Prefix Queries Using NEST API

Elastic Stack Elasticsearch
1

Is there any way to analyze the prefix text as the same analyzer used in the indexing.
For example :

var searchResponse = await client.SearchAsync<Locality>(s => s.Index($"localities-{country.ToLower()}")
               .Query(q => q
                .Prefix(c => c
                .Name("named_query")
                .Boost(1.1)
                .Field(p => p.Name)
                .Value(locality.ToLower())
                .Rewrite(MultiTermQueryRewrite.TopTerms(10))
                    )

               )
            );

We keep having to use the ToLower() function to lowecase everything which is not ideal as the analysis in the index may be different.

2

Giving the note Term-level queries | Elasticsearch Guide [8.2] | Elastic It's might be possible with match_bool_prefix or via tweaking normalizer for named_query if it's a keyword field.

3

Hi,
Thanks for your reply.
Yes it is possible but we also need to include a filter in the query which none of the available options seem to allow it.

4

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