Package org.apache.druid.query.operator.window.ranking

Class WindowRowNumberProcessor

java.lang.Object

org.apache.druid.query.operator.window.ranking.WindowRowNumberProcessor

All Implemented Interfaces:

Processor

public class WindowRowNumberProcessor
extends Object
implements Processor

Constructor Summary

Constructors

Constructor	Description
WindowRowNumberProcessor(String outputColumn)

Method Summary

Modifier and Type	Method	Description
String	getOutputColumn()
RowsAndColumns	process(RowsAndColumns incomingPartition)	Applies the logic of the processor to a RowsAndColumns object
String	toString()
boolean	validateEquivalent(Processor otherProcessor)	Validates the equivalence of the Processors.

Methods inherited from class java.lang.Object

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

Constructor Detail

WindowRowNumberProcessor

public WindowRowNumberProcessor(String outputColumn)

Method Detail

getOutputColumn

public String getOutputColumn()

process

public RowsAndColumns process(RowsAndColumns incomingPartition)

Description copied from interface: Processor

Applies the logic of the processor to a RowsAndColumns object

Specified by:

process in interface Processor

Parameters:

incomingPartition - the incoming RowsAndColumns object

Returns:

the transformed RowsAndColumns object

validateEquivalent

public boolean validateEquivalent(Processor otherProcessor)

Description copied from interface: Processor

Validates the equivalence of the Processors. This is similar to @{code .equals} but is its own method so that it can ignore certain fields that would be important for a true equality check. Namely, two Processors defined the same way but with different output names can be considered equivalent even though they are not equal.

This primarily exists to simplify tests, where this equivalence can be used to validate that the Processors created by the SQL planner are actually equivalent to what we expect without needing to be overly dependent on how the planner names the output columns

Specified by:

validateEquivalent in interface Processor

Parameters:

otherProcessor - the processor to test equivalence of

Returns:

boolean identifying if these processors should be considered equivalent to each other.

toString

public String toString()

Overrides:

toString in class Object