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

Class LogicalPlanUtils

java.lang.Object

se.liu.ida.hefquin.engine.queryplan.logical.LogicalPlanUtils

public class LogicalPlanUtils
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LogicalPlanUtils.LogicalPlanCounter
static class	LogicalPlanUtils.SourceAssignmentChecker

Constructor Summary

Constructors

Constructor	Description
LogicalPlanUtils()

Method Summary

Modifier and Type	Method	Description
static int	countSubplans(LogicalPlan plan)
static LogicalPlan	createPlanWithBinaryJoin(LogicalPlan subPlan1, LogicalPlan subPlan2)	Creates a LogicalPlan with a LogicalOpJoin as root operator and the given plans as its two subplans.
static LogicalPlan	createPlanWithBinaryUnion(LogicalPlan subPlan1, LogicalPlan subPlan2)	Creates a LogicalPlan with a LogicalOpUnion as root operator and the given plans as its two subplans.
static LogicalPlan	createPlanWithMultiwayJoin(List<LogicalPlan> subPlans)	Creates a LogicalPlan with a LogicalOpMultiwayJoin as root operator and the given plans as its subplans.
static LogicalPlan	createPlanWithMultiwayJoin(LogicalPlan... subPlans)	Creates a LogicalPlan with a LogicalOpMultiwayJoin as root operator and the given plans as its subplans.
static LogicalPlan	createPlanWithMultiwayUnion(List<LogicalPlan> subPlans)	Creates a LogicalPlan with a LogicalOpMultiwayUnion as root operator and the given plans as its subplans.
static LogicalPlan	createPlanWithMultiwayUnion(LogicalPlan... subPlans)	Creates a LogicalPlan with a LogicalOpMultiwayUnion as root operator and the given plans as its subplans.
static LogicalPlan	createPlanWithSubPlans(LogicalOperator rootOp, List<LogicalPlan> subPlans)	Creates a LogicalPlan with the given operator as root operator and the plans given in the list as subplans.
static LogicalPlan	createPlanWithSubPlans(LogicalOperator rootOp, LogicalPlan... subPlans)	Creates a LogicalPlan with the given operator as root operator and the given plans as subplans.
static boolean	isSourceAssignment(LogicalPlan plan)	Returns true if the given logical plan is a source assignment.

Methods inherited from class java.lang.Object

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

Constructor Details

LogicalPlanUtils

public LogicalPlanUtils()

Method Details

createPlanWithBinaryJoin

public static LogicalPlan createPlanWithBinaryJoin(LogicalPlan subPlan1,
 LogicalPlan subPlan2)

Creates a LogicalPlan with a LogicalOpJoin as root operator and the given plans as its two subplans.

createPlanWithMultiwayJoin

public static LogicalPlan createPlanWithMultiwayJoin(LogicalPlan... subPlans)

Creates a LogicalPlan with a LogicalOpMultiwayJoin as root operator and the given plans as its subplans.

createPlanWithMultiwayJoin

public static LogicalPlan createPlanWithMultiwayJoin(List<LogicalPlan> subPlans)

Creates a LogicalPlan with a LogicalOpMultiwayJoin as root operator and the given plans as its subplans.

createPlanWithBinaryUnion

public static LogicalPlan createPlanWithBinaryUnion(LogicalPlan subPlan1,
 LogicalPlan subPlan2)

Creates a LogicalPlan with a LogicalOpUnion as root operator and the given plans as its two subplans.

createPlanWithMultiwayUnion

public static LogicalPlan createPlanWithMultiwayUnion(LogicalPlan... subPlans)

Creates a LogicalPlan with a LogicalOpMultiwayUnion as root operator and the given plans as its subplans.

createPlanWithMultiwayUnion

public static LogicalPlan createPlanWithMultiwayUnion(List<LogicalPlan> subPlans)

Creates a LogicalPlan with a LogicalOpMultiwayUnion as root operator and the given plans as its subplans.

createPlanWithSubPlans

public static LogicalPlan createPlanWithSubPlans(LogicalOperator rootOp,
 LogicalPlan... subPlans)

Creates a LogicalPlan with the given operator as root operator and the given plans as subplans.

createPlanWithSubPlans

public static LogicalPlan createPlanWithSubPlans(LogicalOperator rootOp,
 List<LogicalPlan> subPlans)

Creates a LogicalPlan with the given operator as root operator and the plans given in the list as subplans. If the given operator is a NullaryLogicalOp, then the given list may be null.

isSourceAssignment

public static boolean isSourceAssignment(LogicalPlan plan)

Returns true if the given logical plan is a source assignment.

countSubplans

public static int countSubplans(LogicalPlan plan)