Rewriting: *) https://lucene.apache.org/solr/guide/8_8/json-request-api.html#json-parameter-merging , there is a way to represent most (all?) of the structure with json.x parameter. *) Also, you can create custom Request Handlers in solrconfig.xml with a lot of those parameters either as defaults (overridable or not) or as paramsets and refer to them by name with useParams in file or in query ( https://lucene.apache.org/solr/guide/8_8/request-parameters-api.html#the-useparams-parameter)
Sorting: not so sure, but I wonder if you can inject a synthetic field or function to do 'max/min' on the date even under the category (as a 3rd level nesting)? Also, another approach that came to me afterwards was to use relatedness: https://lucene.apache.org/solr/guide/8_8/json-facet-api.html#relatedness-and-semantic-knowledge-graphs and try to identify categories with foreground being recent-date-range and the background being everything (or relevant subset of such). This may be cloud-only and totally may not work. I had some education material related to this at slides 19+ of https://www.slideshare.net/arafalov/searching-for-ai-leveraging-solr-for-classic-artificial-intelligence-tasks Regards, Alex. On Fri, 5 Feb 2021 at 14:31, Hullegård, Jimi <jimi.hulleg...@svensktnaringsliv.se> wrote: > > Ah, I never thought about grouping on date ranges, and nesting the faceting > like that. Interesting! I managed to do a quick test query that seems to give > me what I want: > > { > "query": "*:*", > "filter": "+category:* +modified:[NOW/DAY-60DAYS TO *]", > "limit": 0, > "facet": { > "ranges": { > "type": "range", > "field": "modified", > "start": "NOW/DAY-60DAYS", > "end": "NOW/DAY", > "gap": "+7DAY", > "sort": "index", > "facet": { > "categories": { > "type": "terms", > "field": "category", > "limit": -1 > } > } > } > } > } > > > But... this query, as well as all the examples, are in json query format, in > a request body. The actual query will be sent using a custom API that only > accepts a regular URL query, with parameters. Any idea how I can rewrite the > json query above into a URL query? > > Also, it would be easier to use the result if the ranges were sorted by the > date in descending order, but no matter what I tried I couldn't get it to > work. I thought that "sort": "index desc" should do the trick, but it seems > that index sort can't be reversed? > > > Alexandre Rafalovitch wrote: > > > > This feels like basic faceting on category, but you are trying to make a > > latest record, rather than count as a sorting/grouping principle. > > > > How about using JSON Facets? > > > > https://lucene.apache.org/solr/guide/8_8/json-facet-api.html > > > > I would do the first level as range facet and do your dates at whatever > > granularity (say 1 week?) and then second level category terms. > > > > Let us know if it works. It is an interesting question. > > > Svenskt Näringsliv är företagsamhetens röst i Sverige. Vi samverkar med 50 > arbetsgivar- och branschorganisationer och är den gemensamma rösten för 60 > 000 företag med nästan 2 miljoner medarbetare. Vår uppgift är att tala för > alla företag och branscher, även de som ännu inte finns men som kan uppstå om > förutsättningarna är de rätta. Ett bättre företagsklimat för ett bättre > Sverige. Det är vårt uppdrag. > > Svenskt Näringsliv behandlar dina personuppgifter i enlighet med GDPR. Här > kan du läsa mer om vår behandling och dina rättigheter, > Integritetspolicy<https://www.svensktnaringsliv.se/dataskydd/integritet-och-behandling-av-personuppgifter_697219.html?utm_source=sn-email&utm_medium=email>
