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https://issues.apache.org/jira/browse/SOLR-4212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Steve Molloy updated SOLR-4212:
-------------------------------

    Attachment: patch-4212.txt

Initial patch proposal.
                
> Support for facet pivot query for filtered count
> ------------------------------------------------
>
>                 Key: SOLR-4212
>                 URL: https://issues.apache.org/jira/browse/SOLR-4212
>             Project: Solr
>          Issue Type: Improvement
>          Components: search
>    Affects Versions: 4.0
>            Reporter: Steve Molloy
>         Attachments: patch-4212.txt
>
>
> Facet pivot provide hierarchical support for computing data used to populate 
> a treemap or similar visualization. TreeMaps usually offer users extra 
> information by applying an overlay color on top of the existing square sizes 
> based on hierarchical counts. This second count is based on user choices, 
> representing, usually with gradient, the proportion of the square that fits 
> the user's choices.
> The proposition is to add a facet.pivot.q parameter that would allow to 
> specify a query (per field) that would be intersected with DocSet used to 
> calculate pivot count, stored in separate q-count.

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