Class BaseForPhysicalOpSingleInputJoin

java.lang.Object

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

All Implemented Interfaces:

QueryPlanOperator, PhysicalOperator, PhysicalOperatorForLogicalOperator, UnaryPhysicalOp, UnaryPhysicalOpForLogicalOp

Direct Known Subclasses:

PhysicalOpBindJoinBRTPF, PhysicalOpBindJoinSPARQL, PhysicalOpIndexNestedLoopsJoin, PhysicalOpLookupJoinViaWrapper

public abstract class BaseForPhysicalOpSingleInputJoin
extends Object
implements UnaryPhysicalOpForLogicalOp

Base class for physical operators that implement some form of a join algorithm that consumes only one input and produces the other input as part of the algorithm itself.

Field Summary

Fields

Modifier and Type	Field	Description
protected final UnaryLogicalOp	lop

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	BaseForPhysicalOpSingleInputJoin(UnaryLogicalOp lop)	The given logical operator is expected to be either a LogicalOpGPAdd or a LogicalOpGPOptAdd.

Method Summary

Modifier and Type	Method	Description
UnaryLogicalOp	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.PhysicalOperator

visit

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

getExpectedVariables

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

createExecOp

Field Details

lop

protected final UnaryLogicalOp lop

Constructor Details

BaseForPhysicalOpSingleInputJoin

protected BaseForPhysicalOpSingleInputJoin(UnaryLogicalOp lop)

The given logical operator is expected to be either a LogicalOpGPAdd or a LogicalOpGPOptAdd.

Method Details

getLogicalOperator

public UnaryLogicalOp getLogicalOperator()

Description copied from interface: PhysicalOperatorForLogicalOperator

Returns the logical operator implemented by this physical operator.

Specified by:

getLogicalOperator in interface PhysicalOperatorForLogicalOperator

Specified by:

getLogicalOperator in interface UnaryPhysicalOpForLogicalOp