public static IObjectFieldDescriptor Resolver <TResult>(
this IObjectFieldDescriptor descriptor,
Func <IResolverContext, TResult> fieldResolver)
{
return(descriptor
.Type <NativeType <TResult> >()
.Resolver(ctx => Task.FromResult <object>(fieldResolver(ctx)),
typeof(NativeType <TResult>)));
}
/// <summary>
/// Specifies the type of an object field with GraphQL SDL type syntax.
/// </summary>
/// <param name="descriptor">
/// The object field descriptor.
/// </param>
/// <param name="typeSyntax">
/// The GraphQL SDL type syntax.
/// </param>
/// <returns>
/// Returns the object field descriptor for configuration chaining.
/// </returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="descriptor"/> is <c>null</c>.
/// <paramref name="typeSyntax"/> is <c>null</c>.
/// </exception>
/// <exception cref="SyntaxException">
/// The GraphQL SDL type syntax is invalid.
/// </exception>
public static IObjectFieldDescriptor Type(
this IObjectFieldDescriptor descriptor,
string typeSyntax)
{
if (descriptor is null)
{
throw new ArgumentNullException(nameof(descriptor));
}
if (typeSyntax is null)
{
throw new ArgumentNullException(nameof(typeSyntax));
}
return(descriptor.Type(Utf8GraphQLParser.Syntax.ParseTypeReference(typeSyntax)));
}
public static IObjectFieldDescriptor Resolver <TResult>(
this IObjectFieldDescriptor descriptor,
Func <IResolverContext, TResult> resolver)
{
if (descriptor == null)
{
throw new ArgumentNullException(nameof(descriptor));
}
if (resolver == null)
{
throw new ArgumentNullException(nameof(resolver));
}
return(descriptor
.Type <NativeType <TResult> >()
.Resolver(ctx => Task.FromResult <object>(resolver(ctx)),
typeof(NativeType <TResult>)));
}
public static IObjectFieldDescriptor UseLimitOffsetPaging <TSchemaType>(
this IObjectFieldDescriptor descriptor)
where TSchemaType : class
{
descriptor
.Type <PaginationPayloadType <TSchemaType> >()
.Argument("pageIndex", a => a.Type <IntType>())
.Argument("pageSize", a => a.Type <IntType>())
.Use(next => async context =>
{
await next(context);
if (context.Result is IQueryable <TSchemaType> list)
{
var paginatedList = await PaginatedList <TSchemaType> .CreateAsync(list,
context.Argument <int>("pageIndex"), context.Argument <int>("pageSize"));
var result = new PaginationPayload <TSchemaType>(paginatedList.ToList(),
paginatedList.HasNextPage, paginatedList.HasPreviousPage);
context.Result = result;
}
});
return(descriptor);
}
public static IObjectFieldDescriptor NonNullType <T>(this IObjectFieldDescriptor descriptor) where T : class, IOutputType
{
return(descriptor.Type <NonNullType <T> >());
}
public void ConfigFieldDescriptor(IObjectFieldDescriptor descriptor)
{
descriptor
.Type <ListType <PaymentType> >()
.Argument("last", a => a.Type <IdType>());
}
public static IObjectFieldDescriptor Type <TOutputType>(this IObjectFieldDescriptor descriptor, bool nullable) where TOutputType : class, IOutputType
{
return(nullable ? descriptor.Type <TOutputType>() : descriptor.Type <NonNullType <TOutputType> >());
}
internal static IObjectFieldDescriptor UseNamedApiResource <TResourceType, TSchemaType>(this IObjectFieldDescriptor descriptor)
where TResourceType : NamedApiResource
where TSchemaType : ObjectType <TResourceType> =>
descriptor.Type <TSchemaType>()
.Argument("nameOrId", a => a.Type <NonNullType <StringType> >().Description("The identifier or name for the resource."))
.Resolver((ctx, token) => ctx.Service <PokeApiClient>().GetResourceFromParamAsync <TResourceType>(ctx.Argument <string>("nameOrId"), token));
internal static IObjectFieldDescriptor UseApiResource <TResourceType, TSchemaType>(this IObjectFieldDescriptor descriptor)
where TResourceType : ApiResource
where TSchemaType : ObjectType <TResourceType> =>
descriptor.Type <TSchemaType>()
.Argument("id", a => a.Type <NonNullType <IntType> >().Description("The identifier for the resource."))
.Resolver((ctx, token) => ctx.Service <PokeApiClient>().GetResourceAsync <TResourceType>(ctx.Argument <int>("id"), token));