com.hp.hpl.jena.sparql.algebra.op
Class OpTopN

java.lang.Object
  com.hp.hpl.jena.sparql.util.PrintSerializableBase
      com.hp.hpl.jena.sparql.algebra.op.OpBase
          com.hp.hpl.jena.sparql.algebra.op.Op1
              com.hp.hpl.jena.sparql.algebra.op.OpModifier
                  com.hp.hpl.jena.sparql.algebra.op.OpTopN

All Implemented Interfaces:

Op, Named, PrintSerializable, Printable

public class OpTopN
extends OpModifier

Top N from a stream of items - for small N, better than ORDER BY + LIMIT N

Constructor Summary

OpTopN(Op subOp, int N, java.util.List<SortCondition> conditions)

Method Summary

Op	apply(Transform transform, Op subOp)
Op	copy(Op subOp)
boolean	equalTo(Op other, NodeIsomorphismMap labelMap)
java.util.List<SortCondition>	getConditions()
int	getLimit()
java.lang.String	getName()
int	hashCode()
void	visit(OpVisitor opVisitor)

Methods inherited from class com.hp.hpl.jena.sparql.algebra.op.OpModifier

removeModifiers

Methods inherited from class com.hp.hpl.jena.sparql.algebra.op.Op1

getSubOp

Methods inherited from class com.hp.hpl.jena.sparql.algebra.op.OpBase

equals, output, output

Methods inherited from class com.hp.hpl.jena.sparql.util.PrintSerializableBase

toString, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.hp.hpl.jena.sparql.util.PrintSerializable

toString

Constructor Detail

OpTopN

public OpTopN(Op subOp,
              int N,
              java.util.List<SortCondition> conditions)

Method Detail

getConditions

public java.util.List<SortCondition> getConditions()

getLimit

public int getLimit()

getName

public java.lang.String getName()

visit

public void visit(OpVisitor opVisitor)

copy

public Op copy(Op subOp)

Specified by:

copy in class Op1

apply

public Op apply(Transform transform,
                Op subOp)

Specified by:

apply in class Op1

hashCode

public int hashCode()

Specified by:

hashCode in class OpBase

equalTo

public boolean equalTo(Op other,
                       NodeIsomorphismMap labelMap)

Specified by:

equalTo in interface Op

Specified by:

equalTo in class OpBase