Class BaseForPhysicalOpMultiwayJoin

java.lang.Object

se.liu.ida.hefquin.engine.queryplan.physical.impl.BaseForPhysicalOpMultiwayJoin

All Implemented Interfaces:

QueryPlanOperator, NaryPhysicalOp, NaryPhysicalOpForLogicalOp, PhysicalOperator, PhysicalOperatorForLogicalOperator

public abstract class BaseForPhysicalOpMultiwayJoin
extends Object
implements NaryPhysicalOpForLogicalOp

Base class for physical operators that implement some form of a multi-way join algorithm.

Field Summary

Fields

Modifier and Type	Field	Description
protected final LogicalOpMultiwayJoin	lop

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BaseForPhysicalOpMultiwayJoin(LogicalOpMultiwayJoin lop)

Method Summary

Modifier and Type	Method	Description
LogicalOpMultiwayJoin	getLogicalOperator()	Returns the logical operator implemented by this physical operator.

Methods inherited from class java.lang.Object

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

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

createExecOp

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

visit

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

getExpectedVariables

Field Details

lop

protected final LogicalOpMultiwayJoin lop

Constructor Details

BaseForPhysicalOpMultiwayJoin

protected BaseForPhysicalOpMultiwayJoin(LogicalOpMultiwayJoin lop)

Method Details

getLogicalOperator

public LogicalOpMultiwayJoin getLogicalOperator()

Description copied from interface: PhysicalOperatorForLogicalOperator

Returns the logical operator implemented by this physical operator.

Specified by:

getLogicalOperator in interface NaryPhysicalOpForLogicalOp

Specified by:

getLogicalOperator in interface PhysicalOperatorForLogicalOperator