Package org.apache.flink.table.planner.plan.nodes.exec.processor.utils

Class InputOrderCalculator

java.lang.Object

org.apache.flink.table.planner.plan.nodes.exec.processor.utils.InputPriorityGraphGenerator

org.apache.flink.table.planner.plan.nodes.exec.processor.utils.InputOrderCalculator

@Internal
public class InputOrderCalculator
extends InputPriorityGraphGenerator

Subclass of the InputPriorityGraphGenerator.

This class only calculates the input order for the given boundary nodes and will throw exception when a conflict is detected.

Field Summary

Fields inherited from class org.apache.flink.table.planner.plan.nodes.exec.processor.utils.InputPriorityGraphGenerator

graph

Constructor Summary

Constructors

Constructor	Description
InputOrderCalculator(ExecNode<?> root, Set<ExecNode<?>> boundaries, InputProperty.DamBehavior safeDamBehavior)	Create a InputOrderCalculator for the given ExecNode sub-graph.

Method Summary

Modifier and Type	Method	Description
Map<ExecNode<?>,Integer>	calculate()
protected void	resolveInputPriorityConflict(ExecNode<?> node, int higherInput, int lowerInput)

Methods inherited from class org.apache.flink.table.planner.plan.nodes.exec.processor.utils.InputPriorityGraphGenerator

createTopologyGraph

Methods inherited from class java.lang.Object

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

Constructor Details

InputOrderCalculator

public InputOrderCalculator(ExecNode<?> root,
 Set<ExecNode<?>> boundaries,
 InputProperty.DamBehavior safeDamBehavior)

Create a InputOrderCalculator for the given ExecNode sub-graph.

Parameters:

root - the output node of the sub-graph

boundaries - the first layer of nodes on the input side of the sub-graph

safeDamBehavior - when checking for conflicts we'll ignore the edges with InputProperty.DamBehavior stricter or equal than this

Method Details

calculate

public Map<ExecNode<?>,Integer> calculate()

resolveInputPriorityConflict

protected void resolveInputPriorityConflict(ExecNode<?> node,
 int higherInput,
 int lowerInput)

Specified by:

resolveInputPriorityConflict in class InputPriorityGraphGenerator