Obsolete AllField and IndexField

src/Nest/Indices/MappingManagement/GetFieldMapping/FieldMappingFormatter.cs

@@ -37,8 +37,10 @@ public IReadOnlyDictionary<Field, IFieldMapping> Deserialize(ref JsonReader read
 					switch (value)
 					{
 						case 0:
+#pragma warning disable 618
 							mapping = formatterResolver.GetFormatter<AllField>()
 								.Deserialize(ref reader, formatterResolver);
+#pragma warning restore 618
 							break;
 						case 1:
 							mapping = formatterResolver.GetFormatter<SourceField>()
@@ -49,8 +51,10 @@ public IReadOnlyDictionary<Field, IFieldMapping> Deserialize(ref JsonReader read
 								.Deserialize(ref reader, formatterResolver);
 							break;
 						case 3:
+#pragma warning disable 618
 							mapping = formatterResolver.GetFormatter<IndexField>()
 								.Deserialize(ref reader, formatterResolver);
+#pragma warning restore 618
 							break;
 						case 4:
 							mapping = formatterResolver.GetFormatter<SizeField>()

src/Nest/Indices/MappingManagement/PutMapping/PutMappingRequest.cs

@@ -18,6 +18,7 @@ public partial interface IPutMappingRequest<TDocument> where TDocument : class {
 	public partial class PutMappingRequest
 	{
 		/// <inheritdoc />
+		[Obsolete("The _all field is no longer supported in Elasticsearch 7.x and will be removed in the next major release. The value will not be sent in a request. An _all like field can be achieved using copy_to")]
 		public IAllField AllField { get; set; }
 
 		/// <inheritdoc />
@@ -36,6 +37,7 @@ public partial class PutMappingRequest
 		public IFieldNamesField FieldNamesField { get; set; }
 
 		/// <inheritdoc />
+		[Obsolete("Configuration for the _index field is no longer supported in Elasticsearch 7.x and will be removed in the next major release.")]
 		public IIndexField IndexField { get; set; }
 
 		/// <inheritdoc />
@@ -63,12 +65,14 @@ public partial class PutMappingRequest<TDocument> where TDocument : class { }
 	[DataContract]
 	public partial class PutMappingDescriptor<TDocument> where TDocument : class
 	{
+		[Obsolete("The _all field is no longer supported in Elasticsearch 7.x and will be removed in the next major release. The value will not be sent in a request. An _all like field can be achieved using copy_to")]
 		IAllField ITypeMapping.AllField { get; set; }
 		bool? ITypeMapping.DateDetection { get; set; }
 		Union<bool, DynamicMapping> ITypeMapping.Dynamic { get; set; }
 		IEnumerable<string> ITypeMapping.DynamicDateFormats { get; set; }
 		IDynamicTemplateContainer ITypeMapping.DynamicTemplates { get; set; }
 		IFieldNamesField ITypeMapping.FieldNamesField { get; set; }
+		[Obsolete("Configuration for the _index field is no longer supported in Elasticsearch 7.x and will be removed in the next major release.")]
 		IIndexField ITypeMapping.IndexField { get; set; }
 		IDictionary<string, object> ITypeMapping.Meta { get; set; }
 		bool? ITypeMapping.NumericDetection { get; set; }
@@ -102,10 +106,12 @@ public PutMappingDescriptor<TDocument> AutoMap(IPropertyVisitor visitor = null,
 		public PutMappingDescriptor<TDocument> Dynamic(bool? dynamic = true) => Assign(dynamic, (a, v) => a.Dynamic = v);
 
 		/// <inheritdoc cref="ITypeMapping.AllField" />
+		[Obsolete("The _all field is no longer supported in Elasticsearch 7.x and will be removed in the next major release. The value will not be sent in a request. An _all like field can be achieved using copy_to")]
 		public PutMappingDescriptor<TDocument> AllField(Func<AllFieldDescriptor, IAllField> allFieldSelector) =>
 			Assign(allFieldSelector, (a, v) => a.AllField = v?.Invoke(new AllFieldDescriptor()));
 
 		/// <inheritdoc cref="ITypeMapping.IndexField" />
+		[Obsolete("Configuration for the _index field is no longer supported in Elasticsearch 7.x and will be removed in the next major release.")]
 		public PutMappingDescriptor<TDocument> IndexField(Func<IndexFieldDescriptor, IIndexField> indexFieldSelector) =>
 			Assign(indexFieldSelector, (a, v) => a.IndexField = v?.Invoke(new IndexFieldDescriptor()));
 
@@ -118,6 +124,7 @@ public PutMappingDescriptor<TDocument> DisableSizeField(bool? disabled = true) =
 			Assign(disabled, (a, v) => a.SizeField = new SizeField { Enabled = !v });
 
 		/// <inheritdoc cref="ITypeMapping.IndexField" />
+		[Obsolete("Configuration for the _index field is no longer supported in Elasticsearch 7.x and will be removed in the next major release.")]
 		public PutMappingDescriptor<TDocument> DisableIndexField(bool? disabled = true) =>
 			Assign(disabled, (a, v) => a.IndexField = new IndexField { Enabled = !v });
 

src/Nest/Mapping/Mappings.cs

@@ -13,7 +13,7 @@ namespace Nest
 	/// new features in the future.
 	/// </pre>
 	/// </summary>
-	[Obsolete("Mappings are no longer type dependant, please use TypeMapping directly")]
+	[Obsolete("Mappings are no longer type dependent, please use TypeMapping directly")]
 	public class Mappings : ObsoleteMappingsBase, ITypeMapping, IEnumerable<ITypeMapping>
 	{
 		private IEnumerable<ITypeMapping> AsEnumerable => new[] { new TypeMapping() };
@@ -29,7 +29,8 @@ public class Mappings : ObsoleteMappingsBase, ITypeMapping, IEnumerable<ITypeMap
 
 	public abstract class ObsoleteMappingsBase : ITypeMapping
 	{
-		[DataMember(Name = "_all")]
+		[IgnoreDataMember]
+		[Obsolete("The _all field is no longer supported in Elasticsearch 7.x and will be removed in the next major release. The value will not be sent in a request. An _all like field can be achieved using copy_to")]
 		public IAllField AllField { get => Wrapped.AllField; set => Wrapped.AllField = value; }
 		[DataMember(Name = "date_detection")]
 		bool? ITypeMapping.DateDetection { get => Wrapped.DateDetection; set => Wrapped.DateDetection = value; }
@@ -41,7 +42,8 @@ public abstract class ObsoleteMappingsBase : ITypeMapping
 		IDynamicTemplateContainer ITypeMapping.DynamicTemplates { get => Wrapped.DynamicTemplates; set => Wrapped.DynamicTemplates = value; }
 		[DataMember(Name = "_field_names")]
 		IFieldNamesField ITypeMapping.FieldNamesField { get => Wrapped.FieldNamesField; set => Wrapped.FieldNamesField = value; }
-		[DataMember(Name = "_index")]
+		[IgnoreDataMember]
+		[Obsolete("Configuration for the _index field is no longer supported in Elasticsearch 7.x and will be removed in the next major release.")]
 		IIndexField ITypeMapping.IndexField { get => Wrapped.IndexField; set => Wrapped.IndexField = value; }
 		[DataMember(Name = "_meta")]
 		IDictionary<string, object> ITypeMapping.Meta { get => Wrapped.Meta; set => Wrapped.Meta = value; }

src/Nest/Mapping/MetaFields/All/AllField.cs

@@ -1,7 +1,9 @@
-using System.Runtime.Serialization;
+using System;
+using System.Runtime.Serialization;
 
 namespace Nest
 {
+	[Obsolete("The _all field is no longer supported in Elasticsearch 7.x and will be removed in the next major release. The value will not be sent in a request. An _all like field can be achieved using copy_to")]
 	[ReadAs(typeof(AllField))]
 	public interface IAllField : IFieldMapping
 	{
@@ -36,6 +38,7 @@ public interface IAllField : IFieldMapping
 		bool? StoreTermVectors { get; set; }
 	}
 
+	[Obsolete("The _all field is no longer supported in Elasticsearch 7.x and will be removed in the next major release. The value will not be sent in a request. An _all like field can be achieved using copy_to")]
 	public class AllField : IAllField
 	{
 		public string Analyzer { get; set; }
@@ -50,7 +53,7 @@ public class AllField : IAllField
 		public bool? StoreTermVectors { get; set; }
 	}
 
-	//OBSOLETE
+	[Obsolete("The _all field is no longer supported in Elasticsearch 7.x and will be removed in the next major release. The value will not be sent in a request. An _all like field can be achieved using copy_to")]
 	public class AllFieldDescriptor
 		: DescriptorBase<AllFieldDescriptor, IAllField>, IAllField
 	{

src/Nest/Mapping/MetaFields/Index/IndexField.cs

@@ -1,19 +1,23 @@
-using System.Runtime.Serialization;
+using System;
+using System.Runtime.Serialization;
 
 namespace Nest
 {
+	[Obsolete("Configuration for the _index field is no longer supported in Elasticsearch 7.x and will be removed in the next major release.")]
 	[ReadAs(typeof(IndexField))]
 	public interface IIndexField : IFieldMapping
 	{
 		[DataMember(Name ="enabled")]
 		bool? Enabled { get; set; }
 	}
 
+	[Obsolete("Configuration for the _index field is no longer supported in Elasticsearch 7.x and will be removed in the next major release.")]
 	public class IndexField : IIndexField
 	{
 		public bool? Enabled { get; set; }
 	}
 
+	[Obsolete("Configuration for the _index field is no longer supported in Elasticsearch 7.x and will be removed in the next major release.")]
 	public class IndexFieldDescriptor
 		: DescriptorBase<IndexFieldDescriptor, IIndexField>, IIndexField
 	{