Class LogicalPlanWithNaryRootImpl

java.lang.Object

se.liu.ida.hefquin.engine.queryplan.base.impl.BaseForQueryPlan

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

All Implemented Interfaces:

QueryPlan, LogicalPlan, LogicalPlanWithNaryRoot

public class LogicalPlanWithNaryRootImpl
extends BaseForQueryPlan
implements LogicalPlanWithNaryRoot

Field Summary

Fields inherited from class se.liu.ida.hefquin.engine.queryplan.base.impl.BaseForQueryPlan

id

Constructor Summary

Constructors

Constructor	Description
LogicalPlanWithNaryRootImpl(NaryLogicalOp rootOp, Iterable<QueryPlanProperty> qpInfo, List<LogicalPlan> subPlans)	Constructor.
LogicalPlanWithNaryRootImpl(NaryLogicalOp rootOp, Iterable<QueryPlanProperty> qpInfo, LogicalPlan... subPlans)	Constructor.

Method Summary

Modifier and Type	Method	Description
ExpectedVariables	getExpectedVariables()	Returns the variables that can be expected in the solution mappings produced by this plan.
NaryLogicalOp	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).
Iterator<LogicalPlan>	getSubPlans()	Convenience method that always should return an iterator over the same sub-plans that can be accessed via LogicalPlan.getSubPlan(int).
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 se.liu.ida.hefquin.engine.queryplan.base.impl.BaseForQueryPlan

equals, getID, getQueryPlanningInfo, hashCode, hasQueryPlanningInfo

Methods inherited from class java.lang.Object

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

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

getID, getQueryPlanningInfo, hasQueryPlanningInfo, isSamePlan

Constructor Details

LogicalPlanWithNaryRootImpl

public LogicalPlanWithNaryRootImpl(NaryLogicalOp rootOp,
 Iterable<QueryPlanProperty> qpInfo,
 List<LogicalPlan> subPlans)

Constructor.

Parameters:

rootOp - - the root operator of the plan to be created

qpInfo - - query-planning-related properties for a QueryPlanningInfo object for the plan to be created; may be null, in which case the plan does not get such an object initially

subPlans - - the child plans of the plan to be created

LogicalPlanWithNaryRootImpl

public LogicalPlanWithNaryRootImpl(NaryLogicalOp rootOp,
 Iterable<QueryPlanProperty> qpInfo,
 LogicalPlan... subPlans)

Constructor.

Parameters:

rootOp - - the root operator of the plan to be created

qpInfo - - query-planning-related properties for a QueryPlanningInfo object for the plan to be created; may be null, in which case the plan does not get such an object initially

subPlans - - the child plans of the plan to be created

Method Details

getRootOperator

public NaryLogicalOp getRootOperator()

Description copied from interface: QueryPlan

Returns the root operator of this plan.

Specified by:

getRootOperator in interface LogicalPlan

Specified by:

getRootOperator in interface LogicalPlanWithNaryRoot

Specified by:

getRootOperator in interface QueryPlan

getExpectedVariables

public ExpectedVariables getExpectedVariables()

Description copied from interface: QueryPlan

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

Specified by:

getExpectedVariables in interface QueryPlan

getSubPlans

public Iterator<LogicalPlan> getSubPlans()

Description copied from interface: LogicalPlanWithNaryRoot

Convenience method that always should return an iterator over the same sub-plans that can be accessed via LogicalPlan.getSubPlan(int).

Specified by:

getSubPlans in interface LogicalPlanWithNaryRoot

numberOfSubPlans

public int numberOfSubPlans()

Description copied from interface: QueryPlan

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 QueryPlan

getSubPlan

public 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 LogicalPlan

Specified by:

getSubPlan in interface QueryPlan

Throws:

NoSuchElementException