Fixed and issue where the connection type was registered twice.

CHANGELOG.md

@@ -16,6 +16,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Subscription now uses pipeline API to abstract sockets. [#807](https://github.com/ChilliCream/hotchocolate/pull/807)
 - Improved parser performance. [#806](https://github.com/ChilliCream/hotchocolate/pull/806)
 
+## [9.0.4] - 2019-06-16
+
+### Fixed
+
+- Fixed paging flaws that in some cases lead to the connection type being registered twice. [#842](https://github.com/ChilliCream/hotchocolate/pull/842)
+
+## [9.0.3] - 2019-06-13
+
+### Fixed
+
+- Fixed issues where the type initializer would swallow schema errors.
+
 ## [9.0.2] - 2019-06-12
 
 ### Fixed

examples/AspNetCore.StarWars/.vscode/launch.json

@@ -0,0 +1,34 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": ".NET Core Launch (web)",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build",
+            "program": "${workspaceFolder}/bin/Debug/netcoreapp2.1/AspNetCore.StarWars.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "stopAtEntry": false,
+            "serverReadyAction": {
+                "action": "openExternally",
+                "pattern": "^\\s*Now listening on:\\s+(https?://\\S+)"
+            },
+            "env": {
+                "ASPNETCORE_ENVIRONMENT": "Development"
+            },
+            "sourceFileMap": {
+                "/Views": "${workspaceFolder}/Views"
+            }
+        },
+        {
+            "name": ".NET Core Attach",
+            "type": "coreclr",
+            "request": "attach",
+            "processId": "${command:pickProcess}"
+        }
+    ]
+}

examples/AspNetCore.StarWars/.vscode/tasks.json

@@ -0,0 +1,17 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet build",
+            "type": "shell",
+            "group": "build",
+            "presentation": {
+                "reveal": "silent"
+            },
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

examples/AspNetCore.StarWars/Types/CharacterType.cs

@@ -1,4 +1,5 @@
 using HotChocolate.Types;
+using HotChocolate.Types.Relay;
 using StarWars.Models;
 
 namespace StarWars.Types
@@ -17,7 +18,7 @@ protected override void Configure(IInterfaceTypeDescriptor<ICharacter> descripto
                 .Type<StringType>();
 
             descriptor.Field(f => f.Friends)
-                .Type<ListType<CharacterType>>();
+                .UsePaging<CharacterType>();
 
             descriptor.Field(f => f.AppearsIn)
                 .Type<ListType<EpisodeType>>();

examples/AspNetCore.StarWars/Types/DroidType.cs

@@ -1,4 +1,5 @@
 using HotChocolate.Types;
+using HotChocolate.Types.Relay;
 using StarWars.Models;
 using StarWars.Resolvers;
 
@@ -18,7 +19,7 @@ protected override void Configure(IObjectTypeDescriptor<Droid> descriptor)
                 .Type<ListType<EpisodeType>>();
 
             descriptor.Field<SharedResolvers>(r => r.GetCharacter(default, default))
-                .Type<ListType<CharacterType>>()
+                .UsePaging<CharacterType>()
                 .Name("friends");
 
             descriptor.Field<SharedResolvers>(t => t.GetHeight(default, default))

examples/AspNetCore.StarWars/Types/HumanType.cs

@@ -1,4 +1,5 @@
 using HotChocolate.Types;
+using HotChocolate.Types.Relay;
 using StarWars.Models;
 using StarWars.Resolvers;
 
@@ -18,7 +19,7 @@ protected override void Configure(IObjectTypeDescriptor<Human> descriptor)
                 .Type<ListType<EpisodeType>>();
 
             descriptor.Field<SharedResolvers>(r => r.GetCharacter(default, default))
-                .Type<ListType<CharacterType>>()
+                .UsePaging<CharacterType>()
                 .Name("friends");
 
             descriptor.Field<SharedResolvers>(t => t.GetHeight(default, default))

src/Core/Types.Tests/Types/Relay/ConnectionTypeTests.cs

@@ -43,7 +43,7 @@ public void CheckFieldsAreCorrect()
                 },
                 t =>
                 {
-                    Assert.Equal("items", t.Name);
+                    Assert.Equal("nodes", t.Name);
                     Assert.IsType<StringType>(
                         Assert.IsType<ListType>(t.Type).ElementType);
                 },
@@ -104,7 +104,7 @@ public async Task UsePaging_WithNonNull_ElementType()
                         cursor
                         node
                     }
-                    items
+                    nodes
                     pageInfo
                     {
                         hasNextPage
@@ -122,6 +122,43 @@ public async Task UsePaging_WithNonNull_ElementType()
             result.MatchSnapshot();
         }
 
+        [Fact]
+        public async Task UsePaging_WithComplexType()
+        {
+            // arrange
+            ISchema schema = SchemaBuilder.New()
+                .AddType<FooType>()
+                .AddQueryType<QueryType3>()
+                .Create();
+
+            IQueryExecutor executor = schema.MakeExecutable();
+
+            string query = @"
+            {
+                s
+                {
+                    bar {
+                        edges {
+                            cursor
+                            node
+                        }
+                        pageInfo
+                        {
+                            hasNextPage
+                        }
+                        totalCount
+                    }
+                }
+            }
+            ";
+
+            // act
+            IExecutionResult result = await executor.ExecuteAsync(query);
+
+            // assert
+            result.MatchSnapshot();
+        }
+
         public class QueryType
             : ObjectType
         {
@@ -152,10 +189,50 @@ protected override void Configure(IObjectTypeDescriptor descriptor)
             }
         }
 
+        public class QueryType3
+            : ObjectType
+        {
+            protected override void Configure(IObjectTypeDescriptor descriptor)
+            {
+                descriptor.Name("Query");
+                descriptor.Field("s")
+                    .Resolver(ctx => new Foo());
+            }
+        }
+
         public class Query
         {
             public ICollection<string> Strings { get; } =
                 new List<string> { "a", "b", "c", "d", "e", "f", "g" };
         }
+
+        public class FooType
+            : ObjectType<Foo>
+        {
+            protected override void Configure(
+                IObjectTypeDescriptor<Foo> descriptor)
+            {
+                descriptor.Interface<FooInterfaceType>();
+                descriptor.Field(t => t.Bar).UsePaging<StringType>();
+            }
+        }
+
+        public class FooInterfaceType
+            : InterfaceType
+        {
+            protected override void Configure(
+                IInterfaceTypeDescriptor descriptor)
+            {
+                descriptor.Name("IFoo");
+                descriptor.Field("bar")
+                    .UsePaging<StringType>();
+            }
+        }
+
+        public class Foo
+        {
+            public ICollection<string> Bar { get; } =
+                new List<string> { "a", "b", "c", "d", "e", "f", "g" };
+        }
     }
 }

src/Core/Types.Tests/Types/Relay/__snapshots__/ConnectionTypeTests.UsePaging_WithComplexType.snap

@@ -0,0 +1,45 @@
+{
+  "Data": {
+    "s": {
+      "bar": {
+        "edges": [
+          {
+            "cursor": "eyJfX3RvdGFsQ291bnQiOjcsIl9fcG9zaXRpb24iOjB9",
+            "node": "a"
+          },
+          {
+            "cursor": "eyJfX3RvdGFsQ291bnQiOjcsIl9fcG9zaXRpb24iOjF9",
+            "node": "b"
+          },
+          {
+            "cursor": "eyJfX3RvdGFsQ291bnQiOjcsIl9fcG9zaXRpb24iOjJ9",
+            "node": "c"
+          },
+          {
+            "cursor": "eyJfX3RvdGFsQ291bnQiOjcsIl9fcG9zaXRpb24iOjN9",
+            "node": "d"
+          },
+          {
+            "cursor": "eyJfX3RvdGFsQ291bnQiOjcsIl9fcG9zaXRpb24iOjR9",
+            "node": "e"
+          },
+          {
+            "cursor": "eyJfX3RvdGFsQ291bnQiOjcsIl9fcG9zaXRpb24iOjV9",
+            "node": "f"
+          },
+          {
+            "cursor": "eyJfX3RvdGFsQ291bnQiOjcsIl9fcG9zaXRpb24iOjZ9",
+            "node": "g"
+          }
+        ],
+        "pageInfo": {
+          "hasNextPage": false
+        },
+        "totalCount": 7
+      }
+    }
+  },
+  "Extensions": {},
+  "Errors": [],
+  "ContextData": {}
+}

src/Core/Types.Tests/Types/Relay/__snapshots__/ConnectionTypeTests.UsePaging_WithNonNull_ElementType.snap

@@ -11,7 +11,7 @@
           "node": "g"
         }
       ],
-      "items": [
+      "nodes": [
         "f",
         "g"
       ],

src/Core/Types/Types/Relay/ConnectionType.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Linq;
 using HotChocolate.Configuration;
-using HotChocolate.Resolvers;
 using HotChocolate.Types.Descriptors;
 using HotChocolate.Types.Descriptors.Definitions;
 
@@ -29,7 +28,6 @@ public ConnectionType(
 
         public IEdgeType EdgeType { get; private set; }
 
-
         protected new static void Configure(
             IObjectTypeDescriptor<IConnection> descriptor)
         {
@@ -50,7 +48,7 @@ public ConnectionType(
                 .Description("A list of edges.")
                 .Type<ListType<NonNullType<EdgeType<T>>>>();
 
-            descriptor.Field("items")
+            descriptor.Field("nodes")
                 .Description("A flattened list of the nodes.")
                 .Type<ListType<T>>()
                 .Resolver(ctx =>
@@ -77,28 +75,5 @@ protected override void OnCompleteType(
             EdgeType = context.GetType<EdgeType<T>>(
                 ClrTypeReference.FromSchemaType<EdgeType<T>>());
         }
-
-        public static ConnectionType<T> CreateWithTotalCount()
-        {
-            return new ConnectionType<T>(c =>
-            {
-                c.Field("totalCount")
-                    .Type<NonNullType<IntType>>()
-                    .Resolver(ctx => GetTotalCount(ctx));
-            });
-        }
-
-        private static IResolverResult<long> GetTotalCount(
-            IResolverContext context)
-        {
-            IConnection connection = context.Parent<IConnection>();
-            if (connection.PageInfo.TotalCount.HasValue)
-            {
-                return ResolverResult.CreateValue(
-                    connection.PageInfo.TotalCount.Value);
-            }
-            return ResolverResult.CreateError<long>(
-                "The total count was not provided by the connection.");
-        }
     }
 }

src/Core/Types/Types/Relay/ConnectionWithCountType.cs

@@ -0,0 +1,46 @@
+using System;
+using HotChocolate.Resolvers;
+
+namespace HotChocolate.Types.Relay
+{
+    public class ConnectionWithCountType<T>
+        : ConnectionType<T>
+        where T : IOutputType
+    {
+        public ConnectionWithCountType()
+            : base(descriptor => Configure(descriptor))
+        {
+        }
+
+        public ConnectionWithCountType(
+            Action<IObjectTypeDescriptor<IConnection>> configure)
+            : base(descriptor =>
+            {
+                Configure(descriptor);
+                configure?.Invoke(descriptor);
+            })
+        {
+        }
+
+        protected new static void Configure(
+            IObjectTypeDescriptor<IConnection> descriptor)
+        {
+            descriptor.Field("totalCount")
+                .Type<NonNullType<IntType>>()
+                .Resolver(ctx => GetTotalCount(ctx));
+        }
+
+        private static IResolverResult<long> GetTotalCount(
+            IResolverContext context)
+        {
+            IConnection connection = context.Parent<IConnection>();
+            if (connection.PageInfo.TotalCount.HasValue)
+            {
+                return ResolverResult.CreateValue(
+                    connection.PageInfo.TotalCount.Value);
+            }
+            return ResolverResult.CreateError<long>(
+                "The total count was not provided by the connection.");
+        }
+    }
+}