KnowledgeGraphPropertyInfo Class
Class representing information about the names of the unique identifer properties in a knowledge graph. See
KnowledgeGraph.GetPropertyNameInfo.
Create a new Relationship from Existing Entities 1
var create_rel = await QueuedTask.Run(() =>
{
//Instantiate an operation for the Create
var edit_op = new EditOperation()
{
Name = "Create a new relationship record",
SelectNewFeatures = true
};
//Use datasets or feature layer(s) or standalone table(s)
//Get a reference to the KnowledgeGraph
//var kg = ... ;
//We will use a relate called 'HasEmployee' to relate an Organization w/ a Person
//Use either tables or map members to get the rows to be related...
var org_fc = kg.OpenDataset<FeatureClass>("Organization");
var person_tbl = kg.OpenDataset<Table>("Person");
//Get the relationship dataset
//We can use either a table or standalone table
var emp_tbl = kg.OpenDataset<Table>("HasEmployee");
//we need the names of the origin and destination relationship properties
var kg_prop_info = kg.GetPropertyNameInfo();
//Arbitrarily use the first record from the two entity datasets "to be" related
//Entities are always related by Global ID. Origin to Destination specifies the
//direction (of the relate).
//
//Populate the attributes for the relationship
var attribs = new Dictionary<string, object>();
using (var rc = org_fc.Search())
{
if (rc.MoveNext())
//Use the KnowledgeGraphPropertyInfo to avoid hardcoding...
attribs[kg_prop_info.OriginIDPropertyName] = rc.Current.GetGlobalID();
}
using (var rc = person_tbl.Search())
{
if (rc.MoveNext())
//Use the KnowledgeGraphPropertyInfo to avoid hardcoding...
attribs[kg_prop_info.DestinationIDPropertyName] = rc.Current.GetGlobalID();
}
//Add any extra attribute information for the relation as needed
attribs["StartDate"] = new DateTimeOffset(DateTime.Now);
//Add a create for the relationship to the operation
edit_op.Create(emp_tbl, attribs);
//Do the create
return edit_op.Execute();
});
System.Object
ArcGIS.Core.Data.Knowledge.KnowledgeGraphPropertyInfo
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3.4 or higher.