apache / apache/lucene

Add Spatial4j DistanceCalculator impl based on SloppyMath [LUCENE-5458]

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legacy-jira-priority:Minor module:spatial type:enhancement
Dominant language
Java
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Avg merge
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Merged PRs (30d)
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Description

It'd be nice if Lucene-spatial could plug in a custom implementation of a Spatial4j DistanceCalculator when the Spatial4j SpatialContext is initialized. This implementation would use Lucene util's SloppyMath. No change needed on Spatial4j side; it's all here.

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Migrated from [LUCENE-5458](https://issues.apache.org/jira/browse/LUCENE-5458) by David Smiley (@dsmiley)

Contributor guide

Open the contributing guide

Research direction

Start in the lucene-spatial integration around Spatial4j SpatialContext and its DistanceCalculator extension point. Read Lucene util's SloppyMath to understand the intended distance calculation, then determine how the custom implementation can be initialized without changes to Spatial4j. Done means lucene-spatial can use this SloppyMath-based calculator.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
search
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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