EmptyNUnion (Eclipse RDF4J 4.3.2)

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 Detail

EmptyNUnion

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