GetDefinitions<T> Method (KnowledgeGraph)
Gets an
IReadOnlyList of specific
ArcGIS.Core.Data.Definition instances associated with each dataset of type in the knowledge graph. This method must be called on the MCT. Use QueuedTask.Run.
Type Parameters
- T
-
The type of dataset definition.
Return Value
A
IReadOnlyList of specific
ArcGIS.Core.Data.Definition instances corresponding to type .
Retrieving GDB FeatureClasses and Definitions
QueuedTask.Run(() =>
{
//Create a connection properties
var kg_props =
new KnowledgeGraphConnectionProperties(new Uri(url));
//Connect to the KnowledgeGraph datastore
//KnowledgeGraph datastores contain tables and feature classes
using (var kg = new KnowledgeGraph(kg_props))
{
//Get the featureclass definitions from the KG datastore
var fc_defs = kg.GetDefinitions<FeatureClassDefinition>();
//For each feature class definition, get the corresponding
//feature class. Note: The name of the feature class will match
//the name of its corresponding KnowledgeGraph named object type
//in the KnowledgeGraph graph data model
foreach (var fc_def in fc_defs)
{
var fc_name = fc_def.GetName();
using (var fc = kg.OpenDataset<FeatureClass>(fc_name))
{
//TODO - use the feature class
}
}
}
});
Retrieving GDB Tables and Definitions
QueuedTask.Run(() =>
{
//Create a connection properties
var kg_props =
new KnowledgeGraphConnectionProperties(new Uri(url));
//Connect to the KnowledgeGraph datastore
//KnowledgeGraph datastores contain tables and feature classes
using (var kg = new KnowledgeGraph(kg_props))
{
//Get the table definitions from the KG datastore
var tbl_defs = kg.GetDefinitions<TableDefinition>();
//For each table definition, get the corresponding
//table. Note: The name of the table will match the name
//of its corresponding KnowledgeGraph named object type in
//the KnowledgeGraph graph data model
foreach (var tbl_def in tbl_defs)
{
var tbl_name = tbl_def.GetName();
using (var fc = kg.OpenDataset<Table>(tbl_name))
{
//TODO - use the table
}
}
}
});
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3.2 or higher.