PlainElastic.Net facet query builder sample

gistfile1.cs

using System;
using PlainElastic.Net;
using PlainElastic.Net.Queries;
using PlainElastic.Net.Serialization;
using PlainElastic.Net.Utils;

namespace FacetQuerySample
{

    class Item
    {
        public int Id { get; set; }
        public bool Active { get; set; }
        public string Name { get; set; }
        public int Category { get; set; }
        public string Description { get; set; }
        public double Price { get; set; }
    }

    class Criterion
    {
        public string FullText { get; set; }
    }


    class Program
    {
        static void Main(string[] args)
        {
            var connection = new ElasticConnection("localhost", 9200);
            var serializer = new JsonNetSerializer();

            // Add sample item document to http://localhost:9200/store/item/ index.
            var addedItem = new Item
            {
                Id = 2,
                Active = true,
                Name = "Query Item",
                Category = 10,
                Description = "Item description text",
                Price = 200
            };
            string itemJson = serializer.Serialize(addedItem);
            connection.Put(Commands.Index("store", "item", id: addedItem.Id.AsString()).Refresh(), itemJson);

            // Build faceted query with FullText criterion defined.
            string query = BuildFacetQuery(new Criterion { FullText = "text" });
            string result = connection.Post(Commands.Search("store", "item"), query);

            // Parse facets query result 
            var searchResults = serializer.ToSearchResult<Item>(result);
            var itemsPerCategoryTerms = searchResults.facets.Facet<TermsFacetResult>("ItemsPerCategoryCount").terms;

            foreach (var facetTerm in itemsPerCategoryTerms)
            {
                Console.WriteLine("Category: {0}  Items Count: {1}".F(facetTerm.term, facetTerm.count));
            }

            Console.ReadKey();
        }


        public static string BuildFacetQuery(Criterion criterion)
        {
            return new QueryBuilder<Item>()
                  .Query(q => q
                      .QueryString(qs => qs
                          .Fields(item => item.Name, item => item.Description)
                          .Query(criterion.FullText)
                      )
                  )

                  // Facets Part
                  .Facets(facets => facets
                      .Terms(t => t
                          .FacetName("ItemsPerCategoryCount")
                          .Field(item => item.Category)
                          .Size(100)
                          )
                  )
                  .BuildBeautified();
        }   


    }
}