Re: ERB call on addressing

>After perusing this thread a bit, I think Gavin's right that we need to
>distinguish this from just query syntax, but for the sake of the client not the
>server.  If we consider the Xptr as a query, then we always need to go back to
>the server.  If we consider it as an address, then a client can use a cached
>document to resolve it.  It could also be construed as an implicit agreement
>with the server that whatever comes back has a fairly stable existence.

Yes. This can have a *large* impact on performance.