Add support for delete vector index operation

src/Weaviate.Client.Tests/Integration/TestCollectionVectorIndex.cs

@@ -0,0 +1,33 @@
+namespace Weaviate.Client.Tests.Integration;
+
+/// <summary>
+/// Integration tests for deleting vector indices via
+/// DELETE /schema/{className}/vectors/{vectorIndexName}/index
+/// </summary>
+[Collection("TestCollectionVectorIndex")]
+public class TestCollectionVectorIndex : IntegrationTests
+{
+    /// <summary>
+    /// DeleteVectorIndex drops the vector index for a named vector on a 1.37+ server.
+    /// </summary>
+    [Fact]
+    public async Task DeleteVectorIndex_DropsVectorIndex()
+    {
+        RequireVersion<CollectionConfigClient>(
+            nameof(CollectionConfigClient.DeleteVectorIndex)
+        );
+
+        var collection = await CollectionFactory(
+            vectorConfig:
+            [
+                Configure.Vector("myVector", v => v.SelfProvided()),
+            ]
+        );
+
+        // Should not throw on a 1.37+ server
+        await collection.Config.DeleteVectorIndex(
+            "myVector",
+            TestContext.Current.CancellationToken
+        );
+    }
+}

src/Weaviate.Client.Tests/Unit/TestCollectionVectorIndex.cs

@@ -0,0 +1,72 @@
+using Weaviate.Client.Tests.Unit.Mocks;
+
+namespace Weaviate.Client.Tests.Unit;
+
+/// <summary>
+/// Tests for deleting vector indices via
+/// DELETE /schema/{className}/vectors/{vectorIndexName}/index
+/// </summary>
+public class CollectionVectorIndexTests
+{
+    /// <summary>
+    /// DeleteVectorIndex throws WeaviateVersionMismatchException when server version is below 1.37
+    /// </summary>
+    [Fact]
+    public async Task DeleteVectorIndex_OnServerBelow1_37_ThrowsVersionMismatchException()
+    {
+        var (client, _) = MockWeaviateClient.CreateWithMockHandler(serverVersion: "1.36.0");
+
+        await Assert.ThrowsAsync<WeaviateVersionMismatchException>(() =>
+            client
+                .Collections.Use("Article")
+                .Config.DeleteVectorIndex(
+                    "myVector",
+                    TestContext.Current.CancellationToken
+                )
+        );
+    }
+
+    /// <summary>
+    /// DeleteVectorIndex sends a DELETE to the correct endpoint path for a named vector
+    /// </summary>
+    [Fact]
+    public async Task DeleteVectorIndex_SendsDeleteToCorrectPath()
+    {
+        var (client, handler) = MockWeaviateClient.CreateWithMockHandler();
+        handler.AddResponse(MockResponses.Ok());
+
+        await client
+            .Collections.Use("Article")
+            .Config.DeleteVectorIndex(
+                "myVector",
+                TestContext.Current.CancellationToken
+            );
+
+        Assert.NotNull(handler.LastRequest);
+        handler
+            .LastRequest!.ShouldHaveMethod(HttpMethod.Delete)
+            .ShouldHavePath("/v1/schema/Article/vectors/myVector/index");
+    }
+
+    /// <summary>
+    /// DeleteVectorIndex sends a DELETE to the correct endpoint path for the default vector
+    /// </summary>
+    [Fact]
+    public async Task DeleteVectorIndex_DefaultVector_SendsDeleteToCorrectPath()
+    {
+        var (client, handler) = MockWeaviateClient.CreateWithMockHandler();
+        handler.AddResponse(MockResponses.Ok());
+
+        await client
+            .Collections.Use("Article")
+            .Config.DeleteVectorIndex(
+                "default",
+                TestContext.Current.CancellationToken
+            );
+
+        Assert.NotNull(handler.LastRequest);
+        handler
+            .LastRequest!.ShouldHaveMethod(HttpMethod.Delete)
+            .ShouldHavePath("/v1/schema/Article/vectors/default/index");
+    }
+}

src/Weaviate.Client/CollectionConfigClient.cs

@@ -108,6 +108,30 @@ await _client.RestClient.CollectionDeletePropertyIndex(
         );
     }
 
+    /// <summary>
+    /// Deletes the vector index for a named vector in this collection.
+    /// Requires Weaviate server version 1.37.0 or later.
+    /// </summary>
+    /// <param name="vectorName">The name of the vector whose index should be deleted.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <exception cref="WeaviateVersionMismatchException">
+    /// Thrown when the connected server version is below 1.37.0.
+    /// </exception>
+    [RequiresWeaviateVersion(1, 37, 0)]
+    public async Task DeleteVectorIndex(
+        string vectorName,
+        CancellationToken cancellationToken = default
+    )
+    {
+        await _client.EnsureVersion<CollectionConfigClient>();
+
+        await _client.RestClient.CollectionDeleteVectorIndex(
+            _collectionName,
+            vectorName,
+            cancellationToken
+        );
+    }
+
     // Add new named vectors
     /// <summary>
     /// Adds a new named vector to the collection.

src/Weaviate.Client/PublicAPI.Unshipped.txt

@@ -2836,6 +2836,7 @@ Weaviate.Client.CollectionConfigClient.AddProperty(Weaviate.Client.Models.Proper
 Weaviate.Client.CollectionConfigClient.AddReference(Weaviate.Client.Models.Reference! referenceProperty, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task!
 Weaviate.Client.CollectionConfigClient.AddVector(Weaviate.Client.Models.VectorConfig! vector, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task!
 Weaviate.Client.CollectionConfigClient.DeletePropertyIndex(string! propertyName, Weaviate.Client.Models.PropertyIndexType indexType, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task!
+Weaviate.Client.CollectionConfigClient.DeleteVectorIndex(string! vectorName, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task!
 Weaviate.Client.CollectionConfigClient.Get(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<Weaviate.Client.Models.CollectionConfigExport!>!
 Weaviate.Client.CollectionConfigClient.GetCachedConfig(Weaviate.Client.Cache.SchemaCache? schemaCache = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<Weaviate.Client.Models.CollectionConfig?>!
 Weaviate.Client.CollectionConfigClient.GetShard(string! shardName, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) -> System.Threading.Tasks.Task<Weaviate.Client.Models.ShardInfo?>!

src/Weaviate.Client/Rest/Collection.cs

@@ -276,6 +276,32 @@ await response.ManageStatusCode(
         );
     }
 
+    /// <summary>
+    /// Deletes the vector index for a named vector in a collection.
+    /// </summary>
+    /// <param name="collectionName">The collection name</param>
+    /// <param name="vectorIndexName">The vector index name</param>
+    /// <param name="cancellationToken">The cancellation token</param>
+    internal async Task CollectionDeleteVectorIndex(
+        string collectionName,
+        string vectorIndexName,
+        CancellationToken cancellationToken = default
+    )
+    {
+        var path = WeaviateEndpoints.CollectionVectorIndex(
+            collectionName,
+            vectorIndexName
+        );
+
+        var response = await _httpClient.DeleteAsync(path, cancellationToken);
+
+        await response.ManageStatusCode(
+            [HttpStatusCode.OK],
+            "collection vector index delete",
+            ResourceType.Collection
+        );
+    }
+
     /// <summary>
     /// Collections the exists using the specified collection name
     /// </summary>

src/Weaviate.Client/Rest/Dto/Models.g.cs

@@ -672,6 +672,14 @@ internal partial record ExportStatusResponse
 
         public System.DateTimeOffset? StartedAt { get; set; } = default!;
 
+        /// <summary>
+        /// When the export completed (successfully, with failure, or was canceled)
+        /// </summary>
+
+        [System.Text.Json.Serialization.JsonPropertyName("completedAt")]
+
+        public System.DateTimeOffset? CompletedAt { get; set; } = default!;
+
         /// <summary>
         /// Duration of the export in milliseconds
         /// </summary>
@@ -3046,6 +3054,78 @@ internal partial record DistributedTask
 
         public System.Collections.Generic.IDictionary<string, object>? Payload { get; set; } = default!;
 
+        /// <summary>
+        /// Units of the task. Only present for tasks that use unit tracking.
+        /// </summary>
+
+        [System.Text.Json.Serialization.JsonPropertyName("units")]
+
+        public System.Collections.Generic.IList<DistributedTaskUnit>? Units { get; set; } = default!;
+
+    }
+
+    /// <summary>
+    /// A unit of a distributed task.
+    /// </summary>
+    [System.CodeDom.Compiler.GeneratedCode("NJsonSchema", "14.6.1.0 (NJsonSchema v11.5.1.0 (Newtonsoft.Json v13.0.0.0))")]
+    internal partial record DistributedTaskUnit
+    {
+        /// <summary>
+        /// The ID of the unit.
+        /// </summary>
+
+        [System.Text.Json.Serialization.JsonPropertyName("id")]
+
+        public string? Id { get; set; } = default!;
+
+        /// <summary>
+        /// The node that owns this unit.
+        /// </summary>
+
+        [System.Text.Json.Serialization.JsonPropertyName("nodeId")]
+
+        public string? NodeId { get; set; } = default!;
+
+        /// <summary>
+        /// The status of the unit.
+        /// </summary>
+
+        [System.Text.Json.Serialization.JsonPropertyName("status")]
+
+        public string? Status { get; set; } = default!;
+
+        /// <summary>
+        /// The progress of the unit (0.0 to 1.0).
+        /// </summary>
+
+        [System.Text.Json.Serialization.JsonPropertyName("progress")]
+
+        public float? Progress { get; set; } = default!;
+
+        /// <summary>
+        /// The error message if the unit failed.
+        /// </summary>
+
+        [System.Text.Json.Serialization.JsonPropertyName("error")]
+
+        public string? Error { get; set; } = default!;
+
+        /// <summary>
+        /// The time when the unit was last updated.
+        /// </summary>
+
+        [System.Text.Json.Serialization.JsonPropertyName("updatedAt")]
+
+        public System.DateTimeOffset? UpdatedAt { get; set; } = default!;
+
+        /// <summary>
+        /// The time when the unit finished.
+        /// </summary>
+
+        [System.Text.Json.Serialization.JsonPropertyName("finishedAt")]
+
+        public System.DateTimeOffset? FinishedAt { get; set; } = default!;
+
     }
 
     /// <summary>
@@ -4823,32 +4903,23 @@ internal enum ExportStatusResponseStatus
         [System.Text.Json.Serialization.JsonStringEnumMemberName(@"CANCELED")]
         CANCELED = 4,
 
-        [System.Text.Json.Serialization.JsonStringEnumMemberName(@"SKIPPED")]
-        SKIPPED = 5,
-
     }
 
     [System.CodeDom.Compiler.GeneratedCode("NJsonSchema", "14.6.1.0 (NJsonSchema v11.5.1.0 (Newtonsoft.Json v13.0.0.0))")]
     internal enum ShardProgressStatus
     {
 
-        [System.Text.Json.Serialization.JsonStringEnumMemberName(@"STARTED")]
-        STARTED = 0,
-
         [System.Text.Json.Serialization.JsonStringEnumMemberName(@"TRANSFERRING")]
-        TRANSFERRING = 1,
+        TRANSFERRING = 0,
 
         [System.Text.Json.Serialization.JsonStringEnumMemberName(@"SUCCESS")]
-        SUCCESS = 2,
+        SUCCESS = 1,
 
         [System.Text.Json.Serialization.JsonStringEnumMemberName(@"FAILED")]
-        FAILED = 3,
-
-        [System.Text.Json.Serialization.JsonStringEnumMemberName(@"CANCELED")]
-        CANCELED = 4,
+        FAILED = 2,
 
         [System.Text.Json.Serialization.JsonStringEnumMemberName(@"SKIPPED")]
-        SKIPPED = 5,
+        SKIPPED = 3,
 
     }
 

src/Weaviate.Client/Rest/Endpoints.cs

@@ -81,6 +81,17 @@ internal static string CollectionPropertyIndex(
         string indexName
     ) => $"schema/{className}/properties/{propertyName}/index/{indexName}";
 
+    /// <summary>
+    /// Path for deleting the vector index of a named vector in a collection.
+    /// </summary>
+    /// <param name="className">The class name</param>
+    /// <param name="vectorIndexName">The vector index name</param>
+    /// <returns>The string</returns>
+    internal static string CollectionVectorIndex(
+        string className,
+        string vectorIndexName
+    ) => $"schema/{className}/vectors/{vectorIndexName}/index";
+
     /// <summary>
     /// Collections the shard using the specified class name
     /// </summary>