org.apache.flink.optimizer.traversals

Class StepFunctionValidator

java.lang.Object

org.apache.flink.optimizer.traversals.StepFunctionValidator

All Implemented Interfaces:

Visitor<Operator<?>>

public class StepFunctionValidator
extends Object
implements Visitor<Operator<?>>

A traversal that checks if the Workset of a delta iteration is used in the data flow of its step function.

Constructor Summary

Constructors

Constructor and Description
StepFunctionValidator()

Method Summary

Modifier and Type	Method and Description
boolean	hasFoundWorkset()
void	postVisit(Operator<?> visitable)
boolean	preVisit(Operator<?> visitable)

Methods inherited from class java.lang.Object

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

Constructor Detail

StepFunctionValidator

public StepFunctionValidator()

Method Detail

preVisit

public boolean preVisit(Operator<?> visitable)

Specified by:

preVisit in interface Visitor<Operator<?>>

Returns:

True, if the traversal should continue, false otherwise.

postVisit

public void postVisit(Operator<?> visitable)

Specified by:

postVisit in interface Visitor<Operator<?>>

hasFoundWorkset

public boolean hasFoundWorkset()