Fix BucketsPath (de-)serialization (#8164)

Author: flobernd

Diff for: src/Elastic.Clients.Elasticsearch.Serverless/_Generated/Types/Aggregations/BucketsPath.g.cs

@@ -1,34 +1,26 @@
 // Licensed to Elasticsearch B.V under one or more agreements.
 // Elasticsearch B.V licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information.
-//
-// ███╗   ██╗ ██████╗ ████████╗██╗ ██████╗███████╗
-// ████╗  ██║██╔═══██╗╚══██╔══╝██║██╔════╝██╔════╝
-// ██╔██╗ ██║██║   ██║   ██║   ██║██║     █████╗
-// ██║╚██╗██║██║   ██║   ██║   ██║██║     ██╔══╝
-// ██║ ╚████║╚██████╔╝   ██║   ██║╚██████╗███████╗
-// ╚═╝  ╚═══╝ ╚═════╝    ╚═╝   ╚═╝ ╚═════╝╚══════╝
-// ------------------------------------------------
-//
-// This file is automatically generated.
-// Please do not edit these files manually.
-//
-// ------------------------------------------------
-
-#nullable restore
 
+#nullable enable
+
+#if ELASTICSEARCH_SERVERLESS
+using Elastic.Clients.Elasticsearch.Serverless.Core;
+#else
 using Elastic.Clients.Elasticsearch.Core;
-using Elastic.Clients.Elasticsearch.Fluent;
-using Elastic.Clients.Elasticsearch.Serialization;
-using Elastic.Transport;
+#endif
+
 using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
-using System.Linq.Expressions;
 using System.Text.Json;
 using System.Text.Json.Serialization;
 
+#if ELASTICSEARCH_SERVERLESS
+namespace Elastic.Clients.Elasticsearch.Serverless.Aggregations;
+#else
 namespace Elastic.Clients.Elasticsearch.Aggregations;
+#endif
 
 /// <summary>
 /// <para>Buckets path can be expressed in different ways, and an aggregation may accept some or all of these<br/>forms depending on its type. Please refer to each aggregation's documentation to know what buckets<br/>path forms they accept.</para>
@@ -43,8 +35,8 @@ public enum Kind
 		Dictionary
 	}
 
-	private readonly Kind _kind;
-	private readonly object _value;
+	internal readonly Kind _kind;
+	internal readonly object _value;
 
 	Kind IComplexUnion<Kind>.ValueKind => _kind;
 
@@ -111,12 +103,36 @@ public bool TryGetDictionary([NotNullWhen(true)] out Dictionary<string, string>?
 	public static implicit operator BucketsPath(Dictionary<string, string> dictionary) => BucketsPath.Dictionary(dictionary);
 }
 
-internal sealed class BucketsPathConverter : MultiItemUnionConverter<BucketsPath, BucketsPath.Kind>
+internal sealed class BucketsPathConverter : JsonConverter<BucketsPath>
 {
-	public BucketsPathConverter()
+	public override BucketsPath? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) =>
+		(reader.TokenType) switch
+		{
+			JsonTokenType.Null => null,
+			JsonTokenType.String => BucketsPath.Single(JsonSerializer.Deserialize<string>(ref reader, options)!),
+			JsonTokenType.StartArray => BucketsPath.Array(JsonSerializer.Deserialize<string[]>(ref reader, options)!),
+			JsonTokenType.StartObject => BucketsPath.Dictionary(JsonSerializer.Deserialize<Dictionary<string, string>>(ref reader, options)!),
+			_ => throw new JsonException($"Unexpected token '{reader.TokenType}'.")
+		};
+
+	public override void Write(Utf8JsonWriter writer, BucketsPath value, JsonSerializerOptions options)
 	{
-		_types = new Dictionary<BucketsPath.Kind, Type> { { BucketsPath.Kind.Single, typeof(string) }, { BucketsPath.Kind.Array, typeof(IReadOnlyCollection<string>) }, { BucketsPath.Kind.Dictionary, typeof(IReadOnlyDictionary<string, string>) } };
-		_factories = new Dictionary<Type, Func<object, BucketsPath>> { { typeof(string), o => BucketsPath.Single((string)o) }, { typeof(string[]), o => BucketsPath.Array((string[])o) }, { typeof(Dictionary<string, string>), o => BucketsPath.Dictionary((Dictionary<string, string>)o) } };
-		_uniquePropertyToType = new Dictionary<string, Type> { { "", typeof(string) }, { "", typeof(IReadOnlyCollection<string>) }, { "", typeof(IReadOnlyDictionary<string, string>) } };
+		switch (value._kind)
+		{
+			case BucketsPath.Kind.Single:
+				writer.WriteStringValue((string)value._value);
+				break;
+
+			case BucketsPath.Kind.Array:
+				JsonSerializer.Serialize(writer, (string[])value._value, options);
+				break;
+
+			case BucketsPath.Kind.Dictionary:
+				JsonSerializer.Serialize(writer, (Dictionary<string, string>)value._value, options);
+				break;
+
+			default:
+				throw new ArgumentOutOfRangeException();
+		}
 	}
-}
+}