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Posted to java-user@lucene.apache.org by egorlex <eg...@gmail.com> on 2019/01/15 16:59:19 UTC
Lucene sort in AaZz order
Hi
Hi all, i need help with understand how Lucene sort works.
This is example how i create sort field.
document.add(new SortedDocValuesField("by_name", new
BytesRef(family.getName())));
And when i make sort by name i get result in this order - azAz, but i need
AaZz.
Could someone help me with this?
Thanks.
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Re: Lucene sort in AaZz order
Posted by Trejkaz <tr...@trypticon.org>.
On Wed, Jan 16, 2019 at 2:29 AM Adrien Grand <jp...@gmail.com> wrote:
>
> Assuming that you need case-insensitive sort, the most straightforward
> way to do this would be to index the lowercase family name:
> SortedDocValuesField("by_name", new
> BytesRef(family.getName().toLowerCase(Local.ROOT))).
>
> It is also possible to implement a custom FieldComparatorSource, but
> this will likely be both more complicated and slower.
Probably actually want to use
toUpperCase(Locale.ROOT).toLowerCase(Locale.ROOT), and possibly even a
Normalizer.normalize before that. Unless you can use ICU's normaliser
with built-in case folding, which simplifies it a lot.
TX
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Re: Lucene sort in AaZz order
Posted by Adrien Grand <jp...@gmail.com>.
Assuming that you need case-insensitive sort, the most straightforward
way to do this would be to index the lowercase family name:
SortedDocValuesField("by_name", new
BytesRef(family.getName().toLowerCase(Local.ROOT))).
It is also possible to implement a custom FieldComparatorSource, but
this will likely be both more complicated and slower.
On Tue, Jan 15, 2019 at 5:59 PM egorlex <eg...@gmail.com> wrote:
>
> Hi
>
> Hi all, i need help with understand how Lucene sort works.
>
> This is example how i create sort field.
>
> document.add(new SortedDocValuesField("by_name", new
> BytesRef(family.getName())));
>
> And when i make sort by name i get result in this order - azAz, but i need
> AaZz.
>
> Could someone help me with this?
>
> Thanks.
>
>
>
>
> --
> Sent from: http://lucene.472066.n3.nabble.com/Lucene-Java-Users-f532864.html
>
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> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
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>
--
Adrien
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