Nicholas Knize created LUCENE-6450:
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Summary: Add simple encoded GeoPointField type to core
Key: LUCENE-6450
URL: https://issues.apache.org/jira/browse/LUCENE-6450
Project: Lucene - Core
Issue Type: New Feature
Affects Versions: 5.x
Reporter: Nicholas Knize
Priority: Minor
At the moment all spatial capabilities, including basic point based indexing
and querying, require the lucene-spatial module. The spatial module, designed
to handle all things geo, requires dependency overhead (s4j, jts) to provide
spatial rigor for even the most simplistic spatial search use-cases (e.g.,
lat/lon bounding box, point in poly, distance search). This feature trims the
overhead by adding a new GeoPointField type to core along with
GeoBoundingBoxQuery, GeoPolygonQuery, and GeoDistanceQuery classes to the
.search package. This field is intended as a straightforward lightweight type
for the most basic geo point use-cases without the overhead.
The field uses simple bit twiddling operations (currently morton hashing) to
encode lat/lon into a single long term. The queries leverage simple
multi-phase filtering that starts by leveraging NumericRangeQuery to reduce
candidate terms deferring the more expensive mathematics to the smaller
candidate sets.
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