Ferret talk - Sep 2006 - Searching untokenized fields

Hi ..

I tried to exclude certain objects from my search, by adding appropriate
term queries ..

i = Ferret::Index::Index.new
i.field_infos.add_field(:type, :index => :untokenized, :term_vector =>
:no)
i << {:type => "Movie", :name => "Indiana" }
i << {:type => "Movie", :name => "Forrest" }
i << {:type => "People", :name => "Forrest" }

now searching for forrest should give 2 results..
>> i.search_each("forrest") do end
=> 2

now i would like to exclude the movie, so i tried to do this:
>> i.search_each("forrest AND NOT type:movie") do end
=> 2
>> i.search_each("forrest AND NOT type:Movie") do end
=> 2

So how to exclude objects with a certain untokenized value in it? having
the field tokenized works great ..

Ben

On 9/22/06, Benjamin Krause <bk at benjaminkrause.com>
wrote:
> Hi ..
>
> I tried to exclude certain objects from my search, by adding appropriate
> term queries ..
>
> i = Ferret::Index::Index.new
> i.field_infos.add_field(:type, :index => :untokenized, :term_vector
=> :no)
> i << {:type => "Movie", :name => "Indiana"
}
> i << {:type => "Movie", :name => "Forrest"
}
> i << {:type => "People", :name => "Forrest"
}
>
> now searching for forrest should give 2 results..
>
> >> i.search_each("forrest") do end
> => 2
>
> now i would like to exclude the movie, so i tried to do this:
>
> >> i.search_each("forrest AND NOT type:movie") do end
> => 2
> >> i.search_each("forrest AND NOT type:Movie") do end
> => 2
>
> So how to exclude objects with a certain untokenized value in it? having
> the field tokenized works great ..
>
> Ben
This is happening because in this case the QueryParser is downcasing
"Movie", even though it remained in uppercase in the index. You need
to give the QueryParser a specialized Analyzer that won''t analyze
untokenized fields. This is will be automated in the next version of
Ferret: 0.10.7 for the Index class.

> This is happening because in this case the QueryParser is downcasing
> "Movie", even though it remained in uppercase in the index. You
need
> to give the QueryParser a specialized Analyzer that won''t analyze
> untokenized fields. This is will be automated in the next version of
> Ferret: 0.10.7 for the Index class.
great.. thanks :-)