Add enable_position_increments as a Property on ITokenCountProperty

What I’m trying to achieve I am trying to create a ‘CreateIndexDescriptor’ mapping descriptor using NEST Fluent API and I found that the enable_position_increments is not available on the TokenCountProperty class or on the TokenCountPropertyDescriptor (https://github.com/elastic/elasticsearch-net/blob/master/src/Nest/Mapping/Types/Specialized/TokenCount/TokenCountProperty.cs)

For my use case scenario, I need to store the token_count on a StopWords Analayzer with enable_position_increments set to false so that in stores the count after the Stopwords analyzer strips out the stop words. As per documentation here, https://www.elastic.co/guide/en/elasticsearch/reference/current/token-count.html , it defaults to true. So i need to explicitly set it to false for my use case.

This is how I set the “token_count” property (portion of the code on the fluent api)

.Properties(ps => ps.Text(
    ns => ns.Name(a => a.Value)
            .Analyzer("name_analyzer")
            .Fields(fs => fs
                .Text(ss => ss.Name("StopWords")
                    .Analyzer("stop_words_analyzer")
                    .Fields(f => f
                        .TokenCount(tc => tc
                                    .Name("length")
                                    .Analyzer("standard")))))

which generates this portion as a part of my mapping JSON

"StopWords": { 
    "type": "text",
    "fields": { 
        "length": { 
            "type": "token_count",
            "analyzer": "standard"
            }
        },
        "analyzer": "stop_words_analyzer"
}

I want to be able to add enable_position_increments to this JSON via the NEST Fluent API

"StopWords": { 
    "type": "text",
    "fields": { 
        "length": { 
            "type": "token_count",
            "analyzer": "standard",
           "enable_position_increments" : false
            }
        },
        "analyzer": "stop_words_analyzer"
}

The solution I would like A bool property on ITokenCountProperty

[DataMember(Name ="enable_position_increments")]
bool? EnablePositionIncrements { get; set; }

and the Descriptor implementation for the same

Alternatives considered I tried using the Custom method as suggested in guide post (https://www.elastic.co/guide/en/elasticsearch/client/net-api/current/extending-nest-types.html) but that Custom method seems to be available only on the PropertiesDescriptor class and not on the IPropertiesDescriptor interface… It’s not available on the TokenCountPropertiesDescriptor class

Additional context Is there any other workaround that I can use to set the enable_position_increments to false via NEST Client?

[stevejgordon]

@rdasan You’re welcome. I don’t have exact dates for it yet, but it’ll hopefully be sometime relatively soon in the new year.

[stevejgordon]

I’ve merged #5188, thank yo @rdasan. I’ll backport this and it’ll be included in the 7.11 release.