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From "Gijs Kunze (JIRA)" <>
Subject [jira] Commented: (SOLR-1240) Numerical Range faceting
Date Fri, 23 Jul 2010 09:08:52 GMT


Gijs Kunze commented on SOLR-1240:

I like the extra level, it'll make my response parser a little bit less messy. But if I may
be so bold as to make another suggestion (which could also apply to other forms of faceting).
On the client side of things it is starting to become more difficult to actually apply the
correct filter queries to actually filter on the facets. How about an option to request a
more verbose output, something like this:

<lst name="popularity">
        <int name="start">-2</int>
        <int name="gap">3</int>
        <int name="end">13</int>
        <int name="before">0</int>
        <int name="after">0</int>
        <int name="between">18</int>
        <lst name="counts">
            <lst name="-2">
                <int name="start">-2</int>
                <int name="end">1</int>
                <str name="filter">popularity:([-2 TO 1])</int>
                <int name="count">3</int>
            <lst name="1">
                <int name="start">1</int>
                <int name="end">4</int>
                <str name="filter">popularity:([1 TO 4])</int>
                <int name="count">2</int>
            <lst name="4">
                <int name="start">4</int>
                <int name="end">7</int>
                <str name="filter">popularity:([4 TO 7])</int>
                <int name="count">13</int>
            <lst name="7">
                <int name="start">7</int>
                <int name="end">10</int>
                <str name="filter">popularity:([7 TO 10])</int>
                <int name="count">7</int>
            <lst name="10">
                <int name="start">10</int>
                <int name="end">13</int>
                <str name="filter">popularity:([10 TO 13])</int>
                <int name="count">2</int>

of course, if you use the include parameter to get more useful facets, the filter would be
something like:

                <str name="filter">popularity:([10 TO *] AND {* TO 13})</int>

This would make client side code a lot easier I think.

p.s. I noticed the start parameter was missing from your xml example, is that on purpose or
a slight oversight?

> Numerical Range faceting
> ------------------------
>                 Key: SOLR-1240
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>          Components: search
>            Reporter: Gijs Kunze
>            Priority: Minor
>         Attachments: SOLR-1240.patch, SOLR-1240.patch, SOLR-1240.patch, SOLR-1240.patch,
SOLR-1240.patch, SOLR-1240.patch, SOLR-1240.patch
> For faceting numerical ranges using many facet.query query arguments leads to unmanageably
large queries as the fields you facet over increase. Adding the same faceting parameter for
numbers which already exists for dates should fix this.

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