OneOfAttribute

[OneOf(types)] attribute is a way to define an oneOf type for a referable type. DataTypeRequest<NetOneOf> requests for .net type as one-of. (Avalanche.DataType.Net.dll)

// Create service
IService service = Services.Create(NetTypeHandlers.Instance);
// Create request
DataTypeRequest<NetOneOf> request = new(typeof(IResponse));
// Query 
IOneOfType datatype = service.GetRequired<DataTypeRequest<NetOneOf>, IOneOfType>(request);

[OneOf(typeof(Result), typeof(Error))]
public interface IResponse
{
    public sealed class Result : IResponse
    {
        public string? Value;
    }
    public sealed class Error : IResponse
    {
        public int ErrorCode;
        public string? Message;
    }
}

oneoftype+IResponse, docs, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null : IOneOfType
├── Fields[0] = 1 : IFieldType
│   └── Value = IResponse+Result, docs, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null : IRecordType
│       └── Fields[0] = Value : IFieldType
│           └── Value = string : IStringType
│               └── Element = byte : IIntegerType
└── Fields[1] = 2 : IFieldType
    └── Value = IResponse+Error, docs, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null : IRecordType
        ├── Fields[0] = ErrorCode : IFieldType
        │   └── Value = int32 : IIntegerType
        └── Fields[1] = Message : IFieldType
            └── Value = string : IStringType

Full Example

Full example

using Avalanche.DataType;
using Avalanche.Identity;
using Avalanche.Service;
using static System.Console;

public class oneofattribute
{
    public static void Run()
    {
        {
            // <04>
            // Create service
            IService service = Services.Create(NetTypeHandlers.Instance);
            // Create request
            DataTypeRequest<NetOneOf> request = new(typeof(IResponse));
            // Query 
            IOneOfType datatype = service.GetRequired<DataTypeRequest<NetOneOf>, IOneOfType>(request);
            // </04>
            // Print
            WriteLine(datatype.PrintTree());
        }
    }

    // <100>
    [OneOf(typeof(Result), typeof(Error))]
    public interface IResponse
    {
        public sealed class Result : IResponse
        {
            public string? Value;
        }
        public sealed class Error : IResponse
        {
            public int ErrorCode;
            public string? Message;
        }
    }
    // </100>
}