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From "Abeba Tensai" <abeba.ten...@gmail.com>
Subject Re: filtering search using regex
Date Sat, 12 Apr 2008 14:33:33 GMT
hi mathieu,

i cannot split the data in a very meaningful way. My example is a bit
misleading.
basically, I can have the field FILTER indexed with 12K or 13B-14K and the
user might want results that have field FILTER > 13 and K, the first one
(12K) won't match because 12 < 13 but the second will (it has in the string
14K which is 14 > 12 and K). So I don't think that I can alter the way I
indexed data to be able to use facet .. it is just not possible ..
I am just trying to have people use regular free text search but then filter
the results using a regex ..

thanks.

On 4/12/08, Mathieu Lecarme <mathieu@garambrogne.net> wrote:
>
>  hi,
> >
> > I have a question ... I need to be able to filter a search using a
> > regex. I
> > cannot used facet as the filtering is pretty complex (but easy to
> > perform
> > using a regex).
> > For instance I have stored in the field ID the value 12G and I want to
> > basically filter out all the results that are > 12 with G so for
> > instance
> > 14G will match but 8G and 14B would not. Using a regex this is simply
> > "[1-9]+[3-9]G" ..
> > i am wondering what the right approach is to tackle such a situation ..
> >
> > thanks.
> >
> regex match is only useful when you first select a prefix, wich is a basic
> lucene feature : put the pointer just up to the first term begining with
> "toto".
> Your query don't have any prefix.
> What happen if you split your data in two field "12"  and "G", "14" and
> "B", or, better, if it's number, "12G" can be indexed as "12000000"?
>
> M.
>

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