Hightlight and fuzzy query?

[elastic]

Hightlight and fuzzy query?

[Mpdreamz]

Here is an example how you can do this:

  var result = this._elasticClient.Search<MyDTO>(s =>  s
     .From(page * searchDescriptor.PageSize)
     .Take(searchDescriptor.PageSize)
     .Highlight(h => h
       .PreTags("<mark>")
       .PostTags("</mark>")
       .OnFields(
         f => f.OnField(a => a.Title).NumberOfFragments(0),
         f => f.OnField(a => a.Description).FragmentSize(450).BoundaryMaxSize(40)
       )
       .Encoder("html")
     )
     .Query(... Fuzzy here ...)
  );

Elasticsearch wont return the highlights in place so we have to get to them differently.

Because i cannot guess which highlight maps where in your DTO (if you even want this that is), you have to loop over result.DocumentsWithMetaData. Which gives you a Hit<MyDto> object which has a Value property which is the mapped MyDto object and a Highlight property which has all the highlights for that hit.

[aqbjteddy]

Hi, I encountered a simple problem

public class Post{
    public string Title{get;set;}
    pulibc string Keywords{get;set;}
}

                    s.Query(q => q
                        .QueryString(qs => qs
                            .Query("is")
                            .OnField(f => f.Keywords)
                        )
                    );

I can't find the record titled "This" ?

and how to let the title to be "This"?

please note that the search is based on another field(Keywords)

Thanks

[Mpdreamz]

Hi this is more of a general elasticsearch question, your general best bet to get those answered is the elasticsearch mailing list. The reason it wont find it is because "this" is not broken in to "th" and "is" by default so the terms index dont match "is". Also in general lucene only supports leading wildcards so "th_" will work but "_is" won't.

[aqbjteddy]

Hi, this is my post class below

    public class ProductPost
    {
        public int Id { get; set; }

        [ElasticProperty(OmitNorms = true, Index = FieldIndexOption.not_analyzed)]
        public string Title { get; set; }

        [ElasticProperty(Index = FieldIndexOption.analyzed, Analyzer = "smartcn")]
        public string Keyword
        {
            get;
            private set;
        }
    }

and here is index code

this.Client.IndexManyAsync(productList);

search

                  s.Query(q => q
                        .QueryString(qs => qs
                            .Query(query)
                            .OnField(f => f.Keyword)
                            .Analyzer("smartcn")
                        )
                    );

but i still can not find the real products.

[aqbjteddy]

This is a question of how to cut words in elasticsearch, thank you @Mpdreamz