io.prestosql.operator.window

Class AbstractWindowFunctionSupplier

java.lang.Object

io.prestosql.operator.window.AbstractWindowFunctionSupplier

All Implemented Interfaces:

WindowFunctionSupplier

Direct Known Subclasses:

ReflectionWindowFunctionSupplier

public abstract class AbstractWindowFunctionSupplier
extends Object
implements WindowFunctionSupplier

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractWindowFunctionSupplier(Signature signature, String description)

Method Summary

Modifier and Type	Method and Description
WindowFunction	createWindowFunction(List<Integer> argumentChannels)
String	getDescription()
Signature	getSignature()
protected abstract WindowFunction	newWindowFunction(List<Integer> inputs) Create window function instance using the supplied arguments.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractWindowFunctionSupplier

protected AbstractWindowFunctionSupplier(Signature signature,
                                         String description)

Method Detail

getSignature

public final Signature getSignature()

Specified by:

getSignature in interface WindowFunctionSupplier

getDescription

public final String getDescription()

Specified by:

getDescription in interface WindowFunctionSupplier

createWindowFunction

public final WindowFunction createWindowFunction(List<Integer> argumentChannels)

Specified by:

createWindowFunction in interface WindowFunctionSupplier

newWindowFunction

protected abstract WindowFunction newWindowFunction(List<Integer> inputs)

Create window function instance using the supplied arguments. The inputs have already validated.