Package se.liu.ida.hefquin.engine.queryplan.physical.impl

Class PhysicalPlanWithBinaryRootImpl

java.lang.Object

se.liu.ida.hefquin.engine.queryplan.physical.impl.PhysicalPlanWithBinaryRootImpl

All Implemented Interfaces:

PhysicalPlan, PhysicalPlanWithBinaryRoot

public class PhysicalPlanWithBinaryRootImpl
extends Object
implements PhysicalPlanWithBinaryRoot

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PhysicalPlanWithBinaryRootImpl(BinaryPhysicalOp rootOp, PhysicalPlan subPlan1, PhysicalPlan subPlan2)	Instead of creating such a plan directly using this constructor, use PhysicalPlanFactory.

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
ExpectedVariables	getExpectedVariables()	Returns the variables that can be expected in the solution mappings produced by this plan.
BinaryPhysicalOp	getRootOperator()	Returns the root operator of this plan.
PhysicalPlan	getSubPlan(int i)	Returns the i-th sub-plan of this plan, where i starts at index 0 (zero).
PhysicalPlan	getSubPlan1()	Convenience method that always should return the same as what is returned by calling PhysicalPlan.getSubPlan(int) with a value of 0.
PhysicalPlan	getSubPlan2()	Convenience method that always should return the same as what is returned by calling PhysicalPlan.getSubPlan(int) with a value of 1.
int	hashCode()
int	numberOfSubPlans()	Returns the number of sub-plans that this plan has (considering sub-plans that are direct children of the root operator of this plan).

Methods inherited from class java.lang.Object

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

Constructor Details

PhysicalPlanWithBinaryRootImpl

protected PhysicalPlanWithBinaryRootImpl(BinaryPhysicalOp rootOp,
 PhysicalPlan subPlan1,
 PhysicalPlan subPlan2)

Instead of creating such a plan directly using this constructor, use PhysicalPlanFactory.

Method Details

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getRootOperator

public BinaryPhysicalOp getRootOperator()

Description copied from interface: PhysicalPlan

Returns the root operator of this plan.

Specified by:

getRootOperator in interface PhysicalPlan

Specified by:

getRootOperator in interface PhysicalPlanWithBinaryRoot

getExpectedVariables

public ExpectedVariables getExpectedVariables()

Description copied from interface: PhysicalPlan

Returns the variables that can be expected in the solution mappings produced by this plan.

Specified by:

getExpectedVariables in interface PhysicalPlan

getSubPlan1

public PhysicalPlan getSubPlan1()

Description copied from interface: PhysicalPlanWithBinaryRoot

Convenience method that always should return the same as what is returned by calling PhysicalPlan.getSubPlan(int) with a value of 0.

Specified by:

getSubPlan1 in interface PhysicalPlanWithBinaryRoot

getSubPlan2

public PhysicalPlan getSubPlan2()

Description copied from interface: PhysicalPlanWithBinaryRoot

Convenience method that always should return the same as what is returned by calling PhysicalPlan.getSubPlan(int) with a value of 1.

Specified by:

getSubPlan2 in interface PhysicalPlanWithBinaryRoot

numberOfSubPlans

public int numberOfSubPlans()

Description copied from interface: PhysicalPlan

Returns the number of sub-plans that this plan has (considering sub-plans that are direct children of the root operator of this plan).

Specified by:

numberOfSubPlans in interface PhysicalPlan

getSubPlan

public PhysicalPlan getSubPlan(int i)
                        throws NoSuchElementException

Description copied from interface: PhysicalPlan

Returns the i-th sub-plan of this plan, where i starts at index 0 (zero). If the plan has fewer sub-plans (or no sub-plans at all), then a NoSuchElementException will be thrown.

Specified by:

getSubPlan in interface PhysicalPlan

Throws:

NoSuchElementException