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

Interface PhysicalPlanWithUnaryRoot

All Superinterfaces:

PhysicalPlan

All Known Implementing Classes:

PhysicalPlanWithUnaryRootImpl

public interface PhysicalPlanWithUnaryRoot
extends PhysicalPlan

Method Summary

Modifier and Type	Method	Description
UnaryPhysicalOp	getRootOperator()	Returns the root operator of this plan.
PhysicalPlan	getSubPlan()	Convenience method that always should return the same as what is returned by calling PhysicalPlan.getSubPlan(int) with a value of 0.

Methods inherited from interface se.liu.ida.hefquin.engine.queryplan.physical.PhysicalPlan

getExpectedVariables, getSubPlan, numberOfSubPlans

Method Details

getRootOperator

UnaryPhysicalOp getRootOperator()

Description copied from interface: PhysicalPlan

Returns the root operator of this plan.

Specified by:

getRootOperator in interface PhysicalPlan

getSubPlan

PhysicalPlan getSubPlan()

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