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From Jeremy Friesen <rej...@gmail.com>
Subject Re: Sorting IndexSearcher results by LongPoint with 6.0
Date Thu, 26 May 2016 23:21:48 GMT
Thanks for the help. So just to sum up, if I have a numeric field type that
I want to be able to do a range query on, sort by, and also retrieve in the
document as a stored value, I will need to add it to the document three
times, as a NumericDocValuesField, as a LongPoint, and as a StoredField.
Does that sound correct?

On Thu, May 26, 2016 at 3:43 PM, Uwe Schindler <uwe@thetaphi.de> wrote:

> Hi,
>
> Sorting does not work on indexed fields anymore (since Lucene 5), unless
> you use UninvertingReader. Point values don't work with that because they
> cannot be uninverted.
>
> For sorting it's the same rule for all field types: enable DocValues! You
> just have to add another field instance with same name using doc values
> (some numeric type).
>
> Uwe
>
> Am 26. Mai 2016 23:53:56 MESZ, schrieb Jeremy Friesen <rejemy@gmail.com>:
> >I'm attempting to upgrade my project to Lucene 6.0, and have run into
> >an
> >issue with sorting my results. My documents have a timestamp field that
> >was
> >previously a StoredField with NumericType: Long. I've converted it to a
> >LongPoint, which seems to work fine for range queries.
> >
> >My problem is that trying to sort search results with a SortField of
> >type
> >Long now doesn't seem to work with a LongPoint field. I get an
> >IllegalStateException "unexpected docvalues type NONE for field
> >'timestamp'
> >(expected=NUMERIC). Use UninvertingReader or index with docvalues."
> >
> >I'm guessing the sorter hasn't been updated to work with PointValues
> >yet,
> >but I just wanted to check with the mailing list to see if anyone else
> >has
> >found a way to do results sorting under 6.0.
>
> --
> Uwe Schindler
> H.-H.-Meier-Allee 63, 28213 Bremen
> http://www.thetaphi.de
>

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