RE: ATOM representation of search result facets

Hi Erik,


>It's not interesting to ask if it is more or less RESTful to do things using OpenSearch.  I feel
>it's a way of decoupling the server and the client; the server may or may not include
><Query> elements, and the clients may or may not understand them if they do, and don't >break if they're not there.  It caters for evolvability in both, and that's a big benefit.

Rich did ask about REST.  You've given him suggestions about extending atom to include Opensearch markup, without mentioning how this impacts the RESTful-ness of the interactions.

If one extends or overloads atom content with Opensearch or elements in a custom or no namespace, you are still changing the semantics of the content.  To maintain the self-describing messages constraint, you need to do something about the media type, otherwise that content remains opaque, or out-of-band.

Peter