Tests.QueryDSLTests.TestDisMaxQuery C# (CSharp) Method

		public void TestDisMaxQuery()
		{
			string textType = "dismax";
			var typeSetting = new TypeSetting(textType);
			// hed is the most important field, dek is secondary
			typeSetting.AddStringField("hed").Analyzer = "standard";
			typeSetting.AddStringField("dek").Analyzer = "standard";
			client.PutMapping(index, typeSetting);
			client.Refresh();

			// d1 is an "ok" match for:  albino elephant
			var 
			dict = new Dictionary<string, object>();
			dict["id"] = "d1";
			dict["hed"] = "elephant";
			dict["dek"] = "elephant";
			var op = client.Index(index, textType, "d1", dict);
			Assert.True(op.Success);

			// d2 is a "good" match for:  albino elephant
			IndexItem 
			item = new IndexItem(textType, "d2");
			item.Add("id", "d2");
			item.Add("hed", "elephant");
			item.Add("dek", "albino");
			item.Add("dek", "elephant");
			op = client.Index(index,  item);
			Assert.True(op.Success);

			//d3 is a "better" match for:  albino elephant
			item = new IndexItem(textType, "d3");
			item.Add("id", "d3");
			item.Add("hed", "albino");
			item.Add("hed", "elephant");
			op = client.Index(index, item);
			Assert.True(op.Success);

			// d4 is the "best" match for:  albino elephant
			item = new IndexItem(textType, "d4");
			item.Add("id", "d4");
			item.Add("hed", "albino");
			item.Add("hed", "elephant");
			item.Add("dek", "albino");
			op = client.Index(index, item);
			Assert.True(op.Success);


			client.Refresh();


			var dismaxQuery = new DisjunctionMaxQuery(0.0f);
			dismaxQuery.AddQuery(new TermQuery("hed", "albino"));
			dismaxQuery.AddQuery(new TermQuery("hed", "elephant"));
			
			var result = client.Search(index, textType, dismaxQuery);
			Console.WriteLine("all docs should match");
			Assert.AreEqual(4,result.GetTotalCount());
			foreach (var o in result.GetHits().Hits)
			{
				Console.WriteLine(o.ToString());
			}

			dismaxQuery = new DisjunctionMaxQuery(0.0f);
			dismaxQuery.AddQuery(new TermQuery("dek", "albino"));
			dismaxQuery.AddQuery(new TermQuery("dek", "elephant"));

			result = client.Search(index, textType, dismaxQuery);
			Console.WriteLine("3 docs should match");
			Assert.AreEqual(3, result.GetTotalCount());
			foreach (var o in result.GetHits().Hits)
			{
				Console.WriteLine(o.ToString());
			}
			
			dismaxQuery = new DisjunctionMaxQuery(0.0f);
			dismaxQuery.AddQuery(new TermQuery("dek", "albino"));
			dismaxQuery.AddQuery(new TermQuery("dek", "elephant"));
			dismaxQuery.AddQuery(new TermQuery("hed", "albino"));
			dismaxQuery.AddQuery(new TermQuery("hed", "elephant"));

			result = client.Search(index, textType, dismaxQuery);
			Console.WriteLine("all docs should match");
			Assert.AreEqual(4, result.GetTotalCount());
			foreach (var o in result.GetHits().Hits)
			{
				Console.WriteLine(o.ToString());
			}


			dismaxQuery = new DisjunctionMaxQuery(0.01f);
			dismaxQuery.AddQuery(new TermQuery("dek", "albino"));
			dismaxQuery.AddQuery(new TermQuery("dek", "elephant"));

			result = client.Search(index, textType, dismaxQuery);
			Console.WriteLine("3 docs should match");
			float score0 = Convert.ToSingle(result.GetHits().Hits[0].Score);
			float score1 = Convert.ToSingle(result.GetHits().Hits[1].Score);
			float score2 = Convert.ToSingle(result.GetHits().Hits[2].Score);

			foreach (var o in result.GetHits().Hits)
			{
				Console.WriteLine(o.ToString());
			}

			Assert.IsTrue(score0 > score1);
			Assert.AreEqual(score1, score2);
			Assert.AreEqual(3, result.GetTotalCount());
			Assert.AreEqual("d2", result.GetHits().Hits[0].Source["id"]);


		}