Hi Neil,
I've just implemented a new feature that would let facets on the artwork
collection affect the artist collection. I copied your code and data and
modified it to make this exhibit:
http://people.csail.mit.edu/dfhuynh/misc/tate/tate-collection.html
The most important part is this line in the HTML:
ex:restrictBaseCollection="true"
Conceptually, this causes the artwork collection to act as a facet on
the artist collection. Now, the counts in the "Date" facet (on the
artwork collection) are still counts of artworks, not of artists, even
while you're looking at the artists view. So this is not the whole
solution, but perhaps it's enough for you to go on experimenting.
Also note that I have not updated the release site of Exhibit. The
example above is linking directly to the API in the SVN repository.
Best,
David
Neil Ireson wrote:
> Hi David,
>
> The counts are "incorrect" because the artist and artwork facets work
> on different collections. As the artists collection is the base
> collection then changes to the artist facets effect both artist and
> artwork collections and facets correctly. However changes to the
> artwork facets do not effect the artist collection and facets. I have
> done it this way so that the counts for the artist facets relate to
> the artist items and the counts for the artwork facets relate to the
> artworks.
>
> I've had a discourse with David Huynh about this issue. I'm guessing
> the exception is being thrown because I am not really using Exhibit
> correctly; in order to get the appropriate facet value counts. However
> I thought I'd report the exception.
>
> N
>
> > Date: Tue, 8 Jan 2008 14:25:52 -0500
> > From: [EMAIL PROTECTED]
> > To: [email protected]
> > Subject: Re: Exhibit throws an exception
> >
> > Actually there would seem to be a bug higher up. If selecting a (birth
> > date) facet valet would yield zero items, then that facet value
> > generally shouldn't show up at all. The numbers by the facet values are
> > supposed to represent the number of items that would appear if you
> > selected that value; clearly if you have narrowed to six items through
> > the architecture subject, there cannot be 54 items matching the
> > birthdate 1900-2000 value as is currently indicated by the ui.
> >
> > Neil Ireson wrote:
> > > Hi all,
> > >
> > > I've just noticed that my exhibit throws an exception. If you go
> to the exhibit at http://www.dcs.shef.ac.uk/~nsi/tate-collection.html
> open the subject facet and select "architecture", then selecting any
> value from the Artist facets which would cause zero artwork items then
> the page throws an exception. For example, open the birth date facet,
> selecting any of the values, 1600-1700, 1700-1800 and 1900-2000 causes
> the exception to be thrown; selecting 1800-1900 is fine.
> > >
> > > I'm using Firefox under Windows.
> > >
> > > N
> > >
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