David Smiley created LUCENE-5648:
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Summary: Index/search multi-valued time durations
Key: LUCENE-5648
URL: https://issues.apache.org/jira/browse/LUCENE-5648
Project: Lucene - Core
Issue Type: New Feature
Components: modules/spatial
Reporter: David Smiley
Assignee: David Smiley
If you need to index a date/time duration, then the way to do that is to have a
pair of date fields; one for the start and one for the end -- pretty
straight-forward. But if you need to index a variable number of durations per
document, then the options aren't pretty, ranging from denormalization, to
joins, to using Lucene spatial with 2D as described
[here|http://wiki.apache.org/solr/SpatialForTimeDurations]. Ideally it would
be easier to index durations, and work in a more optimal way.
This issue implements the aforementioned feature using Lucene-spatial with a
new single-dimensional SpatialPrefixTree implementation. Unlike the other two
SPT implementations, it's not based on floating point numbers. It will have a
Date based customization that indexes levels at meaningful quantities like
seconds, minutes, hours, etc. The point of that alignment is to make it faster
to query across meaningful ranges (i.e. [2000 TO 2014]) and to enable a
follow-on issue to facet on the data in a really fast way.
I'll expect to have a working patch up this week.
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