org.eclipse.rdf4j.query.algebra

Interface AggregateOperator

All Superinterfaces:

Cloneable, QueryModelNode, Serializable, ValueExpr

All Known Implementing Classes:

AbstractAggregateOperator, AggregateOperatorBase, Avg, Count, GroupConcat, Max, Min, Sample, Sum

public interface AggregateOperator
extends ValueExpr

An operator that returns aggregates values.

Author:

David Huynh

Method Summary

Modifier and Type	Method and Description
AggregateOperator	clone() Returns a (deep) clone of this query model node.
boolean	isDistinct()
void	setDistinct(boolean distinct)

Methods inherited from interface org.eclipse.rdf4j.query.algebra.QueryModelNode

equals, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, replaceChildNode, replaceWith, setCostEstimate, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, toString, visit, visitChildren

Method Detail

isDistinct

boolean isDistinct()

setDistinct

void setDistinct(boolean distinct)

clone

AggregateOperator clone()

Description copied from interface: QueryModelNode

Returns a (deep) clone of this query model node. This method recursively clones the entire node tree, starting from this nodes.

Specified by:

clone in interface QueryModelNode

Specified by:

clone in interface ValueExpr

Returns:

A deep clone of this query model node.