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 < ioanniskirmitzog...@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
