Elasticsearch using escape character with shingle token filter

Elastic Stack Elasticsearch
1

I have two documents on my index. I want to play football and I want to play basketball

With use shingle token filter, i want to analyze this documents like that

I

I want

I want to

Want

Want to

Want to play etc.

And I want to search with querystring something like this play\ foot*.

I expected one record with this query but after execution, i had two records. Because Elasticsearch executed this querystring as play OR foot*. Escape character is not working in this situation.

I am using NEST library in .Net Framework. And my code is

var node = new Uri("http://localhost:9200");
            const string indexName = "exampleforshingleanalyzer";
            var settings = new ConnectionSettings(
                node,
                defaultIndex: indexName
            );
            Console.WriteLine("Program Starting...");
            var client = new ElasticClient(settings);
            client.DeleteIndex(t => t.AllIndices());
            var analyzerSettings = new CustomAnalyzer();
            analyzerSettings.Filter = new List<string>();
            analyzerSettings.Filter.Add("shingle_token_filter");
            analyzerSettings.Tokenizer = "standard";
            client.CreateIndex(indexName, t => 
                t.Analysis(a =>
                    a.TokenFilters(token => token.Add("shingle_token_filter",new ShingleTokenFilter
                    {
                        MaxShingleSize = 3,
                        MinShingleSize = 2,
                        OutputUnigrams = true,
                        TokenSeparator = "-"
                    }))
                    .Analyzers(an => an.Add("shingle_analyzer", analyzerSettings)))
                .NumberOfReplicas(1)
                .NumberOfShards(1)
                .AddMapping<FtsResult>(c => c.MapFromAttributes()
                .IgnoreConflicts()
                .Type("ftsresult")
                .Index(indexName)
                .Properties(p => p
                .String(s => s.Name(f => f.AgentText).Analyzer("shingle_analyzer").SearchAnalyzer("shingle_analyzer").IndexAnalyzer("shingle_analyzer"))
                .String(s => s.Name(f => f.CustomerText).Analyzer("shingle_analyzer").SearchAnalyzer("shingle_analyzer").IndexAnalyzer("shingle_analyzer"))
                )

            ));

            var sample = new FtsResult
            {
                Id = 1,
                AgentText = "i want to play football"
            };
            var sample2 = new FtsResult
            {
                Id = 2,
                AgentText = "i want to play basketball"
            };
            client.Index(sample, t => t.Index(indexName).Type("ftsresult"));
            client.Index(sample2, t => t.Index(indexName).Type("ftsresult"));
            client.Refresh(r => r.Index(indexName));

            //Getting two records
            var result = client.Search<FtsResult>(s => s
            .Index(indexName)
            .Query(q => q.QueryString(qs => qs.Query("play\\ foot*").AnalyzeWildcard()))
            );

            //Getting two records
            var result2 = client.Search<FtsResult>(s => s
            .Index(indexName)
            .Query(q => q.QueryString(qs => qs.Query(@"play\ foot*").AnalyzeWildcard()))
            );

        //Getting nothing
        var result3 = client.Search<FtsResult>(s => s
            .Index(indexName)
            .Query(q => q.QueryString(qs => qs.Query("\"play foot*\"").AnalyzeWildcard()))
            );

        Console.ReadLine();

And my FtsResult object is

[Serializable]
public class FtsResult
{
    public long Id { get; set; }

    [ElasticProperty(Index = FieldIndexOption.No)]
    public int Rank { get; set; }

    [ElasticProperty(Index = FieldIndexOption.Analyzed)]
    public string AgentText { get; set; }

    [ElasticProperty(Index = FieldIndexOption.No)]
    public string AgentTextTimes { get; set; }

    [ElasticProperty(Index = FieldIndexOption.Analyzed)]
    public string CustomerText { get; set; }

    [ElasticProperty(Index = FieldIndexOption.No)]
    public string CustomerTextTimes { get; set; }

    [ElasticProperty(Index = FieldIndexOption.NotAnalyzed)]
    public string EsIndiceName { get; set; }
}

I writed results with comments on result objects. I expect only one record with this query. Could anyone point me in the right direction ?

2

Can you post a recreation of your problem using curl requests please?