Hello Sebastian,
This the natural sort order, just look at an ASCII-table. If you want
charachters nicely bundled together you can either make a complicated
Comparator or CopyField the original string value to a analyzed Text field
that has a KeywordTokenizer, and an ASCIIFoldingFilter configured.
Sort on that field, and do a secondary sort on the original field to take
care of the cases.
Regards,
Markus
Op di 1 feb. 2022 om 13:07 schreef Sebastian Riemer <s.rie...@littera.eu>:
> I am using Solr 8.10
>
>
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> -----Ursprüngliche Nachricht-----
> Von: Sebastian Riemer <s.rie...@littera.eu>
> Gesendet: Dienstag, 1. Februar 2022 12:58
> An: solr-u...@lucene.apache.org
> Betreff: Customize sort-behaviour on solr.StrField for German language
>
> Hello,
>
> I have documents with family names in german language context.
> The field type is defined like this: <fieldType name="string"
> class="solr.StrField" sortMissingLast="true" />
>
> When sorting by this family name, I get results ordered like that:
>
> Ascending order:
> 1. Bart
> 2. Otz
> 3. Ozzbourne
> 4. Zacharias
> 5. bariton
> 6. biene
> 7. burtsch
> 8. ozza
> 9. Ádele
> 10. Òle
> 11. Ônna
> 12. Ötz
> 13. ägnie
> 14. órthega
>
> So, the ordering is:
>
> 1. A-Z (Uppercase)
> 2. a-z (Lowercase)
> 3. Umlauts and special accents
>
> That ordering seems suprising to me, I'd prefer it like this:
>
> 1. aäàâ-z (Lowercase)
> 2. AÄÀÂ-Z (Uppercase)
>
> Or in other words, lowercase before uppercase, and Umlauts and Special
> accents after its "natural character".
>
> Here is the full query fort he above example:
>
> start=0
> &rows=50
> &fq=tenant_id:1
> &fq=u_markedAsDeleted_b:false
>
> &fq={!tag%3Du_cg_customergroup_0}(((u_customerGroupMemberships_customergroup_cp_ts_ns:(24))))
> &fq=u_id_cp_s:[*+TO+*]&q=*:*
> &facet=true
> &facet.missing=true
> &facet.sort=count
> &facet.mincount=1
> &sort=u_familyName_cp_s+asc,u_userName_cp_s+desc
>
> &qf=u_userName_cp_s^20+u_displayName_cp_s^20++text^2+text_en+text_de+text_it
> &pf=u_userName_cp_s^100+u_displayName_cp_s^20++text^10
> &mm=100%25
>
>
> Could you please give me some direction which parts of the documentation I
> can study to learn about sorting and how to achieve a custom sorting?
>
> Thank you and best regards,
>
> Sebastian
>
>
