org.apache.drill.exec.physical.config

Class TopN

java.lang.Object

org.apache.drill.exec.physical.base.AbstractBase

org.apache.drill.exec.physical.base.AbstractSingle

org.apache.drill.exec.physical.config.Sort

org.apache.drill.exec.physical.config.TopN

All Implemented Interfaces:

Iterable<PhysicalOperator>, GraphValue<PhysicalOperator>, PhysicalOperator

public class TopN
extends Sort

Field Summary

Fields inherited from class org.apache.drill.exec.physical.config.Sort

orderings, reverse

Fields inherited from class org.apache.drill.exec.physical.base.AbstractSingle

child

Fields inherited from class org.apache.drill.exec.physical.base.AbstractBase

INIT_ALLOCATION, initialAllocation, MAX_ALLOCATION, maxAllocation

Constructor Summary

Constructors

Constructor and Description
TopN(PhysicalOperator child, List<Order.Ordering> orderings, boolean reverse, int limit)

Method Summary

Methods

Modifier and Type	Method and Description
<T,X,E extends Throwable> T	accept(PhysicalVisitor<T,X,E> physicalVisitor, X value) Provides capability to build a set of output based on traversing a query graph tree.
int	getLimit()
protected PhysicalOperator	getNewWithChild(PhysicalOperator child)
int	getOperatorType()
List<Order.Ordering>	getOrderings()
boolean	getReverse()

Methods inherited from class org.apache.drill.exec.physical.config.Sort

getSVMode

Methods inherited from class org.apache.drill.exec.physical.base.AbstractSingle

getChild, getNewWithChildren, iterator

Methods inherited from class org.apache.drill.exec.physical.base.AbstractBase

accept, getCost, getInitialAllocation, getMaxAllocation, getOperatorId, getUserName, isBufferedOperator, isExecutable, setCost, setMaxAllocation, setOperatorId

Methods inherited from class java.lang.Object

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

Constructor Detail

TopN

public TopN(PhysicalOperator child,
    List<Order.Ordering> orderings,
    boolean reverse,
    int limit)

Method Detail

getOrderings

public List<Order.Ordering> getOrderings()

Overrides:

getOrderings in class Sort

getReverse

public boolean getReverse()

Overrides:

getReverse in class Sort

getLimit

public int getLimit()

accept

public <T,X,E extends Throwable> T accept(PhysicalVisitor<T,X,E> physicalVisitor,
                                 X value)
         throws E extends Throwable

Description copied from interface: PhysicalOperator

Provides capability to build a set of output based on traversing a query graph tree.

Specified by:

accept in interface PhysicalOperator

Overrides:

accept in class Sort

Returns:

Throws:

E extends Throwable

getNewWithChild

protected PhysicalOperator getNewWithChild(PhysicalOperator child)

Overrides:

getNewWithChild in class Sort

getOperatorType

public int getOperatorType()

Specified by:

getOperatorType in interface PhysicalOperator

Overrides:

getOperatorType in class Sort