Fix GraphQL schema creation when using indexed fields. (OrchardCMS#17360)

Author: gvkries

src/OrchardCore/OrchardCore.Apis.GraphQL.Abstractions/Queries/WhereInputObjectGraphType.cs

@@ -99,26 +99,26 @@ public virtual void AddScalarFilterFields(Type graphType, string fieldName, stri
 
     private void AddEqualityFilters(Type graphType, string fieldName, string description)
     {
-        AddFilterFields(CreateGraphType(graphType), EqualityOperators, fieldName, description);
+        AddFilterFields(graphType, EqualityOperators, fieldName, description);
     }
 
     private void AddStringFilters(Type graphType, string fieldName, string description)
     {
-        AddFilterFields(CreateGraphType(graphType), StringComparisonOperators, fieldName, description);
+        AddFilterFields(graphType, StringComparisonOperators, fieldName, description);
     }
 
     private void AddNonStringFilters(Type graphType, string fieldName, string description)
     {
-        AddFilterFields(CreateGraphType(graphType), NonStringValueComparisonOperators, fieldName, description);
+        AddFilterFields(graphType, NonStringValueComparisonOperators, fieldName, description);
     }
 
     private void AddMultiValueFilters(Type graphType, string fieldName, string description)
     {
-        AddFilterFields(CreateGraphType(graphType), MultiValueComparisonOperators, fieldName, description);
+        AddFilterFields(graphType, MultiValueComparisonOperators, fieldName, description);
     }
 
     private void AddFilterFields(
-        IGraphType resolvedType,
+        Type graphType,
         IDictionary<string, Func<IStringLocalizer, string, string>> filters,
         string fieldName,
         string description)
@@ -129,45 +129,8 @@ private void AddFilterFields(
             {
                 Name = fieldName + filter.Key,
                 Description = filter.Value(S, description),
-                ResolvedType = resolvedType,
+                Type = graphType,
             });
         }
     }
-
-    private readonly Dictionary<Type, IGraphType> graphTypes = new();
-
-    private IGraphType CreateGraphType(Type type)
-    {
-        if (type.IsGenericType)
-        {
-            var genericDef = type.GetGenericTypeDefinition();
-            if (genericDef == typeof(ListGraphType<>))
-            {
-                var innerType = type.GetGenericArguments()[0];
-
-                return new ListGraphType(CreateGraphType(innerType));
-            }
-
-            if (genericDef == typeof(NonNullGraphType<>))
-            {
-                var innerType = type.GetGenericArguments()[0];
-
-                return new NonNullGraphType(CreateGraphType(innerType));
-            }
-        }
-
-        if (typeof(ScalarGraphType).IsAssignableFrom(type))
-        {
-            if (!graphTypes.TryGetValue(type, out var graphType))
-            {
-                graphType = (IGraphType)Activator.CreateInstance(type);
-
-                graphTypes[type] = graphType;
-            }
-
-            return graphType;
-        }
-
-        throw new InvalidOperationException($"{type.Name} is not a valid {nameof(ScalarGraphType)}.");
-    }
 }

src/OrchardCore/OrchardCore.ContentManagement.GraphQL/Queries/Types/DynamicContentTypeBuilder.cs

@@ -172,7 +172,7 @@ protected void BuildInternal(ISchema schema, ContentTypeDefinition contentTypeDe
                         Name = partFieldName,
                         Description = S["Represents a {0}.", part.PartDefinition.Name],
                         Type = typeof(DynamicPartWhereInputGraphType),
-                        ResolvedType = new DynamicPartWhereInputGraphType(part, serviceProvider.GetRequiredService<IStringLocalizer<DynamicPartWhereInputGraphType>>())
+                        ResolvedType = new DynamicPartWhereInputGraphType(part, schema, contentFieldProviders, serviceProvider.GetRequiredService<IStringLocalizer<DynamicPartWhereInputGraphType>>())
                     };
 
                     inputGraphType.AddField(field);

src/OrchardCore/OrchardCore.ContentManagement.GraphQL/Queries/Types/DynamicPartWhereInputGraphType.cs

@@ -1,5 +1,4 @@
 using GraphQL.Types;
-using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Localization;
 using OrchardCore.Apis.GraphQL.Queries;
 using OrchardCore.ContentManagement.Metadata.Models;
@@ -8,41 +7,27 @@ namespace OrchardCore.ContentManagement.GraphQL.Queries.Types;
 
 public sealed class DynamicPartWhereInputGraphType : WhereInputObjectGraphType<ContentPart>
 {
-    private ContentTypePartDefinition _part;
-
     public DynamicPartWhereInputGraphType(
         ContentTypePartDefinition part,
+        ISchema schema,
+        IEnumerable<IContentFieldProvider> contentFieldProviders,
         IStringLocalizer<DynamicPartWhereInputGraphType> stringLocalizer)
         : base(stringLocalizer)
     {
         Name = $"{part.Name}WhereInput";
-        _part = part;
-    }
 
-    public override void Initialize(ISchema schema)
-    {
-        if (schema is IServiceProvider serviceProvider)
+        foreach (var field in part.PartDefinition.Fields)
         {
-            var contentFieldProviders = serviceProvider.GetServices<IContentFieldProvider>().ToList();
-
-            foreach (var field in _part.PartDefinition.Fields)
+            foreach (var fieldProvider in contentFieldProviders)
             {
-                foreach (var fieldProvider in contentFieldProviders)
-                {
-                    var fieldType = fieldProvider.GetField(schema, field, _part.Name);
+                var fieldType = fieldProvider.GetField(schema, field, part.Name);
 
-                    if (fieldType != null)
-                    {
-                        AddScalarFilterFields(fieldType.Type, fieldType.Name, fieldType.Description);
-                        break;
-                    }
+                if (fieldType != null)
+                {
+                    AddScalarFilterFields(fieldType.Type, fieldType.Name, fieldType.Description);
+                    break;
                 }
             }
         }
-
-        // Part is not required here anymore, do not keep it alive.
-        _part = null;
-
-        base.Initialize(schema);
     }
 }