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https://issues.apache.org/jira/browse/LUCENE-5648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14017875#comment-14017875
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Ryan McKinley commented on LUCENE-5648:
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This stuff is looking great. java Calendar/Date is mess... would be nice to
use joda-time, but adding that as a dependency is not a great idea.
The name 'NRShape' and 'NRCell' are a little funny -- maybe
NumericRangeShape/NumericRangeCell would be better?
I vote +1 to add it as experimental and get more eyes on it
> 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
> Attachments: LUCENE-5648.patch, LUCENE-5648.patch, LUCENE-5648.patch,
> LUCENE-5648.patch
>
>
> 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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