Package org.eclipse.rdf4j.federated.algebra

Class EmptyNUnion

java.lang.Object

org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

org.eclipse.rdf4j.federated.algebra.NTuple

org.eclipse.rdf4j.federated.algebra.EmptyNUnion

All Implemented Interfaces:

Serializable, Cloneable, EmptyResult, QueryRef, GraphPatternGroupable, QueryModelNode, TupleExpr, VariableScopeChange

public class EmptyNUnion
extends NTuple
implements EmptyResult

Algebra construct representing an empty union.

Author:

Andreas Schwarte

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.eclipse.rdf4j.federated.algebra.NTuple

args, queryInfo

Constructor Summary

Constructors

Constructor	Description
EmptyNUnion(List<TupleExpr> args, QueryInfo queryInfo)

Method Summary

Methods inherited from class org.eclipse.rdf4j.federated.algebra.NTuple

clone, getArg, getArgs, getAssuredBindingNames, getBindingNames, getNumberOfArguments, getQueryInfo, replaceChildNode, visit, visitChildren

Methods inherited from class org.eclipse.rdf4j.query.algebra.AbstractQueryModelNode

getCardinality, getCostEstimate, getParentNode, getResultSizeActual, getResultSizeEstimate, getSignature, getTotalTimeNanosActual, isCardinalitySet, isGraphPatternGroup, isVariableScopeChange, nullEquals, replaceNodeInList, replaceWith, resetCardinality, setCardinality, setCostEstimate, setGraphPatternGroup, setParentNode, setResultSizeActual, setResultSizeEstimate, setTotalTimeNanosActual, setVariableScopeChange, shouldCacheCardinality, toString

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

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

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

Constructor Details

EmptyNUnion

public EmptyNUnion(List<TupleExpr> args,
 QueryInfo queryInfo)