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https://issues.apache.org/jira/browse/SOLR-2641?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Erik Hatcher updated SOLR-2641:
-------------------------------

    Attachment: SOLR_2641.patch

Basic implementation of a search component to put after query and before facet 
that keys off a "fields used" field (see SOLR-1280 for how this can be created 
automatically too), selects the top N fields and sets those as facet.field's 
automatically.

> Auto Facet Selection component
> ------------------------------
>
>                 Key: SOLR-2641
>                 URL: https://issues.apache.org/jira/browse/SOLR-2641
>             Project: Solr
>          Issue Type: Improvement
>          Components: SearchComponents - other
>            Reporter: Erik Hatcher
>            Assignee: Erik Hatcher
>            Priority: Minor
>         Attachments: SOLR_2641.patch
>
>
> It sure would be nice if you could have Solr automatically select field(s) 
> for faceting based dynamically off the profile of the results.  For example, 
> you're indexing disparate types of products, all with varying attributes 
> (color, size - like for apparel, memory_size - for electronics, subject - for 
> books, etc), and a user searches for "ipod" where most products match 
> products with color and memory_size attributes... let's automatically facet 
> on those fields.

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