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From David Smiley <david.w.smi...@gmail.com>
Subject Re: Seasonal searches in SOLR 5.x
Date Wed, 23 Mar 2016 03:59:37 GMT
Hi,

I suggest having a "season" field (or whatever you might want to call it)
using DateRangeField but simply use a nominal year value.  So basically all
durations would be within this nominal year.  For some docs that span
new-years, this might mean 2 durations and that's okay.  Also it's okay if
you have multiple values and it's okay if your calculations result in some
that overlap; you needn't make them distinct; it'll all get coalesced in
the index.

If for some reason you wind up going the route of abusing point data for
durations, I recommend this link:
http://wiki.apache.org/solr/SpatialForTimeDurations
and it most definitely does not require polygons (and thus JTS); I'm not
sure what gave you that impression.  It's all rectangles & points.

~ David

On Mon, Mar 21, 2016 at 1:29 PM Ioannis Kirmitzoglou <
ioanniskirmitzoglou@gmail.com> wrote:

> Hi all,
>
> I would like to implement seasonal date searches on date ranges. I’m using
> SOLR 5.4.1 and have indexed date ranges using a DateRangeField (let’s call
> this field date_ranges).
> Each document in SOLR corresponds to a biological sample and each sample
> was collected during a date range that can span from a single day to
> multiple years. For my application it makes sense to enable seasonal
> searches, ie find samples that were collected during a specific period of
> the year (e.g. summer, or February). In this type of search, the year that
> the sample was collected is not relevant, only the days of the year. I’ve
> been all over SOLR documentation and I haven’t been able to find anything
> that will enable do me that. The closest I got was a post with instructions
> on how to use a spatial field to do date searches (
> https://people.apache.org/~hossman/spatial-for-non-spatial-meetup-20130117/).
> Using the logic in that post I was able to come up with a solution but it’s
> rather complex and needs polygon searches (which in turn means installing
> the JTS Topology suite).
> Before committing to that I would like to ask for your input and whether
> there’s an easier way to do these types of searches.
>
> Many thanks,
>
> Ioannis
>
> -----------------------------------------
> Ioannis Kirmitzoglou, PhD
> Bioinformatician - Scientific Programmer
> Imperial College, London
> www.vectorbase.org
> www.vigilab.org
>
> --
Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker
LinkedIn: http://linkedin.com/in/davidwsmiley | Book:
http://www.solrenterprisesearchserver.com

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