ArcGIS Pro 3.3 API Reference Guide
ArcGIS.Core.Data.Knowledge Namespace / KnowledgeGraphDataModel Class / GetEntityTypes Method
Example

In This Topic
    GetEntityTypes Method
    In This Topic
    Gets a dictionary, with the keys being the names of the entity types in the data model, and the values being objects containing information about each entity type. This method must be called on the MCT. Use QueuedTask.Run.
    Syntax
    Exceptions
    ExceptionDescription
    This method or property must be called within the lambda passed to QueuedTask.Run.
    Example
    Get KnowledgeGraph Entity Types
    QueuedTask.Run(() =>
    {
      //Create a connection properties
      var kg_props =
          new KnowledgeGraphConnectionProperties(new Uri(url));
      using (var kg = new KnowledgeGraph(kg_props))
      {
        //Get the KnowledgeGraph Data Model
        using (var kg_dm = kg.GetDataModel())
        {
          var dict_types = kg_dm.GetEntityTypes();
    
          foreach (var kvp in dict_types)
          {
            var entity_type = kvp.Value;
            var role = entity_type.GetRole();
            //note "name" will be the same name as the corresponding
            //feature class or table in the KG's relational gdb model
            var name = entity_type.GetName();
            var alias = entity_type.GetAliasName();
            var objectIDPropertyName = entity_type.GetObjectIDPropertyName();
            //etc
    
          }
    
        }
      }
    });
    
    Get All KnowledgeGraph Graph Types
    QueuedTask.Run(() =>
    {
      //Create a connection properties
      var kg_props =
          new KnowledgeGraphConnectionProperties(new Uri(url));
      using (var kg = new KnowledgeGraph(kg_props))
      {
        //Get the KnowledgeGraph Data Model
        using (var kg_datamodel = kg.GetDataModel())
        {
          var entities = kg_datamodel.GetEntityTypes();
          var relationships = kg_datamodel.GetRelationshipTypes();
          var provenance = kg_datamodel.GetMetaEntityTypes();
    
          var all_graph_types = new List<KnowledgeGraphNamedObjectType>();
          all_graph_types.AddRange(entities.Values);
          all_graph_types.AddRange(relationships.Values);
          all_graph_types.AddRange(provenance.Values);
    
          System.Diagnostics.Debug.WriteLine("\r\nGraph Types");
    
          int c = 0;
          foreach (var graph_type in all_graph_types)
          {
            var type_name = graph_type.GetName();
            var role = graph_type.GetRole().ToString();
    
            //equivalent to:
            //var fields = featClassDef.GetFields().Select(f => f.Name).ToList();
            //var field_names = string.Join(",", fields);
            var props = graph_type.GetProperties().Select(p => p.Name).ToList();
            var prop_names = string.Join(",", props);
    
            System.Diagnostics.Debug.WriteLine($"[{c++}]: " +
                $"{type_name}, {role}, {prop_names}");
          }
        }
      }
    });
    
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3.2 or higher.
    See Also