Interface LogicalPlan

All Superinterfaces:

QueryPlan

All Known Subinterfaces:

LogicalPlanWithBinaryRoot, LogicalPlanWithNaryRoot, LogicalPlanWithNullaryRoot, LogicalPlanWithUnaryRoot

All Known Implementing Classes:

LogicalPlanWithBinaryRootImpl, LogicalPlanWithNaryRootImpl, LogicalPlanWithNullaryRootImpl, LogicalPlanWithUnaryRootImpl

public interface LogicalPlan
extends QueryPlan

Method Summary

Modifier and Type	Method	Description
LogicalOperator	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).

Methods inherited from interface se.liu.ida.hefquin.engine.queryplan.base.QueryPlan

getExpectedVariables, getID, getQueryPlanningInfo, hasQueryPlanningInfo, isSamePlan, numberOfSubPlans

Method Details

getRootOperator

LogicalOperator getRootOperator()

Description copied from interface: QueryPlan

Returns the root operator of this plan.

Specified by:

getRootOperator in interface QueryPlan

getSubPlan

LogicalPlan getSubPlan(int i)
                throws NoSuchElementException

Description copied from interface: QueryPlan

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 QueryPlan

Throws:

NoSuchElementException