ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Data.Knowledge Namespace / KnowledgeGraphQueryFilter Class / ProvenanceBehavior Property
Example

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    ProvenanceBehavior Property (KnowledgeGraphQueryFilter)
    In This Topic
    Indicates whether entities with an entity type of role KnowledgeGraphNamedObjectTypeRole.Provenance should be excluded or included in the query results. Default value is KnowledgeGraphProvenanceBehavior.Exclude.
    Syntax
    public KnowledgeGraphProvenanceBehavior ProvenanceBehavior {get; set;}
    Public Property ProvenanceBehavior As KnowledgeGraphProvenanceBehavior
    Example
    Submit a Graph Query
    //On the QueuedTask...
    //and assuming you have established a connection to a knowledge graph
    //...
    //Construct an openCypher query - return the first 10 entities (whatever
    //they are...)
    var query = "MATCH (n) RETURN n LIMIT 10";//default limit is 100 if not specified
    //other examples...
    //query = "MATCH (a:Person) RETURN [a.name, a.age] ORDER BY a.age DESC LIMIT 50";
    //query = "MATCH (b:Person) RETURN { Xperson: { Xname: b.name, Xage: b.age } } ORDER BY b.name DESC";
    //query = "MATCH p = (c:Person)-[:HasCar]-() RETURN p ORDER BY c.name DESC";
    
    //Create a query filter
    //Note: OutputSpatialReference is currently ignored
    var kg_qf = new KnowledgeGraphQueryFilter()
    {
      QueryText = query
    };
    //Optionally - u can choose to include provenance in the results
    //(_if_ the KG has provenance - otherwise the query will fail)
    if (includeProvenanceIfPresent)
    {
      //see "Get Whether KG Supports Provenance" snippet
      if (KnowledgeGraphSupportsProvenance(kg))
      {
        //Only include if the KG has provenance
        kg_qf.ProvenanceBehavior =
          KnowledgeGraphProvenanceBehavior.Include;//default is exclude
      }
    }
    //submit the query - returns a KnowledgeGraphCursor
    using (var kg_rc = kg.SubmitQuery(kg_qf))
    {
      //wait for rows to be returned from the server
      //note the "await"...
      while (await kg_rc.WaitForRowsAsync())
      {
        //Rows have been retrieved - process this "batch"...
        while (kg_rc.MoveNext())
        {
          //Get the current KnowledgeGraphRow
          using (var graph_row = kg_rc.Current)
          {
            //Graph row is an array, process all returned values...
            var val_count = (int)graph_row.GetCount();
            for (int i = 0; i < val_count; i++)
            {
              var retval = graph_row[i];
              //Process row value (note: recursive)
              //See "Process a KnowledgeGraphRow Value" snippet
              ProcessKnowledgeGraphRowValue(retval);
            }
          }
        }
      }//WaitForRowsAsync
    }//SubmitQuery
    Requirements

    Target Platforms: Windows 11, Windows 10

    ArcGIS Pro version: 3.2 or higher.
    See Also