jetherald/JetHerald/DapperMappers.cs

using System.Data;

using Dapper;

namespace JetHerald
{
    public static class DapperConverters
    {
        static bool registered = false;
        public static void Register()
        {
            if (registered)
                return;
            registered = true;

            SqlMapper.AddTypeHandler(new NamespacedIdHandler());
        }

        class NamespacedIdHandler : SqlMapper.TypeHandler<NamespacedId>
        {
            public override void SetValue(IDbDataParameter parameter, NamespacedId value) => parameter.Value = value.ToString();
            public override NamespacedId Parse(object value) => new((string)value);
        }
    }
}