[XESAM] Questions regarding Xesam Query Language

[Mikkel Kamstrup Erlandsen]

On 18/02/2008, Jamie McCracken <jamiemcc at blueyonder.co.uk> wrote:
>
> On Mon, 2008-02-18 at 11:23 +0100, Mikkel Kamstrup Erlandsen wrote:
> > On 17/09/2007, Anders Rune Jensen <anders at iola.dk> wrote:
> > > Hi
> > >
> > > I've been reading the Xesam Query Language specification and I have a questions:
> > >
> > > 1) How do I get all tags for all files? Preferable as list<name,
> > > count>. The same is true for other attributes such as mime-types.
> >
> > This boarders on metadata management, and the search API is not
> > optimized for this usage. This will be more natural when we have the
> > metadata storage API as well as an Index API (which can provide stats
> > about the index).
> >
> > I see two ways to do this purely within the search API.
> >
>
> I already suggested a GetUniqueValues method which returns count as well
> some time ago for this purpose - everyone agreed it was sane but did
> this get lost?

As I noted in the bottom of my mail, I added this to
http://xesam.org/main/XesamIteration2.

I think this method belongs in an Index interface since it requires an
index to provide usable performance. Implementors of the Search
interface need not have an index.

Cheers,
Mikkel