Class GroupElem

All Implemented Interfaces:
Serializable, Cloneable, GraphPatternGroupable, QueryModelNode, VariableScopeChange

public class GroupElem extends AbstractQueryModelNode
A tuple operator that groups tuples that have a specific set of equivalent variable bindings, and that can apply aggregate functions on the grouped results.
Author:
David Huynh, Arjohn Kampman
See Also: