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Using Completion Suggester with NEST
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| void Main() | |
| { | |
| var indexName = "stackoverflow"; | |
| var node = new SingleNodeConnectionPool(new Uri("http://localhost:9200")); | |
| var settings = new ConnectionSettings(node) | |
| .InferMappingFor<Question>(m => m | |
| .IndexName(indexName) | |
| ) | |
| .PrettyJson() | |
| .DisableDirectStreaming() | |
| .OnRequestCompleted(callDetails => | |
| { | |
| // log out the request | |
| if (callDetails.RequestBodyInBytes != null) | |
| { | |
| Console.WriteLine( | |
| $"{callDetails.HttpMethod} {callDetails.Uri} \n" + | |
| $"{Encoding.UTF8.GetString(callDetails.RequestBodyInBytes)}"); | |
| } | |
| else | |
| { | |
| Console.WriteLine($"{callDetails.HttpMethod} {callDetails.Uri}"); | |
| } | |
| Console.WriteLine(); | |
| // log out the response | |
| if (callDetails.ResponseBodyInBytes != null) | |
| { | |
| Console.WriteLine($"Status: {callDetails.HttpStatusCode}\n" + | |
| $"{Encoding.UTF8.GetString(callDetails.ResponseBodyInBytes)}\n" + | |
| $"{new string('-', 30)}\n"); | |
| } | |
| else | |
| { | |
| Console.WriteLine($"Status: {callDetails.HttpStatusCode}\n" + | |
| $"{new string('-', 30)}\n"); | |
| } | |
| }); | |
| var client = new ElasticClient(settings); | |
| if (client.IndexExists(indexName).Exists) | |
| { | |
| client.DeleteIndex(indexName); | |
| } | |
| var createIndexResponse = client.CreateIndex(indexName, c => c | |
| .Mappings(m => m | |
| .Map<Question>(u => u | |
| .AutoMap() | |
| ) | |
| ) | |
| ); | |
| var questions = new[] { | |
| new Question | |
| { | |
| Title = "Elasticsearch for .NET", | |
| TitleSuggest = new CompletionField | |
| { | |
| Input = new [] { "Elasticsearch.Net", "NEST" } | |
| } | |
| }, | |
| new Question | |
| { | |
| Title = "The Elastic stack", | |
| TitleSuggest = new CompletionField | |
| { | |
| Input = new [] { "Elasticsearch", "Logstash", "Kibana", "Beats" } | |
| } | |
| }, | |
| new Question | |
| { | |
| Title = "Kibana", | |
| TitleSuggest = new CompletionField | |
| { | |
| Input = new [] { "Kibana", "UI" } | |
| } | |
| } | |
| }; | |
| client.IndexMany(questions); | |
| client.Refresh(indexName); | |
| var input = "el"; | |
| var response = client.Search<Question>(s => s | |
| .Suggest(su => su | |
| .Completion("title", cs => cs | |
| .Field(f => f.TitleSuggest) | |
| .Prefix(input) | |
| .Fuzzy(f => f | |
| .Fuzziness(Fuzziness.Auto) | |
| ) | |
| .Size(5) | |
| ) | |
| ) | |
| ); | |
| var suggestions = | |
| from suggest in response.Suggest["title"] | |
| from option in suggest.Options | |
| select new | |
| { | |
| Id = option.Id, | |
| Text = option.Text, | |
| Score = option.Score, | |
| Source = option.Source | |
| }; | |
| } | |
| public class Question | |
| { | |
| public string Title { get; set; } | |
| public CompletionField TitleSuggest { get; set; } | |
| } |
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