UnboundOperation string param swagger error

[itlizhi]

Short summary (3-5 sentences) describing the issue.

Assemblies affected

V1.1.1

Reproduce steps

Clone project Modify Microsoft.Restier.Samples.Northwind.AspNetCore GetFirstCategory add (string code)

    [UnboundOperation]
    public Category GetFirstCategory(string code)
    {
        var claimsPrincipal = ClaimsPrincipal.Current;
        Console.WriteLine($"ClaimsPrincipal Logged In: {claimsPrincipal.Identity.IsAuthenticated}");
        return DbContext.Categories.FirstOrDefault();
    }

open swagger throw error

Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
An unhandled exception has occurred while executing the request.
System.InvalidCastException: Unable to cast object of type 'Microsoft.OData.Edm.EdmPrimitiveTypeReference' to type 'Microsoft.OData.Edm.IEdmStringTypeReference'.
at Microsoft.OpenApi.OData.Generator.OpenApiEdmTypeSchemaGenerator.CreateSchema(ODataContext context, IEdmPrimitiveTypeReference primitiveType)
at Microsoft.OpenApi.OData.Generator.OpenApiEdmTypeSchemaGenerator.CreateEdmTypeSchema(ODataContext context, IEdmTypeReference edmTypeReference)
at Microsoft.OpenApi.OData.Generator.OpenApiParameterGenerator.CreateParameters(ODataContext context, IEdmFunction function, IDictionary`2 parameterNameMapping)
at Microsoft.OpenApi.OData.Generator.OpenApiParameterGenerator.CreateParameters(ODataContext context, IEdmFunctionImport functionImport)
at Microsoft.OpenApi.OData.Operation.EdmFunctionImportOperationHandler.SetParameters(OpenApiOperation operation)
at Microsoft.OpenApi.OData.Operation.OperationHandler.CreateOperation(ODataContext context, ODataPath path)
at Microsoft.OpenApi.OData.PathItem.PathItemHandler.AddOperation(OpenApiPathItem item, OperationType operationType)
at Microsoft.OpenApi.OData.PathItem.OperationImportPathItemHandler.SetOperations(OpenApiPathItem item)
at Microsoft.OpenApi.OData.PathItem.PathItemHandler.CreatePathItem(ODataContext context, ODataPath path)
at Microsoft.OpenApi.OData.Generator.OpenApiPathItemGenerator.CreatePathItems(ODataContext context)
at Microsoft.OpenApi.OData.Generator.OpenApiPathsGenerator.CreatePaths(ODataContext context)
at Microsoft.OpenApi.OData.Generator.OpenApiDocumentGenerator.CreateDocument(ODataContext context)
at Microsoft.OpenApi.OData.EdmModelOpenApiExtensions.ConvertToOpenApi(IEdmModel model, OpenApiConvertSettings settings)
at Microsoft.Restier.AspNetCore.Swagger.RestierSwaggerProvider.GetSwagger(String documentName, String host, String basePath) in D:\github\dotnet_start\RESTier\src\Microsoft.Restier.AspNetCore.Swagger\RestierSwaggerProvider.cs:line 73
at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
at Microsoft.Restier.AspNetCore.Middleware.RestierClaimsPrincipalMiddleware.InvokeAsync(HttpContext httpContext, IHttpContextAccessor contextAccessor) in D:\github\dotnet_start\RESTier\src\Microsoft.Restier.AspNetCore\Middleware\RestierClaimsPrincipalMiddleware.cs:line 51
at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
at Microsoft.Restier.AspNetCore.Middleware.ODataBatchHttpContextFixerMiddleware.InvokeAsync(HttpContext httpContext, IHttpContextAccessor contextAccessor) in D:\github\dotnet_start\RESTier\src\Microsoft.Restier.AspNetCore\Middleware\ODataBatchHttpContextFixerMiddleware.cs:line 49
at Microsoft.AspNet.OData.Batch.ODataBatchMiddleware.Invoke(HttpContext context)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddlewareImpl.Invoke(HttpContext context)

[cilerler]

You might find it helpful to review this issue #764