Name of lambda parameters

[Brian Goetz]

I think this goes into the general bucket of "you can't do reflection 
below the method level in Java", and lambda expressions are expressions 
and therefore below the method level.  Is lambda somehow special here?

On 1/7/2013 1:04 PM, Remi Forax wrote:
> (CC Alex Buckley)
>
> As noticed recently on lambda-dev mailing list,
> there is no way to get the parameter names of a lambda because
> there is no way to do reflection on a lambda (an object implementing a
> functional interface) to get the corresponding declared method.
>
> do we need a static method Parameter[] Method.getLambdaParameters(Object
> lambdaProxy) ?
> The fact that it takes an object and not stable value (like a class,
> etc) doesn't seem a good idea
>
> This may require bookkeeping when doing the functional interface
> conversion.
> By example, the generated lambda proxy can implement a non-public
> interface to extract this information and for the method handle proxy,
> it can use the internal API used by the metafactory to crack the method
> handle.
>
> So, like serialization, may we need to have a special empty interface
> NamedParameterLambda to tag these specific lambdas ? In that case, the
> method getLambdaParameters can be a static method of NamedParameterLambda,
> Parameter[] getLambdaParameters(NamedParameterLambda lambdaProxy).
>
> Rémi
>