Intercept Properties With Castle Windsor IInterceptor

Question

Does anyone have a suggestion on a better way to intercept a properties with Castle DynamicProxy? Specifcally, I need the PropertyInfo that I'm intercepting, but it's not directly on the IInvocation, so what I do is:

        public static PropertyInfo GetProperty(this MethodInfo method)
    {
        bool takesArg = method.GetParameters().Length == 1;
        bool hasReturn = method.ReturnType != typeof(void);
        if (takesArg == hasReturn) return null;
        if (takesArg)
        {
            return method.DeclaringType.GetProperties()
                .Where(prop => prop.GetSetMethod() == method).FirstOrDefault();
        }
        else
        {
            return method.DeclaringType.GetProperties()
                .Where(prop => prop.GetGetMethod() == method).FirstOrDefault();
        }
    }

Then in my IInterceptor:

  #region IInterceptor Members

    public void Intercept(IInvocation invocation)
    {
        bool doSomething =                                 invocation.Method.GetProperty().GetCustomAttributes(true).OfType<SomeAttribute>().Count() > 0;

    }

    #endregion

Thanks.

Answer 1

Generally this is not available. DynamicProxy intercepts methods (incl. getters and setters), and it does not care about properties.

You could optimize this code a bit by making the interceptor IOnBehalfAware (see here) and discovering the method->property mapping upfront.