacks
/// </summary>
/// <param name="decorated"></param>
protected void SetDecorated(T decorated)
{
if (decorated == null)
{
throw new InvalidOperationException("null decoration injection");
}
if (decorated is ISealedDecoration)
{
throw new InvalidOperationException("Cannot decorate a SealedDecoration");
}
//if decorated is a decoration, we must ensure that none of the decoration layers are equal to this
//or we'll get a circ reference situation
var decorationList = decorated.GetAllDecorations();
//remove the first decoration because it is equivalent to "this"
if (decorationList != null)
{
foreach (var each in decorationList)
{
if (object.ReferenceEquals(each, this))
{
throw new InvalidOperationException("circular reference");
}
}
}
this._Decorated = decorated;
if (decorated is IDecorationOf <T> )
{
IDecorationOf <T> dec = decorated as IDecorationOf <T>;
this._Core = dec.Core;
}
else
{
this._Core = decorated;
}
//set the decorator backreference
if (decorated.IsADecoratorAwareDecoration())
{
(decorated as IDecoratorAwareDecoration).Decorator = this;
}
//if a cake constraint (aka IHasDecoration) is declared anywhere in the stack
//we validate the current cake supports the constraint. this is a topdown walk
var cake = this.Cake;
cake.WithEach(layer =>
{
if (layer is IHasDecoration)
{
//get all the interfaces it has, that derive from IHasDecoration
var layerType = layer.GetType();
var interfaces = layerType.GetInterfaces();
foreach (var interfaceType in interfaces)
{
if (!interfaceType.Name.Contains("IHasDecoration`"))
{
continue;
}
var requiredDecorations = interfaceType.GetGenericArguments();
foreach (Type each in requiredDecorations)
{
if (this.As(each, false) == null)
{
throw new InvalidOperationException(string.Format("required decoration {0} not found in cake", each.Name));
}
}
}
}
});
}
