DTDLParserExtensions.cs

DTDLParserExtensions.cs

namespace dtdl_dotnet
{
    using Microsoft.Azure.DigitalTwins.Parser;
    using Microsoft.Azure.DigitalTwins.Parser.Models;
    public static class DtmiExtensions
    {
        public static string ToPath(this Dtmi dtmi) => $"{dtmi.ToString().ToLowerInvariant().Replace(":", "/").Replace(";", "-")}.json";
    }

    public static class ModelParserExtensions
    {
        public class InterfaceInfo
        {
            public IReadOnlyDictionary<Dtmi, DTEntityInfo> ObjectModel;
            DTEntityInfo root;
            public InterfaceInfo(IReadOnlyDictionary<Dtmi, DTEntityInfo> m)
            {
                ObjectModel = m;
                root = m.Values.Where(v => v.EntityKind == DTEntityKind.Interface).First(e => e.ChildOf == null);
            }
            public string Id => root.Id.ToString();

            public IEnumerable<DTTelemetryInfo> Telemetries =>
                ((DTInterfaceInfo)root).Contents
                    .Where(c => c.Value.EntityKind == DTEntityKind.Telemetry)
                    .Select(t => (DTTelemetryInfo)t.Value);

            public IEnumerable<DTPropertyInfo> Properties =>
                ((DTInterfaceInfo)root).Contents
                    .Where(c => c.Value.EntityKind == DTEntityKind.Property)
                    .Select(p => (DTPropertyInfo)p.Value);

            public IEnumerable<DTCommandInfo> Commands =>
                ((DTInterfaceInfo)root).Contents
                    .Where(c => c.Value.EntityKind == DTEntityKind.Command)
                    .Select(c => (DTCommandInfo)c.Value);

            public IEnumerable<DTComponentInfo> Components =>
                ((DTInterfaceInfo)root).Contents
                    .Where(c => c.Value.EntityKind == DTEntityKind.Component)
                    .Select(c => (DTComponentInfo)c.Value);

            public IEnumerable<DTRelationshipInfo> Relationships =>
                ((DTInterfaceInfo)root).Contents
                    .Where(c => c.Value.EntityKind == DTEntityKind.Relationship)
                    .Select(r => (DTRelationshipInfo)r.Value);
        }

        public static async Task<InterfaceInfo> ParseAsync(this ModelParser parser, string jsonContent)
            => new InterfaceInfo(await parser.ParseAsync(new string[] { jsonContent }));
    }
}

Allows to iterate over parsed results as

using DTDL_scratch;
using Microsoft.Azure.DigitalTwins.Parser;

string ReadFile(string path) => File.ReadAllText(Path.Join(System.Reflection.Assembly.GetExecutingAssembly().Location + @"./../../../../", path));

var model = await new ModelParser().ParseAsync(ReadFile("dtmi/samples/aninterface-1.json"));

Console.WriteLine(model.Id);

foreach (var t in model.Telemetries)
{
    Console.WriteLine($" [T] {t.Name} {t.Schema.Id}");
}

foreach (var p in model.Properties)
{
    Console.WriteLine($" [P] {p.Name} {p.Schema.Id}");
}

foreach (var c in model.Commands)
{
    Console.WriteLine($" [C] {c.Name} {c.Request.Id} {c.Response.Id}");
}