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From "Grant Ingersoll (JIRA)" <>
Subject [jira] Commented: (SOLR-2268) Add support for Point in Polygon searches
Date Tue, 07 Dec 2010 14:27:09 GMT


Grant Ingersoll commented on SOLR-2268:

bq. The spatially enabled databases follow the "Simple Features Specification for SQL" spec
which defines the ironically named "Well Known Text" format (WKT) for representing points
polygons etc

Hmm, seems a bit verbose.  For instance, we will already know it is a poly by it's field type
and the extra parens seem like they could easily be replaced.  Then again, if it is a standard...

bq. Using any AWT class can introduce issues related to servers and headless mode. I'd recommend
instead the JTS Java Topology Suite which has a lot of useful stuff - including WKT readers
and writers

AWT won't work anyway, as it only takes ints.  I've found a simple ASL Polygon class that
I think does what we need it.  JTS is good, but it is LGPL.  :-(

> Add support for Point in Polygon searches
> -----------------------------------------
>                 Key: SOLR-2268
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Grant Ingersoll
>            Assignee: Grant Ingersoll
> In spatial applications, it is common to ask whether a point is inside of a polygon.
 Solr could support two forms of this: 
> # A field contains a polygon and the user supplies a point.  If it does, the doc is returned.
> # A document contains a point and the user supplies a polygon.  If the point is in the
polygon, return the document
> With both of these case, it would be good to support the negative assertion, too.

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