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

Class BaseForPhysicalOps

java.lang.Object

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

All Implemented Interfaces:

PhysicalOperator

Direct Known Subclasses:

BaseForPhysicalOpBinaryJoin, BaseForPhysicalOpMultiwayJoin, BaseForPhysicalOpMultiwayLeftJoin, BaseForPhysicalOpSingleInputJoin, PhysicalOpBinaryUnion, PhysicalOpFilter, PhysicalOpGlobalToLocal, PhysicalOpHashRJoin, PhysicalOpLocalToGlobal, PhysicalOpMultiwayUnion, PhysicalOpParallelMultiLeftJoin, PhysicalOpRequest

public abstract class BaseForPhysicalOps
extends Object
implements PhysicalOperator

Top-level base class for all implementations of PhysicalOperator. This base class handles the creation of a unique ID per operator.

Field Summary

Fields

Modifier and Type	Field	Description
protected final int	id

Constructor Summary

Constructors

Constructor	Description
BaseForPhysicalOps()

Method Summary

Modifier and Type	Method	Description
int	getID()	Returns an identifier of this operator, which should be unique for all the operators within the same plan (no matter what type of operator they are).

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.PhysicalOperator

createExecOp, getExpectedVariables, visit

Field Details

id

protected final int id

Constructor Details

BaseForPhysicalOps

public BaseForPhysicalOps()

Method Details

getID

public int getID()

Description copied from interface: PhysicalOperator

Returns an identifier of this operator, which should be unique for all the operators within the same plan (no matter what type of operator they are).

Specified by:

getID in interface PhysicalOperator