private static string GetRelationshipFromDigitalTwinIds(DigitalTwinsClient client, string sourceTwinId, string targetTwinId)
{
string relationshipId = "";
string sourcedtmi = "";
string targetdtmi = "";
//obtain the dtmi for the target
string q = string.Format("SELECT v.$metadata.$model FROM DIGITALTWINS v WHERE $dtId = '{0}' AND IS_PRIMITIVE(v.$metadata.$model)", targetTwinId);
if (q.Length > 0)
{
Pageable <string> result = client.Query(q);
foreach (string s in result)
{
using (JsonDocument jdoc = JsonDocument.Parse(s))
{
JsonElement ele = jdoc.RootElement;
targetdtmi = ele.GetProperty("$model").ToString();
}
}
}
//obtain the dtmi for the source
q = string.Format("SELECT v.$metadata.$model FROM DIGITALTWINS v WHERE $dtId = '{0}' AND IS_PRIMITIVE(v.$metadata.$model)", sourceTwinId);
if ((q.Length > 0) && (targetdtmi.Length > 0))
{
Pageable <string> result = client.Query(q);
foreach (string s in result)
{
using (JsonDocument jdoc = JsonDocument.Parse(s))
{
JsonElement ele = jdoc.RootElement;
sourcedtmi = ele.GetProperty("$model").ToString();
}
}
dtdlInterfaceModel targetDTDL = DigitalTwinModelMethods.GetDTDLModel(client, sourcedtmi);
if (targetDTDL != null)
{
foreach (dtdlRelationshipModel r in targetDTDL.relationships)
{
if (r.target == targetdtmi)
{
relationshipId = r.name;
Console.WriteLine("Relationship created: {0}", JsonSerializer.Serialize <dtdlRelationshipModel>(r));
break;
}
}
}
}
return(relationshipId);
}
static async Task Main(string[] args)
{
DefaultAzureCredential cred = new DefaultAzureCredential();
DigitalTwinsClient client = new DigitalTwinsClient(new Uri("https://mobility-vss.api.wus2.digitaltwins.azure.net"), cred);
gVehicle = new List <dtdlInterfaceModel>();
bool loop = true;
while (loop)
{
int result;
string c = ReadOptions();
if (int.TryParse(c, out result))
{
int i = int.Parse(c.ToString());
switch (i)
{
case 0: loop = false;
break;
case 1: await DigitalTwinMethods.ReadProperty(client);
break;
case 2: await DigitalTwinMethods.WriteProperty(client);
break;
case 3: await DigitalTwinModelMethods.ListModels(client);
break;
case 4: await DigitalTwinModelMethods.GetModel(client);
break;
case 5: await DigitalTwinModelMethods.GetSchemaType(client);
break;
case 6: await DigitalTwinModelMethods.CreateModels(client);
break;
case 7: await DigitalTwinMethods.CreateTwin(client);
break;
case 8: await DigitalTwinMethods.GetTwin(client);
break;
case 9: DigitalTwinMethods.DeleteTwin(client);
break;
case 10: await DigitalTwinMethods.CreateRelationship(client);
break;
case 11: await DigitalTwinMethods.GetRelationships(client);
break;
case 12: await DigitalTwinMethods.DeleteRelationship(client);
break;
default: break;
}
}
}
}