Add [DisallowNull] on TId in pipeline parameters

src/Examples/DapperExample/Repositories/DapperRepository.cs

@@ -1,4 +1,5 @@
 using System.Data.Common;
+using System.Diagnostics.CodeAnalysis;
 using Dapper;
 using DapperExample.AtomicOperations;
 using DapperExample.TranslationToSql;
@@ -177,7 +178,7 @@ public async Task<int> CountAsync(FilterExpression? filter, CancellationToken ca
     }
 
     /// <inheritdoc />
-    public Task<TResource> GetForCreateAsync(Type resourceClrType, TId id, CancellationToken cancellationToken)
+    public Task<TResource> GetForCreateAsync(Type resourceClrType, [DisallowNull] TId id, CancellationToken cancellationToken)
     {
         ArgumentGuard.NotNull(resourceClrType);
 
@@ -355,7 +356,7 @@ await ExecuteInTransactionAsync(async transaction =>
     }
 
     /// <inheritdoc />
-    public async Task DeleteAsync(TResource? resourceFromDatabase, TId id, CancellationToken cancellationToken)
+    public async Task DeleteAsync(TResource? resourceFromDatabase, [DisallowNull] TId id, CancellationToken cancellationToken)
     {
         TResource placeholderResource = resourceFromDatabase ?? _resourceFactory.CreateInstance<TResource>();
         placeholderResource.Id = id;
@@ -451,7 +452,7 @@ await ExecuteInTransactionAsync(async transaction =>
     }
 
     /// <inheritdoc />
-    public async Task AddToToManyRelationshipAsync(TResource? leftResource, TId leftId, ISet<IIdentifiable> rightResourceIds,
+    public async Task AddToToManyRelationshipAsync(TResource? leftResource, [DisallowNull] TId leftId, ISet<IIdentifiable> rightResourceIds,
         CancellationToken cancellationToken)
     {
         ArgumentGuard.NotNull(rightResourceIds);

src/Examples/NoEntityFrameworkExample/Services/InMemoryResourceService.cs

@@ -1,4 +1,5 @@
 using System.Collections;
+using System.Diagnostics.CodeAnalysis;
 using JsonApiDotNetCore.Configuration;
 using JsonApiDotNetCore.Errors;
 using JsonApiDotNetCore.Queries;
@@ -114,7 +115,7 @@ private bool SetPrimaryTotalCountIsZero()
     }
 
     /// <inheritdoc />
-    public Task<TResource> GetAsync(TId id, CancellationToken cancellationToken)
+    public Task<TResource> GetAsync([DisallowNull] TId id, CancellationToken cancellationToken)
     {
         QueryLayer queryLayer = _queryLayerComposer.ComposeForGetById(id, _resourceType, TopFieldSelection.PreserveExisting);
 
@@ -124,14 +125,14 @@ public Task<TResource> GetAsync(TId id, CancellationToken cancellationToken)
 
         if (resource == null)
         {
-            throw new ResourceNotFoundException(id!.ToString()!, _resourceType.PublicName);
+            throw new ResourceNotFoundException(id.ToString()!, _resourceType.PublicName);
         }
 
         return Task.FromResult(resource);
     }
 
     /// <inheritdoc />
-    public Task<object?> GetSecondaryAsync(TId id, string relationshipName, CancellationToken cancellationToken)
+    public Task<object?> GetSecondaryAsync([DisallowNull] TId id, string relationshipName, CancellationToken cancellationToken)
     {
         RelationshipAttribute? relationship = _resourceType.FindRelationshipByPublicName(relationshipName);
 
@@ -151,7 +152,7 @@ public Task<TResource> GetAsync(TId id, CancellationToken cancellationToken)
 
         if (primaryResource == null)
         {
-            throw new ResourceNotFoundException(id!.ToString()!, _resourceType.PublicName);
+            throw new ResourceNotFoundException(id.ToString()!, _resourceType.PublicName);
         }
 
         object? rightValue = relationship.GetValue(primaryResource);
@@ -164,7 +165,7 @@ public Task<TResource> GetAsync(TId id, CancellationToken cancellationToken)
         return Task.FromResult(rightValue);
     }
 
-    private void SetNonPrimaryTotalCount(TId id, RelationshipAttribute relationship)
+    private void SetNonPrimaryTotalCount([DisallowNull] TId id, RelationshipAttribute relationship)
     {
         if (_options.IncludeTotalResourceCount && relationship is HasManyAttribute hasManyRelationship)
         {
@@ -188,7 +189,7 @@ private void SetNonPrimaryTotalCount(TId id, RelationshipAttribute relationship)
     }
 
     /// <inheritdoc />
-    public Task<object?> GetRelationshipAsync(TId id, string relationshipName, CancellationToken cancellationToken)
+    public Task<object?> GetRelationshipAsync([DisallowNull] TId id, string relationshipName, CancellationToken cancellationToken)
     {
         return GetSecondaryAsync(id, relationshipName, cancellationToken);
     }

src/JsonApiDotNetCore/AtomicOperations/Processors/AddToRelationshipProcessor.cs

@@ -26,7 +26,7 @@ public AddToRelationshipProcessor(IAddToRelationshipService<TResource, TId> serv
         var leftId = (TId)operation.Resource.GetTypedId();
         ISet<IIdentifiable> rightResourceIds = operation.GetSecondaryResources();
 
-        await _service.AddToToManyRelationshipAsync(leftId, operation.Request.Relationship!.PublicName, rightResourceIds, cancellationToken);
+        await _service.AddToToManyRelationshipAsync(leftId!, operation.Request.Relationship!.PublicName, rightResourceIds, cancellationToken);
 
         return null;
     }

src/JsonApiDotNetCore/AtomicOperations/Processors/DeleteProcessor.cs

@@ -24,7 +24,7 @@ public DeleteProcessor(IDeleteService<TResource, TId> service)
         ArgumentGuard.NotNull(operation);
 
         var id = (TId)operation.Resource.GetTypedId();
-        await _service.DeleteAsync(id, cancellationToken);
+        await _service.DeleteAsync(id!, cancellationToken);
 
         return null;
     }

src/JsonApiDotNetCore/AtomicOperations/Processors/RemoveFromRelationshipProcessor.cs

@@ -26,7 +26,7 @@ public RemoveFromRelationshipProcessor(IRemoveFromRelationshipService<TResource,
         var leftId = (TId)operation.Resource.GetTypedId();
         ISet<IIdentifiable> rightResourceIds = operation.GetSecondaryResources();
 
-        await _service.RemoveFromToManyRelationshipAsync(leftId, operation.Request.Relationship!.PublicName, rightResourceIds, cancellationToken);
+        await _service.RemoveFromToManyRelationshipAsync(leftId!, operation.Request.Relationship!.PublicName, rightResourceIds, cancellationToken);
 
         return null;
     }

src/JsonApiDotNetCore/AtomicOperations/Processors/SetRelationshipProcessor.cs

@@ -28,7 +28,7 @@ public SetRelationshipProcessor(ISetRelationshipService<TResource, TId> service)
         var leftId = (TId)operation.Resource.GetTypedId();
         object? rightValue = GetRelationshipRightValue(operation);
 
-        await _service.SetRelationshipAsync(leftId, operation.Request.Relationship!.PublicName, rightValue, cancellationToken);
+        await _service.SetRelationshipAsync(leftId!, operation.Request.Relationship!.PublicName, rightValue, cancellationToken);
 
         return null;
     }

src/JsonApiDotNetCore/AtomicOperations/Processors/UpdateProcessor.cs

@@ -24,7 +24,7 @@ public UpdateProcessor(IUpdateService<TResource, TId> service)
         ArgumentGuard.NotNull(operation);
 
         var resource = (TResource)operation.Resource;
-        TResource? updated = await _service.UpdateAsync(resource.Id, resource, cancellationToken);
+        TResource? updated = await _service.UpdateAsync(resource.Id!, resource, cancellationToken);
 
         return updated == null ? null : operation.WithResource(updated);
     }

src/JsonApiDotNetCore/Controllers/BaseJsonApiController.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using JsonApiDotNetCore.Configuration;
 using JsonApiDotNetCore.Errors;
 using JsonApiDotNetCore.Middleware;
@@ -108,7 +109,7 @@ public virtual async Task<IActionResult> GetAsync(CancellationToken cancellation
     /// GET /articles/1 HTTP/1.1
     /// ]]></code>
     /// </summary>
-    public virtual async Task<IActionResult> GetAsync(TId id, CancellationToken cancellationToken)
+    public virtual async Task<IActionResult> GetAsync([DisallowNull] TId id, CancellationToken cancellationToken)
     {
         _traceWriter.LogMethodStart(new
         {
@@ -133,7 +134,7 @@ public virtual async Task<IActionResult> GetAsync(TId id, CancellationToken canc
     /// GET /articles/1/revisions HTTP/1.1
     /// ]]></code>
     /// </summary>
-    public virtual async Task<IActionResult> GetSecondaryAsync(TId id, string relationshipName, CancellationToken cancellationToken)
+    public virtual async Task<IActionResult> GetSecondaryAsync([DisallowNull] TId id, string relationshipName, CancellationToken cancellationToken)
     {
         _traceWriter.LogMethodStart(new
         {
@@ -162,7 +163,7 @@ public virtual async Task<IActionResult> GetSecondaryAsync(TId id, string relati
     /// GET /articles/1/relationships/revisions HTTP/1.1
     /// ]]></code>
     /// </summary>
-    public virtual async Task<IActionResult> GetRelationshipAsync(TId id, string relationshipName, CancellationToken cancellationToken)
+    public virtual async Task<IActionResult> GetRelationshipAsync([DisallowNull] TId id, string relationshipName, CancellationToken cancellationToken)
     {
         _traceWriter.LogMethodStart(new
         {
@@ -246,8 +247,8 @@ private string GetLocationUrl(string resourceId)
     /// <param name="cancellationToken">
     /// Propagates notification that request handling should be canceled.
     /// </param>
-    public virtual async Task<IActionResult> PostRelationshipAsync(TId id, string relationshipName, [FromBody] ISet<IIdentifiable> rightResourceIds,
-        CancellationToken cancellationToken)
+    public virtual async Task<IActionResult> PostRelationshipAsync([DisallowNull] TId id, string relationshipName,
+        [FromBody] ISet<IIdentifiable> rightResourceIds, CancellationToken cancellationToken)
     {
         _traceWriter.LogMethodStart(new
         {
@@ -275,7 +276,7 @@ public virtual async Task<IActionResult> PostRelationshipAsync(TId id, string re
     /// PATCH /articles/1 HTTP/1.1
     /// ]]></code>
     /// </summary>
-    public virtual async Task<IActionResult> PatchAsync(TId id, [FromBody] TResource resource, CancellationToken cancellationToken)
+    public virtual async Task<IActionResult> PatchAsync([DisallowNull] TId id, [FromBody] TResource resource, CancellationToken cancellationToken)
     {
         _traceWriter.LogMethodStart(new
         {
@@ -321,7 +322,7 @@ public virtual async Task<IActionResult> PatchAsync(TId id, [FromBody] TResource
     /// <param name="cancellationToken">
     /// Propagates notification that request handling should be canceled.
     /// </param>
-    public virtual async Task<IActionResult> PatchRelationshipAsync(TId id, string relationshipName, [FromBody] object? rightValue,
+    public virtual async Task<IActionResult> PatchRelationshipAsync([DisallowNull] TId id, string relationshipName, [FromBody] object? rightValue,
         CancellationToken cancellationToken)
     {
         _traceWriter.LogMethodStart(new
@@ -348,7 +349,7 @@ public virtual async Task<IActionResult> PatchRelationshipAsync(TId id, string r
     /// DELETE /articles/1 HTTP/1.1
     /// ]]></code>
     /// </summary>
-    public virtual async Task<IActionResult> DeleteAsync(TId id, CancellationToken cancellationToken)
+    public virtual async Task<IActionResult> DeleteAsync([DisallowNull] TId id, CancellationToken cancellationToken)
     {
         _traceWriter.LogMethodStart(new
         {
@@ -382,8 +383,8 @@ public virtual async Task<IActionResult> DeleteAsync(TId id, CancellationToken c
     /// <param name="cancellationToken">
     /// Propagates notification that request handling should be canceled.
     /// </param>
-    public virtual async Task<IActionResult> DeleteRelationshipAsync(TId id, string relationshipName, [FromBody] ISet<IIdentifiable> rightResourceIds,
-        CancellationToken cancellationToken)
+    public virtual async Task<IActionResult> DeleteRelationshipAsync([DisallowNull] TId id, string relationshipName,
+        [FromBody] ISet<IIdentifiable> rightResourceIds, CancellationToken cancellationToken)
     {
         _traceWriter.LogMethodStart(new
         {

src/JsonApiDotNetCore/Controllers/JsonApiController.cs

@@ -1,4 +1,5 @@
 using System.ComponentModel.DataAnnotations;
+using System.Diagnostics.CodeAnalysis;
 using JsonApiDotNetCore.Configuration;
 using JsonApiDotNetCore.Resources;
 using JsonApiDotNetCore.Services;
@@ -50,23 +51,25 @@ public override async Task<IActionResult> GetAsync(CancellationToken cancellatio
     /// <inheritdoc />
     [HttpGet("{id}")]
     [HttpHead("{id}")]
-    public override async Task<IActionResult> GetAsync([Required] TId id, CancellationToken cancellationToken)
+    public override async Task<IActionResult> GetAsync([Required] [DisallowNull] TId id, CancellationToken cancellationToken)
     {
         return await base.GetAsync(id, cancellationToken);
     }
 
     /// <inheritdoc />
     [HttpGet("{id}/{relationshipName}")]
     [HttpHead("{id}/{relationshipName}")]
-    public override async Task<IActionResult> GetSecondaryAsync([Required] TId id, [Required] string relationshipName, CancellationToken cancellationToken)
+    public override async Task<IActionResult> GetSecondaryAsync([Required] [DisallowNull] TId id, [Required] string relationshipName,
+        CancellationToken cancellationToken)
     {
         return await base.GetSecondaryAsync(id, relationshipName, cancellationToken);
     }
 
     /// <inheritdoc />
     [HttpGet("{id}/relationships/{relationshipName}")]
     [HttpHead("{id}/relationships/{relationshipName}")]
-    public override async Task<IActionResult> GetRelationshipAsync([Required] TId id, [Required] string relationshipName, CancellationToken cancellationToken)
+    public override async Task<IActionResult> GetRelationshipAsync([Required] [DisallowNull] TId id, [Required] string relationshipName,
+        CancellationToken cancellationToken)
     {
         return await base.GetRelationshipAsync(id, relationshipName, cancellationToken);
     }
@@ -80,38 +83,38 @@ public override async Task<IActionResult> PostAsync([Required] TResource resourc
 
     /// <inheritdoc />
     [HttpPost("{id}/relationships/{relationshipName}")]
-    public override async Task<IActionResult> PostRelationshipAsync([Required] TId id, [Required] string relationshipName,
+    public override async Task<IActionResult> PostRelationshipAsync([Required] [DisallowNull] TId id, [Required] string relationshipName,
         [Required] ISet<IIdentifiable> rightResourceIds, CancellationToken cancellationToken)
     {
         return await base.PostRelationshipAsync(id, relationshipName, rightResourceIds, cancellationToken);
     }
 
     /// <inheritdoc />
     [HttpPatch("{id}")]
-    public override async Task<IActionResult> PatchAsync([Required] TId id, [Required] TResource resource, CancellationToken cancellationToken)
+    public override async Task<IActionResult> PatchAsync([Required] [DisallowNull] TId id, [Required] TResource resource, CancellationToken cancellationToken)
     {
         return await base.PatchAsync(id, resource, cancellationToken);
     }
 
     /// <inheritdoc />
     [HttpPatch("{id}/relationships/{relationshipName}")]
     // Parameter `[Required] object? rightValue` makes Swashbuckle generate the OpenAPI request body as required. We don't actually validate ModelState, so it doesn't hurt.
-    public override async Task<IActionResult> PatchRelationshipAsync([Required] TId id, [Required] string relationshipName, [Required] object? rightValue,
-        CancellationToken cancellationToken)
+    public override async Task<IActionResult> PatchRelationshipAsync([Required] [DisallowNull] TId id, [Required] string relationshipName,
+        [Required] object? rightValue, CancellationToken cancellationToken)
     {
         return await base.PatchRelationshipAsync(id, relationshipName, rightValue, cancellationToken);
     }
 
     /// <inheritdoc />
     [HttpDelete("{id}")]
-    public override async Task<IActionResult> DeleteAsync([Required] TId id, CancellationToken cancellationToken)
+    public override async Task<IActionResult> DeleteAsync([Required] [DisallowNull] TId id, CancellationToken cancellationToken)
     {
         return await base.DeleteAsync(id, cancellationToken);
     }
 
     /// <inheritdoc />
     [HttpDelete("{id}/relationships/{relationshipName}")]
-    public override async Task<IActionResult> DeleteRelationshipAsync([Required] TId id, [Required] string relationshipName,
+    public override async Task<IActionResult> DeleteRelationshipAsync([Required] [DisallowNull] TId id, [Required] string relationshipName,
         [Required] ISet<IIdentifiable> rightResourceIds, CancellationToken cancellationToken)
     {
         return await base.DeleteRelationshipAsync(id, relationshipName, rightResourceIds, cancellationToken);

src/JsonApiDotNetCore/Queries/IQueryLayerComposer.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics.CodeAnalysis;
 using JsonApiDotNetCore.Configuration;
 using JsonApiDotNetCore.Queries.Expressions;
 using JsonApiDotNetCore.Resources;
@@ -18,7 +19,7 @@ public interface IQueryLayerComposer
     /// <summary>
     /// Builds a filter from constraints, used to determine total resource count on a secondary collection endpoint.
     /// </summary>
-    FilterExpression? GetSecondaryFilterFromConstraints<TId>(TId primaryId, HasManyAttribute hasManyRelationship);
+    FilterExpression? GetSecondaryFilterFromConstraints<TId>([DisallowNull] TId primaryId, HasManyAttribute hasManyRelationship);
 
     /// <summary>
     /// Collects constraints and builds a <see cref="QueryLayer" /> out of them, used to retrieve the actual resources.
@@ -28,7 +29,7 @@ public interface IQueryLayerComposer
     /// <summary>
     /// Collects constraints and builds a <see cref="QueryLayer" /> out of them, used to retrieve one resource.
     /// </summary>
-    QueryLayer ComposeForGetById<TId>(TId id, ResourceType primaryResourceType, TopFieldSelection fieldSelection);
+    QueryLayer ComposeForGetById<TId>([DisallowNull] TId id, ResourceType primaryResourceType, TopFieldSelection fieldSelection);
 
     /// <summary>
     /// Collects constraints and builds the secondary layer for a relationship endpoint.
@@ -38,14 +39,14 @@ public interface IQueryLayerComposer
     /// <summary>
     /// Wraps a layer for a secondary endpoint into a primary layer, rewriting top-level includes.
     /// </summary>
-    QueryLayer WrapLayerForSecondaryEndpoint<TId>(QueryLayer secondaryLayer, ResourceType primaryResourceType, TId primaryId,
+    QueryLayer WrapLayerForSecondaryEndpoint<TId>(QueryLayer secondaryLayer, ResourceType primaryResourceType, [DisallowNull] TId primaryId,
         RelationshipAttribute relationship);
 
     /// <summary>
     /// Builds a query that retrieves the primary resource, including all of its attributes and all targeted relationships, during a create/update/delete
     /// request.
     /// </summary>
-    QueryLayer ComposeForUpdate<TId>(TId id, ResourceType primaryResourceType);
+    QueryLayer ComposeForUpdate<TId>([DisallowNull] TId id, ResourceType primaryResourceType);
 
     /// <summary>
     /// Builds a query for each targeted relationship with a filter to match on its right resource IDs.
@@ -60,5 +61,5 @@ QueryLayer WrapLayerForSecondaryEndpoint<TId>(QueryLayer secondaryLayer, Resourc
     /// <summary>
     /// Builds a query for a to-many relationship with a filter to match on its left and right resource IDs.
     /// </summary>
-    QueryLayer ComposeForHasMany<TId>(HasManyAttribute hasManyRelationship, TId leftId, ICollection<IIdentifiable> rightResourceIds);
+    QueryLayer ComposeForHasMany<TId>(HasManyAttribute hasManyRelationship, [DisallowNull] TId leftId, ICollection<IIdentifiable> rightResourceIds);
 }