[jira] [Created] (LUCENE-5648) Index/search multi-valued time durations

["David Smiley (JIRA)" <ji...@apache.org>]

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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