Hi Mikhail,
Thanks for your explanation! I fully understand now.
Best regards,
Mingchun
2025年2月6日(木) 15:55 Mikhail Khludnev <m...@apache.org>:
> Hello Mingchun.
> Perhaps it can not "uninvert" (obtain docValues/fieldcache -like
> representation) for a text field.
> facet=enum uses inverted index to deal with text fields: it just loops term
> dictionary and check an intersection count between result docset and term's
> docset.
> From the other side: analysis is not applied for string fields that does
> not allow to apply a tokenizer.
> However if an application code create pathes /a /a/b /a/b/c itself,
> faceting over doc values will work.
>
> On Thu, Feb 6, 2025 at 2:56 AM Mingchun Zhao <mingchun.zha...@gmail.com>
> wrote:
>
> > Hi,
> >
> > Why does faceting not work in Solr 9.8 when using PathHierarchyTokenizer
> > for facet.field without specifying the facet.method=enum parameter?
> >
> > Here are the details:
> >
> > - fieldType
> >
> > ```xml
> > <fieldType name="path_hierarchy" class="solr.TextField">
> > <analyzer type="index">
> > <tokenizer name="pathHierarchy" delimiter="/"/>
> > </analyzer>
> > <analyzer type="query">
> > <tokenizer name="keyword"/>
> > </analyzer>
> > </fieldType>
> > ```
> >
> > - field
> >
> > ```xml
> > <field name="category_path" type="path_hierarchy" indexed="true" stored=
> > "false" required="false" multiValued="false"/>
> > ```
> >
> > - index data
> >
> > ```json
> > [
> > {
> > "id": "1",
> > "category_path": "foo/bar/baz"
> > }
> > ]
> > ```
> >
> > - query without facet.method=enum
> >
> > ```bash
> > curl "
> >
> >
> http://localhost:8983/solr/core/select?q=*:*&facet=true&facet.field=category_path
> > "
> > ```
> >
> > ```json
> > "facet_counts":{
> > "facet_queries":{ },
> > "facet_fields":{
> > "category_path":[ ]
> > },
> > "facet_ranges":{ },
> > "facet_intervals":{ },
> > "facet_heatmaps":{ }
> > }
> > ```
> >
> > - query with facet.method=enum
> >
> > ```bash
> > curl "
> >
> >
> http://localhost:8983/solr/core/select?q=*:*&facet=true&facet.field=category_path&facet.method=enum
> > "
> > ```
> >
> > ```json
> > "facet_counts":{
> > "facet_queries":{ },
> > "facet_fields":{
> > "category_path":["foo",1,"foo/bar",1,"foo/bar/baz",1]
> > },
> > "facet_ranges":{ },
> > "facet_intervals":{ },
> > "facet_heatmaps":{ }
> > }
> > ```
> >
> > Regards,
> > Mingchun
> >
>
>
> --
> Sincerely yours
> Mikhail Khludnev
>
