Add support for index_phrases (#3433)

(cherry picked from commit 4e3543b)

Author: Mpdreamz

src/Nest/Mapping/Types/Core/Text/TextAttribute.cs

@@ -19,6 +19,7 @@ public TextAttribute() : base(FieldType.Text) { }
 		IFielddataFrequencyFilter ITextProperty.FielddataFrequencyFilter { get; set; }
 		ITextIndexPrefixes ITextProperty.IndexPrefixes { get; set; }
 		bool? ITextProperty.Index { get; set; }
+		bool? ITextProperty.IndexPhrases { get; set; }
 		IndexOptions? ITextProperty.IndexOptions { get; set; }
 		bool? ITextProperty.Norms { get; set; }
 		int? ITextProperty.PositionIncrementGap { get; set; }
@@ -32,6 +33,7 @@ public TextAttribute() : base(FieldType.Text) { }
 		public bool Fielddata { get => Self.Fielddata.GetValueOrDefault(); set => Self.Fielddata = value; }
 		public bool Index { get => Self.Index.GetValueOrDefault(); set => Self.Index = value; }
 		public IndexOptions IndexOptions { get => Self.IndexOptions.GetValueOrDefault(); set => Self.IndexOptions = value; }
+		public bool IndexPhrases { get => Self.IndexPhrases.GetValueOrDefault(); set => Self.IndexPhrases = value; }
 		public int PositionIncrementGap { get => Self.PositionIncrementGap.GetValueOrDefault(); set => Self.PositionIncrementGap = value; }
 		public string SearchAnalyzer { get => Self.SearchAnalyzer; set => Self.SearchAnalyzer = value; }
 		public string SearchQuoteAnalyzer { get => Self.SearchQuoteAnalyzer; set => Self.SearchQuoteAnalyzer = value; }

src/Nest/Mapping/Types/Core/Text/TextProperty.cs

@@ -34,6 +34,9 @@ public interface ITextProperty : ICoreProperty
 		[JsonProperty("index")]
 		bool? Index { get; set; }
 
+		[JsonProperty("index_phrases")]
+		bool? IndexPhrases { get; set; }
+
 		[JsonProperty("index_options")]
 		IndexOptions? IndexOptions { get; set; }
 
@@ -58,6 +61,7 @@ public TextProperty() : base(FieldType.Text) { }
 		public IFielddataFrequencyFilter FielddataFrequencyFilter { get; set; }
 		public ITextIndexPrefixes IndexPrefixes { get; set; }
 		public bool? Index { get; set; }
+		public bool? IndexPhrases { get; set; }
 		public IndexOptions? IndexOptions { get; set; }
 		public bool? Norms { get; set; }
 		public int? PositionIncrementGap { get; set; }
@@ -78,6 +82,7 @@ public class TextPropertyDescriptor<T>
 		IFielddataFrequencyFilter ITextProperty.FielddataFrequencyFilter { get; set; }
 		ITextIndexPrefixes ITextProperty.IndexPrefixes { get; set; }
 		bool? ITextProperty.Index { get; set; }
+		bool? ITextProperty.IndexPhrases { get; set; }
 		IndexOptions? ITextProperty.IndexOptions { get; set; }
 		bool? ITextProperty.Norms { get; set; }
 		int? ITextProperty.PositionIncrementGap { get; set; }
@@ -96,6 +101,7 @@ public TextPropertyDescriptor<T> FielddataFrequencyFilter(Func<FielddataFrequenc
 		public TextPropertyDescriptor<T> IndexPrefixes(Func<TextIndexPrefixesDescriptor, ITextIndexPrefixes> selector) =>
 			Assign(a => a.IndexPrefixes = selector?.Invoke(new TextIndexPrefixesDescriptor()));
 		public TextPropertyDescriptor<T> Index(bool? index = true) => Assign(a => a.Index = index);
+		public TextPropertyDescriptor<T> IndexPhrases(bool? indexPhrases = true) => Assign(a => a.IndexPhrases = indexPhrases);
 		public TextPropertyDescriptor<T> IndexOptions(IndexOptions? indexOptions) => Assign(a => a.IndexOptions = indexOptions);
 		public TextPropertyDescriptor<T> Norms(bool? enabled = true) => Assign(a => a.Norms = enabled);
 		public TextPropertyDescriptor<T> PositionIncrementGap(int? positionIncrementGap) => Assign(a => a.PositionIncrementGap = positionIncrementGap);

src/Tests/Tests/Mapping/Types/Core/Text/TextPropertyTests.cs

@@ -7,7 +7,84 @@
 
 namespace Tests.Mapping.Types.Core.Text
 {
+
+	[SkipVersion("<6.4.0", "index_phrases is a new feature")]
+	public class TextPropertyIndexPhrasesTests : PropertyTestsBase
+	{
+		public TextPropertyIndexPhrasesTests(WritableCluster cluster, EndpointUsage usage) : base(cluster, usage) { }
+
+		protected override object ExpectJson => new
+		{
+			properties = new
+			{
+				name = new
+				{
+					type = "text",
+					index_phrases = true
+				}
+			}
+		};
+
+
+		protected override Func<PropertiesDescriptor<Project>, IPromise<IProperties>> FluentProperties => f => f
+				.Text(s => s
+					.Name(p => p.Name)
+					.IndexPhrases()
+				);
+
+
+		protected override IProperties InitializerProperties => new Properties
+		{
+			{ "name", new TextProperty { IndexPhrases = true } }
+		};
+	}
+
 	[SkipVersion("<6.3.0", "index_prefixes is a new feature")]
+	public class TextPropertyIndexPrefixesTests : PropertyTestsBase
+	{
+		public TextPropertyIndexPrefixesTests(WritableCluster cluster, EndpointUsage usage) : base(cluster, usage) { }
+
+		protected override object ExpectJson => new
+		{
+			properties = new
+			{
+				name = new
+				{
+					type = "text",
+					index_prefixes = new
+					{
+						min_chars = 1,
+						max_chars = 10
+					}
+				}
+			}
+		};
+
+
+		protected override Func<PropertiesDescriptor<Project>, IPromise<IProperties>> FluentProperties => f => f
+				.Text(s => s
+					.Name(p => p.Name)
+					.IndexPrefixes(i => i
+						.MinCharacters(1)
+						.MaxCharacters(10)
+					)
+				);
+
+
+		protected override IProperties InitializerProperties => new Properties
+		{
+			{ "name", new TextProperty
+				{
+					IndexPrefixes = new TextIndexPrefixes
+					{
+						MinCharacters = 1,
+						MaxCharacters = 10
+					}
+				}
+			}
+		};
+	}
+
 	public class TextPropertyTests : PropertyTestsBase
 	{
 		public TextPropertyTests(WritableCluster cluster, EndpointUsage usage) : base(cluster, usage) { }