[jira] [Updated] (LUCENE-8368) facet by polygon

["Robert Muir (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-8368?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Muir updated LUCENE-8368:
--------------------------------
    Attachment: LUCENE-8368.patch

> facet by polygon
> ----------------
>
>                 Key: LUCENE-8368
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8368
>             Project: Lucene - Core
>          Issue Type: New Feature
>          Components: modules/facet
>            Reporter: Robert Muir
>            Priority: Major
>         Attachments: LUCENE-8368.patch
>
>
> This can give some nice flexibility if you are working with search results on a map. Of course if everything about your use-case is static, its better to compute this up-front and index string values, but its not always the case. Also it can be helpful if your polygons are changing often, since you don't have to reindex.
> Polygon2D already supports multipolygons, but today it only returns a boolean value. This patch adds a {{find}} method that returns the polygon that actually matched, or -1 if it doesn't match. {{contains}} is then just written as {{find >= 0}}.
> Then we can solve the problem with just some sugar over the existing range faceting, as each multipolygon is just a range of ids coming back from {{find}} that correspond with it. e.g. if you were faceting by country, you might have ~200 countries with 100,000 total polygons, and polygons 22,000-32,000 correspond to Canada or whatever.



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