I use .net5 and .netStandard from nuget. The structure of the solution is simple - class library with ecomodel and webapi project. I've registers custom service in the EcoSpace1.cs as it was advised by eco gurus long, long time ago.
public interface IMyService
{
int Class1Count();
}
public class MyServiceClass : IMyService
{
private IEcoServiceProvider ServiceProvider { get; set; }
public MyServiceClass(IEcoServiceProvider serviceProvider)
{
ServiceProvider = serviceProvider;
}
public int Class1Count()
{
var v = ServiceProvider.GetEcoService<IOclService>().Evaluate("Class1.allInstances->size");
return (int)v.AsObject;
}
}
The rule for a webapi project's controller- inherit from the Controller class - due to the Swashbuckle.AspNetCore (swagger) usage. Swagger shows errors if I inherit a controller from the ModelDrivenControllerBase
But the code above is OK, the GET works perfect:
public class MySecondEcoServiceController : Controller
{
[HttpGet]
public int Get()
{
using (EcoSpace1 es=new EcoSpace1())
{
es.Active = true;
int r = es.MyService.Class1Count();
return r;
}
}
}
It works till I tried to add another method into the IMyService and to get json. I tried AsTajson by adding derived attribute to the Class1 with DerivationOcl.
Class1.allInstances->first.AsTaJson( 'SampleViewModel', false )
or
self.AsTaJson( 'SampleViewModel', false )
In the MyServiceClass the implementation of the Get is:
Class1 v = (Class1)ServiceProvider.GetEcoService<IOclService>().Evaluate("Class1.allInstances->first").AsObject;
json = v.Attribute2;
If I tried GET this value - exception:
Eco.FrameworkImpl.Ocl.EBoldOCLError: 'bughuntinfo internaleval:84 es seems fine.Object reference not set to an instance of an object.'
What is the proper way (or EcoService?) to get values returned by TaJson?
