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

Class LogicalPlanWithBinaryRootImpl

java.lang.Object

se.liu.ida.hefquin.engine.queryplan.logical.impl.LogicalPlanWithBinaryRootImpl

All Implemented Interfaces:

LogicalPlan, LogicalPlanWithBinaryRoot

public class LogicalPlanWithBinaryRootImpl
extends Object
implements LogicalPlanWithBinaryRoot

Constructor Summary

Constructors

Constructor	Description
LogicalPlanWithBinaryRootImpl(BinaryLogicalOp rootOp, LogicalPlan subPlan1, LogicalPlan subPlan2)

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.
BinaryLogicalOp	getRootOperator()	Returns the root operator of this plan.
LogicalPlan	getSubPlan(int i)	Returns the i-th sub-plan of this plan, where i starts at index 0 (zero).
LogicalPlan	getSubPlan1()	Convenience method that always should return the same as what is returned by calling LogicalPlan.getSubPlan(int) with a value of 0.
LogicalPlan	getSubPlan2()	Convenience method that always should return the same as what is returned by calling LogicalPlan.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

LogicalPlanWithBinaryRootImpl

public LogicalPlanWithBinaryRootImpl(BinaryLogicalOp rootOp,
 LogicalPlan subPlan1,
 LogicalPlan subPlan2)

Method Details

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getRootOperator

public BinaryLogicalOp getRootOperator()

Description copied from interface: LogicalPlan

Returns the root operator of this plan.

Specified by:

getRootOperator in interface LogicalPlan

Specified by:

getRootOperator in interface LogicalPlanWithBinaryRoot

getExpectedVariables

public ExpectedVariables getExpectedVariables()

Description copied from interface: LogicalPlan

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

Specified by:

getExpectedVariables in interface LogicalPlan

getSubPlan1

public LogicalPlan getSubPlan1()

Description copied from interface: LogicalPlanWithBinaryRoot

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

Specified by:

getSubPlan1 in interface LogicalPlanWithBinaryRoot

getSubPlan2

public LogicalPlan getSubPlan2()

Description copied from interface: LogicalPlanWithBinaryRoot

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

Specified by:

getSubPlan2 in interface LogicalPlanWithBinaryRoot

numberOfSubPlans

public int numberOfSubPlans()

Description copied from interface: LogicalPlan

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 LogicalPlan

getSubPlan

public LogicalPlan getSubPlan(int i)
                       throws NoSuchElementException

Description copied from interface: LogicalPlan

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 LogicalPlan

Throws:

NoSuchElementException