Class PhysicalOpDuplicateRemoval

java.lang.Object

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

All Implemented Interfaces:

QueryPlanOperator, PhysicalOperator, PhysicalOperatorForLogicalOperator, UnaryPhysicalOp, UnaryPhysicalOpForLogicalOp

public class PhysicalOpDuplicateRemoval
extends Object
implements UnaryPhysicalOpForLogicalOp

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PhysicalOpDuplicateRemoval.Factory

Field Summary

Fields

Modifier and Type	Field	Description
protected static final PhysicalOpDuplicateRemoval.Factory	factory

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	PhysicalOpDuplicateRemoval()

Method Summary

Modifier and Type	Method	Description
UnaryExecutableOp	createExecOp(boolean collectExceptions, QueryPlanningInfo qpInfo, ExpectedVariables... inputVars)	Creates and returns the executable operator to be used for this physical operator.
boolean	equals(Object o)
static PhysicalOpFactory	getFactory()
static PhysicalOpDuplicateRemoval	getInstance()
LogicalOpDedup	getLogicalOperator()	Returns the logical operator implemented by this physical operator.
int	hashCode()
String	toString()
void	visit(PhysicalPlanVisitor visitor)

Methods inherited from class java.lang.Object

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

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

getExpectedVariables

Field Details

factory

protected static final PhysicalOpDuplicateRemoval.Factory factory

Constructor Details

PhysicalOpDuplicateRemoval

protected PhysicalOpDuplicateRemoval()

Method Details

getFactory

public static PhysicalOpFactory getFactory()

visit

public void visit(PhysicalPlanVisitor visitor)

Specified by:

visit in interface PhysicalOperator

createExecOp

public UnaryExecutableOp createExecOp(boolean collectExceptions,
 QueryPlanningInfo qpInfo,
 ExpectedVariables... inputVars)

Description copied from interface: PhysicalOperator

Creates and returns the executable operator to be used for this physical operator. The implementation of this method has to create a new ExecutableOperator object each time it is called. The given QueryPlanningInfo object is passed to the created executable operator (to be available via the ExecutableOperator.getQueryPlanningInfo() method) and should be taken from the physical plan whose root operator is this physical operator. The given collectExceptions flag is passed to the executable operator and determines whether that operator collects its exceptions (see ExecutableOperator.getExceptionsCaughtDuringExecution()) or throws them immediately. The number of ExpectedVariables objects passed as arguments to this method must be in line with the degree of this operator (e.g., for a unary operator, exactly one such object must be passed).

Specified by:

createExecOp in interface PhysicalOperator

Specified by:

createExecOp in interface UnaryPhysicalOp

getLogicalOperator

public LogicalOpDedup 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

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object

getInstance

public static PhysicalOpDuplicateRemoval getInstance()