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Resolved Deserialization not supported for SnapObjects.Data.IDataUnpacker
  1. Issue
  2.  JSON
  3.  .NET DataStore
0 Votes
  1. Carl Bolduc
  2. .NET DataStore
  3. Monday, 11 September 2023 05:43 PM UTC

I'm creating an API with the help of the PowerScript migrator. I'm following this tutorial:
PB to C#: Porting Business Logics with Minimum Refactoring Hassle (appeon.com)

I'm having an issue with the POST method, here is an extract of my code:

// POST api/WLieuInterventionModify/UeSave
[HttpPost]
[ProducesResponseType(StatusCodes.Status200OK)]
[ProducesResponseType(StatusCodes.Status500InternalServerError)]
public ActionResult UeSave(IDataUnpacker dataUnpacker)
{
    // Declare and initialize local .NET DataStore variables
    // By getting the Packaged DataStores
    IDataStore lieuIntervention = dataUnpacker.GetDataStore("lieu_intervention");

    // Check if the modification was successful
    if (_service.UeSave(lieuIntervention))
    {
       // Return Status Code 200
       return Ok();
    }
    else
    {
       // Return a Status Code 500 for Internal Server Error
       return StatusCode(StatusCodes.Status500InternalServerError);
    }
}

When I call this enpoint form Firefox (using Swagger UI) or from PowerBuilder (using a RestClient), I get this error:

Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware[1]
 An unhandled exception has occurred while executing the request.
 System.NotSupportedException: Deserialization of interface types is not supported. Type 'SnapObjects.Data.IDataUnpacker'. Path: $ | LineNumber: 0 | BytePositionInLine: 1.
 ---> System.NotSupportedException: Deserialization of interface types is not supported. Type 'SnapObjects.Data.IDataUnpacker'.
 --- End of inner exception stack trace ---
 at System.Text.Json.ThrowHelper.ThrowNotSupportedException(ReadStack& state, Utf8JsonReader& reader, NotSupportedException ex)
 at System.Text.Json.ThrowHelper.ThrowNotSupportedException_DeserializeNoConstructor(Type type, Utf8JsonReader& reader, ReadStack& state)
 at System.Text.Json.Serialization.Converters.ObjectDefaultConverter`1.OnTryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
 at System.Text.Json.Serialization.JsonConverter`1.TryRead(Utf8JsonReader& reader, Type typeToConvert, JsonSerializerOptions options, ReadStack& state, T& value)
 at System.Text.Json.Serialization.JsonConverter`1.ReadCore(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
 at System.Text.Json.Serialization.JsonConverter`1.ReadCoreAsObject(Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
 at System.Text.Json.JsonSerializer.ReadCore[TValue](JsonConverter jsonConverter, Utf8JsonReader& reader, JsonSerializerOptions options, ReadStack& state)
 at System.Text.Json.JsonSerializer.ReadCore[TValue](JsonReaderState& readerState, Boolean isFinalBlock, ReadOnlySpan`1 buffer, JsonSerializerOptions options, ReadStack& state, JsonConverter converterBase)
 at System.Text.Json.JsonSerializer.ContinueDeserialize[TValue](ReadBufferState& bufferState, JsonReaderState& jsonReaderState, ReadStack& readStack, JsonConverter converter, JsonSerializerOptions options)
 at System.Text.Json.JsonSerializer.ReadAllAsync[TValue](Stream utf8Json, JsonTypeInfo jsonTypeInfo, CancellationToken cancellationToken)
 at Microsoft.AspNetCore.Mvc.Formatters.SystemTextJsonInputFormatter.ReadRequestBodyAsync(InputFormatterContext context, Encoding encoding)
 at Microsoft.AspNetCore.Mvc.Formatters.SystemTextJsonInputFormatter.ReadRequestBodyAsync(InputFormatterContext context, Encoding encoding)
 at Microsoft.AspNetCore.Mvc.ModelBinding.Binders.BodyModelBinder.BindModelAsync(ModelBindingContext bindingContext)
 at Microsoft.AspNetCore.Mvc.ModelBinding.ParameterBinder.BindModelAsync(ActionContext actionContext, IModelBinder modelBinder, IValueProvider valueProvider, ParameterDescriptor parameter, ModelMetadata metadata, Object value, Object container)
 at Microsoft.AspNetCore.Mvc.Controllers.ControllerBinderDelegateProvider.<>c__DisplayClass0_0.<<CreateBinderDelegate>g__Bind|0>d.MoveNext()
 --- End of stack trace from previous location ---
 at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeInnerFilterAsync>g__Awaited|13_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
 at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|20_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
 at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
 at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
 at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
 at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
 at Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)
 at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)
 at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

I can the GET routes, I only have an error when I try to deserialize data in a POST.

I compared my code with the OrderDemo project and I can't see what I am doing wrong. The only thing I noticed is that the OrderDemo project is using SnapObjects 3.0.0 while my project is using SnapObjects 4.1.0. 

 

 

 

 

.NET DataStore and Entity Framework Better JavaScript support
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