Add ignore_unmapped to nested, has_parent and has_child queries

See elastic/elasticsearch#17748

Author: russcam

src/Nest/QueryDsl/Joining/HasChild/HasChildQuery.cs

@@ -27,6 +27,9 @@ public interface IHasChildQuery : IQuery
 
 		[JsonProperty("inner_hits")]
 		IInnerHits InnerHits { get; set; }
+
+		[JsonProperty("ignore_unmapped")]
+		bool? IgnoreUnmapped { get; set; }
 	}
 
 	public class HasChildQuery : QueryBase, IHasChildQuery
@@ -42,6 +45,7 @@ public class HasChildQuery : QueryBase, IHasChildQuery
 		public int? MaxChildren { get; set; }
 		public QueryContainer Query { get; set; }
 		public IInnerHits InnerHits { get; set; }
+		public bool? IgnoreUnmapped { get; set; }
 
 		internal override void InternalWrapInContainer(IQueryContainer c) => c.HasChild = this;
 		internal static bool IsConditionless(IHasChildQuery q) => q.Query == null || q.Query.IsConditionless || q.Type == null;
@@ -62,6 +66,7 @@ public class HasChildQueryDescriptor<T>
 		int? IHasChildQuery.MaxChildren { get; set; }
 		QueryContainer IHasChildQuery.Query { get; set; }
 		IInnerHits IHasChildQuery.InnerHits { get; set; }
+		bool? IHasChildQuery.IgnoreUnmapped { get; set; }
 
 		public HasChildQueryDescriptor()
 		{
@@ -84,5 +89,8 @@ public HasChildQueryDescriptor<T> Query(Func<QueryContainerDescriptor<T>, QueryC
 
 		public HasChildQueryDescriptor<T> InnerHits(Func<InnerHitsDescriptor<T>, IInnerHits> selector = null) =>
 			Assign(a => a.InnerHits = selector.InvokeOrDefault(new InnerHitsDescriptor<T>()));
+
+		public HasChildQueryDescriptor<T> IgnoreUnmapped(bool ignoreUnmapped = false) =>
+			Assign(a => a.IgnoreUnmapped = ignoreUnmapped);
 	}
 }

src/Nest/QueryDsl/Joining/HasParent/HasParentQuery.cs

@@ -23,6 +23,8 @@ public interface IHasParentQuery : IQuery
 		[JsonProperty("inner_hits")]
 		IInnerHits InnerHits { get; set; }
 
+		[JsonProperty("ignore_unmapped")]
+		bool? IgnoreUnmapped { get; set; }
 	}
 
 	public class HasParentQuery : QueryBase, IHasParentQuery
@@ -37,12 +39,13 @@ public class HasParentQuery : QueryBase, IHasParentQuery
 		public bool? Score{ get; set; }
 		public QueryContainer Query { get; set; }
 		public IInnerHits InnerHits { get; set; }
+		public bool? IgnoreUnmapped { get; set; }
 
 		internal override void InternalWrapInContainer(IQueryContainer c) => c.HasParent = this;
 		internal static bool IsConditionless(IHasParentQuery q) => q.Query == null || q.Query.IsConditionless || q.Type == null;
 	}
 
-	public class HasParentQueryDescriptor<T> 
+	public class HasParentQueryDescriptor<T>
 		: QueryDescriptorBase<HasParentQueryDescriptor<T>, IHasParentQuery>
 		, IHasParentQuery where T : class
 	{
@@ -56,6 +59,7 @@ public class HasParentQueryDescriptor<T>
 		bool? IHasParentQuery.Score { get; set; }
 		IInnerHits IHasParentQuery.InnerHits { get; set; }
 		QueryContainer IHasParentQuery.Query { get; set; }
+		bool? IHasParentQuery.IgnoreUnmapped { get; set; }
 
 		public HasParentQueryDescriptor() { Self.Type = TypeName.Create<T>(); }
 
@@ -72,5 +76,8 @@ public HasParentQueryDescriptor<T> Query(Func<QueryContainerDescriptor<T>, Query
 
 		public HasParentQueryDescriptor<T> InnerHits(Func<InnerHitsDescriptor<T>, IInnerHits> selector = null) =>
 			Assign(a => a.InnerHits = selector.InvokeOrDefault(new InnerHitsDescriptor<T>()));
+
+		public HasParentQueryDescriptor<T> IgnoreUnmapped(bool ignoreUnmapped = false) =>
+			Assign(a => a.IgnoreUnmapped = ignoreUnmapped);
 	}
 }

src/Nest/QueryDsl/Joining/Nested/NestedQuery.cs

@@ -20,6 +20,8 @@ public interface INestedQuery : IQuery
 		[JsonProperty("inner_hits")]
 		IInnerHits InnerHits { get; set; }
 
+		[JsonProperty("ignore_unmapped")]
+		bool? IgnoreUnmapped { get; set; }
 	}
 
 	public class NestedQuery : QueryBase, INestedQuery
@@ -29,13 +31,14 @@ public class NestedQuery : QueryBase, INestedQuery
 		public QueryContainer Query { get; set; }
 		public Field Path { get; set; }
 		public IInnerHits InnerHits { get; set; }
+		public bool? IgnoreUnmapped { get; set; }
 
 		internal override void InternalWrapInContainer(IQueryContainer c) => c.Nested = this;
 		internal static bool IsConditionless(INestedQuery q) => q.Path == null || q.Query.IsConditionless();
 	}
 
 	[JsonObject(MemberSerialization = MemberSerialization.OptIn)]
-	public class NestedQueryDescriptor<T> 
+	public class NestedQueryDescriptor<T>
 		: QueryDescriptorBase<NestedQueryDescriptor<T>, INestedQuery>
 		, INestedQuery where T : class
 	{
@@ -44,8 +47,9 @@ public class NestedQueryDescriptor<T>
 		QueryContainer INestedQuery.Query { get; set; }
 		Field INestedQuery.Path { get; set; }
 		IInnerHits INestedQuery.InnerHits { get; set; }
+		bool? INestedQuery.IgnoreUnmapped { get; set; }
 
-		public NestedQueryDescriptor<T> Query(Func<QueryContainerDescriptor<T>, QueryContainer> selector) => 
+		public NestedQueryDescriptor<T> Query(Func<QueryContainerDescriptor<T>, QueryContainer> selector) =>
 			Assign(a => a.Query = selector?.Invoke(new QueryContainerDescriptor<T>()));
 
 		public NestedQueryDescriptor<T> ScoreMode(NestedScoreMode scoreMode) => Assign(a => a.ScoreMode = scoreMode);
@@ -54,7 +58,10 @@ public NestedQueryDescriptor<T> Query(Func<QueryContainerDescriptor<T>, QueryCon
 
 		public NestedQueryDescriptor<T> Path(Expression<Func<T, object>> objectPath) => Assign(a => a.Path = objectPath);
 
-		public NestedQueryDescriptor<T> InnerHits(Func<InnerHitsDescriptor<T>, IInnerHits> selector = null) => 
-			Assign(a => a.InnerHits = selector.InvokeOrDefault(new InnerHitsDescriptor<T>()));	
+		public NestedQueryDescriptor<T> InnerHits(Func<InnerHitsDescriptor<T>, IInnerHits> selector = null) =>
+			Assign(a => a.InnerHits = selector.InvokeOrDefault(new InnerHitsDescriptor<T>()));
+
+		public NestedQueryDescriptor<T> IgnoreUnmapped(bool ignoreUnmapped = false) =>
+			Assign(a => a.IgnoreUnmapped = ignoreUnmapped);
 	}
 }

src/Tests/QueryDsl/Joining/HasParent/HasParentQueryUsageTests.cs

@@ -16,6 +16,7 @@ public HasParentUsageTests(ReadOnlyCluster i, EndpointUsage usage) : base(i, usa
 				boost = 1.1,
 				type = "developer",
 				score = true,
+				ignore_unmapped = true,
 				query = new
 				{
 					match_all = new { }
@@ -34,7 +35,8 @@ public HasParentUsageTests(ReadOnlyCluster i, EndpointUsage usage) : base(i, usa
 			Type = Infer.Type<Developer>(),
 			InnerHits = new InnerHits { Explain = true },
 			Query = new MatchAllQuery(),
-			Score = true
+			Score = true,
+			IgnoreUnmapped = true
 		};
 
 		protected override QueryContainer QueryFluent(QueryContainerDescriptor<Project> q) => q
@@ -44,7 +46,7 @@ protected override QueryContainer QueryFluent(QueryContainerDescriptor<Project>
 				.InnerHits(i=>i.Explain())
 				.Score(true)
 				.Query(qq=>qq.MatchAll())
-
+				.IgnoreUnmapped(true)
 			);
 
 		protected override ConditionlessWhen ConditionlessWhen => new ConditionlessWhen<IHasParentQuery>(a => a.HasParent)

src/Tests/QueryDsl/Joining/Nested/NestedQueryUsageTests.cs

@@ -31,6 +31,7 @@ public NestedUsageTests(ReadOnlyCluster i, EndpointUsage usage) : base(i, usage)
 						{ "curatedTags.name", new JArray("lorem", "ipsum") }
 					}
 				},
+				ignore_unmapped = false,
 				path = "curatedTags",
 				inner_hits = new
 				{
@@ -49,7 +50,8 @@ public NestedUsageTests(ReadOnlyCluster i, EndpointUsage usage) : base(i, usage)
 			{
 				Field = Field<Project>(p => p.CuratedTags.First().Name),
 				Terms = new[] { "lorem", "ipsum" }
-			}
+			},
+			IgnoreUnmapped = false
 		};
 
 		protected override QueryContainer QueryFluent(QueryContainerDescriptor<Project> q) => q
@@ -64,6 +66,7 @@ protected override QueryContainer QueryFluent(QueryContainerDescriptor<Project>
 						.Terms("lorem", "ipsum")
 					)
 				)
+				.IgnoreUnmapped()
 			);
 
 		protected override ConditionlessWhen ConditionlessWhen => new ConditionlessWhen<INestedQuery>(a => a.Nested)