[Backport 8.0] Container variant improvements

src/Elastic.Clients.Elasticsearch/FutureGenerated/FutureGenerated.cs

@@ -5,58 +5,16 @@
 using System.Collections.Generic;
 using System.Text.Json.Serialization;
 
-
 namespace Elastic.Clients.Elasticsearch.QueryDsl
 {
-	// TODO - Generate more of these?
+	// TODO - Generate these
 	public partial class TermQuery
 	{
-		public static implicit operator QueryContainer(TermQuery termQuery) => new(termQuery);
+		public static implicit operator QueryContainer(TermQuery termQuery) => QueryContainer.Term(termQuery);
 	}
 
 	public partial class MatchAllQuery
 	{
-		public static implicit operator QueryContainer(MatchAllQuery matchAllQuery) => new(matchAllQuery);
-	}
-
-	public partial class QueryContainer
-	{
-		// TODO - Generate more of these!
-		public TermQuery Term => Variant as TermQuery;
+		public static implicit operator QueryContainer(MatchAllQuery matchAllQuery) => QueryContainer.MatchAll(matchAllQuery);
 	}
 }
-
-namespace Elastic.Clients.Elasticsearch
-{
-	// Stubs until we generate these - Allows the code to compile so we can identify real errors.
-
-	public partial class HttpHeaders : Dictionary<string, Union<string, IReadOnlyCollection<string>>>
-	{
-	}
-
-	public partial class Metadata : Dictionary<string, object>
-	{
-	}
-
-	//public partial class RuntimeFields : Dictionary<Field, RuntimeField>
-	//{
-	//}
-
-	public partial class ApplicationsPrivileges : Dictionary<Name, ResourcePrivileges>
-	{
-	}
-
-	public partial class Privileges : Dictionary<string, bool>
-	{
-	}
-
-	public partial class ResourcePrivileges : Dictionary<Name, Privileges>
-	{
-	}
-
-	// TODO: Implement properly
-	[JsonConverter(typeof(PercentageConverter))]
-	public partial class Percentage
-	{
-	}
-}

src/Elastic.Clients.Elasticsearch/_Generated/Types/Aggregations/AggregationContainer.g.cs

@@ -25,7 +25,7 @@
 namespace Elastic.Clients.Elasticsearch.Aggregations
 {
 	[JsonConverter(typeof(AggregationContainerConverter))]
-	public partial class AggregationContainer : IContainer
+	public partial class AggregationContainer
 	{
 		public AggregationContainer(AggregationBase variant) => Variant = variant ?? throw new ArgumentNullException(nameof(variant));
 		internal AggregationBase Variant { get; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Aggregations/DateHistogramAggregation.g.cs

@@ -300,14 +300,12 @@ public override void Write(Utf8JsonWriter writer, DateHistogramAggregation value
 	}
 
 	[JsonConverter(typeof(DateHistogramAggregationConverter))]
-	public partial class DateHistogramAggregation : BucketAggregationBase, TransformManagement.IPivotGroupByContainerVariant
+	public partial class DateHistogramAggregation : BucketAggregationBase, TransformManagement.IPivotGroupByVariant
 	{
 		public DateHistogramAggregation(string name) : base(name)
 		{
 		}
 
-		[JsonIgnore]
-		string TransformManagement.IPivotGroupByContainerVariant.PivotGroupByContainerVariantName => "date_histogram";
 		[JsonInclude]
 		[JsonPropertyName("calendar_interval")]
 		public Elastic.Clients.Elasticsearch.Aggregations.CalendarInterval? CalendarInterval { get; set; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Aggregations/HistogramAggregation.g.cs

@@ -232,14 +232,12 @@ public override void Write(Utf8JsonWriter writer, HistogramAggregation value, Js
 	}
 
 	[JsonConverter(typeof(HistogramAggregationConverter))]
-	public partial class HistogramAggregation : BucketAggregationBase, TransformManagement.IPivotGroupByContainerVariant
+	public partial class HistogramAggregation : BucketAggregationBase, TransformManagement.IPivotGroupByVariant
 	{
 		public HistogramAggregation(string name) : base(name)
 		{
 		}
 
-		[JsonIgnore]
-		string TransformManagement.IPivotGroupByContainerVariant.PivotGroupByContainerVariantName => "histogram";
 		[JsonInclude]
 		[JsonPropertyName("field")]
 		public Elastic.Clients.Elasticsearch.Field? Field { get; set; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Aggregations/InferenceConfigContainer.g.cs

@@ -24,16 +24,31 @@
 #nullable restore
 namespace Elastic.Clients.Elasticsearch.Aggregations
 {
-	public interface IInferenceConfigContainerVariant
+	public interface IInferenceConfigVariant
 	{
-		string InferenceConfigContainerVariantName { get; }
 	}
 
 	[JsonConverter(typeof(InferenceConfigContainerConverter))]
-	public partial class InferenceConfigContainer : IContainer
+	public partial class InferenceConfigContainer
 	{
-		public InferenceConfigContainer(IInferenceConfigContainerVariant variant) => Variant = variant ?? throw new ArgumentNullException(nameof(variant));
-		internal IInferenceConfigContainerVariant Variant { get; }
+		public InferenceConfigContainer(string variantName, IInferenceConfigVariant variant)
+		{
+			if (variantName is null)
+				throw new ArgumentNullException(nameof(variantName));
+			if (variant is null)
+				throw new ArgumentNullException(nameof(variant));
+			if (string.IsNullOrWhiteSpace(variantName))
+				throw new ArgumentException("Variant name must not be empty or whitespace.");
+			VariantName = variantName;
+			Variant = variant;
+		}
+
+		internal IInferenceConfigVariant Variant { get; }
+
+		internal string VariantName { get; }
+
+		public static InferenceConfigContainer Classification(Elastic.Clients.Elasticsearch.Ml.ClassificationInferenceOptions variant) => new InferenceConfigContainer("classification", variant);
+		public static InferenceConfigContainer Regression(Elastic.Clients.Elasticsearch.Ml.RegressionInferenceOptions variant) => new InferenceConfigContainer("regression", variant);
 	}
 
 	internal sealed class InferenceConfigContainerConverter : JsonConverter<InferenceConfigContainer>
@@ -51,13 +66,13 @@ public override InferenceConfigContainer Read(ref Utf8JsonReader reader, Type ty
 			if (propertyName == "classification")
 			{
 				var variant = JsonSerializer.Deserialize<Elastic.Clients.Elasticsearch.Ml.ClassificationInferenceOptions?>(ref reader, options);
-				return new InferenceConfigContainer(variant);
+				return new InferenceConfigContainer(propertyName, variant);
 			}
 
 			if (propertyName == "regression")
 			{
 				var variant = JsonSerializer.Deserialize<Elastic.Clients.Elasticsearch.Ml.RegressionInferenceOptions?>(ref reader, options);
-				return new InferenceConfigContainer(variant);
+				return new InferenceConfigContainer(propertyName, variant);
 			}
 
 			throw new JsonException();
@@ -66,14 +81,14 @@ public override InferenceConfigContainer Read(ref Utf8JsonReader reader, Type ty
 		public override void Write(Utf8JsonWriter writer, InferenceConfigContainer value, JsonSerializerOptions options)
 		{
 			writer.WriteStartObject();
-			writer.WritePropertyName(value.Variant.InferenceConfigContainerVariantName);
-			switch (value.Variant)
+			writer.WritePropertyName(value.VariantName);
+			switch (value.VariantName)
 			{
-				case Elastic.Clients.Elasticsearch.Ml.ClassificationInferenceOptions variant:
-					JsonSerializer.Serialize(writer, variant, options);
+				case "classification":
+					JsonSerializer.Serialize<Elastic.Clients.Elasticsearch.Ml.ClassificationInferenceOptions>(writer, (Elastic.Clients.Elasticsearch.Ml.ClassificationInferenceOptions)value.Variant, options);
 					break;
-				case Elastic.Clients.Elasticsearch.Ml.RegressionInferenceOptions variant:
-					JsonSerializer.Serialize(writer, variant, options);
+				case "regression":
+					JsonSerializer.Serialize<Elastic.Clients.Elasticsearch.Ml.RegressionInferenceOptions>(writer, (Elastic.Clients.Elasticsearch.Ml.RegressionInferenceOptions)value.Variant, options);
 					break;
 			}
 
@@ -111,11 +126,11 @@ private void Set<T>(Action<T> descriptorAction, string variantName)
 			Descriptor = descriptor;
 		}
 
-		private void Set(IInferenceConfigContainerVariant variant, string variantName)
+		private void Set(IInferenceConfigVariant variant, string variantName)
 		{
 			if (ContainsVariant)
 				throw new Exception("TODO");
-			Container = new InferenceConfigContainer(variant);
+			Container = new InferenceConfigContainer(variantName, variant);
 			ContainedVariantName = variantName;
 			ContainsVariant = true;
 		}
@@ -176,11 +191,11 @@ private void Set<T>(Action<T> descriptorAction, string variantName)
 			Descriptor = descriptor;
 		}
 
-		private void Set(IInferenceConfigContainerVariant variant, string variantName)
+		private void Set(IInferenceConfigVariant variant, string variantName)
 		{
 			if (ContainsVariant)
 				throw new Exception("TODO");
-			Container = new InferenceConfigContainer(variant);
+			Container = new InferenceConfigContainer(variantName, variant);
 			ContainedVariantName = variantName;
 			ContainsVariant = true;
 		}

src/Elastic.Clients.Elasticsearch/_Generated/Types/Aggregations/TermsAggregation.g.cs

@@ -368,14 +368,12 @@ public override void Write(Utf8JsonWriter writer, TermsAggregation value, JsonSe
 	}
 
 	[JsonConverter(typeof(TermsAggregationConverter))]
-	public partial class TermsAggregation : BucketAggregationBase, TransformManagement.IPivotGroupByContainerVariant
+	public partial class TermsAggregation : BucketAggregationBase, TransformManagement.IPivotGroupByVariant
 	{
 		public TermsAggregation(string name) : base(name)
 		{
 		}
 
-		[JsonIgnore]
-		string TransformManagement.IPivotGroupByContainerVariant.PivotGroupByContainerVariantName => "terms";
 		[JsonInclude]
 		[JsonPropertyName("collect_mode")]
 		public Elastic.Clients.Elasticsearch.Aggregations.TermsAggregationCollectMode? CollectMode { get; set; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Ingest/AppendProcessor.g.cs

@@ -24,10 +24,8 @@
 #nullable restore
 namespace Elastic.Clients.Elasticsearch.Ingest
 {
-	public partial class AppendProcessor : ProcessorBase, IProcessorContainerVariant
+	public partial class AppendProcessor : ProcessorBase, IProcessorVariant
 	{
-		[JsonIgnore]
-		string IProcessorContainerVariant.ProcessorContainerVariantName => "append";
 		[JsonInclude]
 		[JsonPropertyName("allow_duplicates")]
 		public bool? AllowDuplicates { get; set; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Ingest/AttachmentProcessor.g.cs

@@ -24,10 +24,8 @@
 #nullable restore
 namespace Elastic.Clients.Elasticsearch.Ingest
 {
-	public partial class AttachmentProcessor : ProcessorBase, IProcessorContainerVariant
+	public partial class AttachmentProcessor : ProcessorBase, IProcessorVariant
 	{
-		[JsonIgnore]
-		string IProcessorContainerVariant.ProcessorContainerVariantName => "attachment";
 		[JsonInclude]
 		[JsonPropertyName("field")]
 		public Elastic.Clients.Elasticsearch.Field Field { get; set; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Ingest/BytesProcessor.g.cs

@@ -24,10 +24,8 @@
 #nullable restore
 namespace Elastic.Clients.Elasticsearch.Ingest
 {
-	public partial class BytesProcessor : ProcessorBase, IProcessorContainerVariant
+	public partial class BytesProcessor : ProcessorBase, IProcessorVariant
 	{
-		[JsonIgnore]
-		string IProcessorContainerVariant.ProcessorContainerVariantName => "bytes";
 		[JsonInclude]
 		[JsonPropertyName("field")]
 		public Elastic.Clients.Elasticsearch.Field Field { get; set; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Ingest/CircleProcessor.g.cs

@@ -24,10 +24,8 @@
 #nullable restore
 namespace Elastic.Clients.Elasticsearch.Ingest
 {
-	public partial class CircleProcessor : ProcessorBase, IProcessorContainerVariant
+	public partial class CircleProcessor : ProcessorBase, IProcessorVariant
 	{
-		[JsonIgnore]
-		string IProcessorContainerVariant.ProcessorContainerVariantName => "circle";
 		[JsonInclude]
 		[JsonPropertyName("error_distance")]
 		public double ErrorDistance { get; set; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Ingest/ConvertProcessor.g.cs

@@ -24,10 +24,8 @@
 #nullable restore
 namespace Elastic.Clients.Elasticsearch.Ingest
 {
-	public partial class ConvertProcessor : ProcessorBase, IProcessorContainerVariant
+	public partial class ConvertProcessor : ProcessorBase, IProcessorVariant
 	{
-		[JsonIgnore]
-		string IProcessorContainerVariant.ProcessorContainerVariantName => "convert";
 		[JsonInclude]
 		[JsonPropertyName("field")]
 		public Elastic.Clients.Elasticsearch.Field Field { get; set; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Ingest/CsvProcessor.g.cs

@@ -24,10 +24,8 @@
 #nullable restore
 namespace Elastic.Clients.Elasticsearch.Ingest
 {
-	public partial class CsvProcessor : ProcessorBase, IProcessorContainerVariant
+	public partial class CsvProcessor : ProcessorBase, IProcessorVariant
 	{
-		[JsonIgnore]
-		string IProcessorContainerVariant.ProcessorContainerVariantName => "csv";
 		[JsonInclude]
 		[JsonPropertyName("description")]
 		public string? Description { get; set; }

src/Elastic.Clients.Elasticsearch/_Generated/Types/Ingest/DateIndexNameProcessor.g.cs

@@ -24,10 +24,8 @@
 #nullable restore
 namespace Elastic.Clients.Elasticsearch.Ingest
 {
-	public partial class DateIndexNameProcessor : ProcessorBase, IProcessorContainerVariant
+	public partial class DateIndexNameProcessor : ProcessorBase, IProcessorVariant
 	{
-		[JsonIgnore]
-		string IProcessorContainerVariant.ProcessorContainerVariantName => "date_index_name";
 		[JsonInclude]
 		[JsonPropertyName("date_formats")]
 		public IEnumerable<string> DateFormats { get; set; }