Class LogicalOpFixedSolMap

java.lang.Object

se.liu.ida.hefquin.engine.queryplan.logical.impl.BaseForLogicalOps

se.liu.ida.hefquin.engine.queryplan.logical.impl.LogicalOpFixedSolMap

All Implemented Interfaces:

QueryPlanOperator, LogicalOperator, NullaryLogicalOp

public class LogicalOpFixedSolMap
extends BaseForLogicalOps
implements NullaryLogicalOp

A logical operator that returns a given solution mapping.

Field Summary

Fields

Modifier and Type	Field	Description
protected final ExpectedVariables	expectedVars
protected final SolutionMapping	sm

Fields inherited from class se.liu.ida.hefquin.engine.queryplan.logical.impl.BaseForLogicalOps

mayReduce

Constructor Summary

Constructors

Constructor	Description
LogicalOpFixedSolMap(SolutionMapping sm)

Method Summary

Modifier and Type	Method	Description
boolean	equals(Object o)
ExpectedVariables	getExpectedVariables(ExpectedVariables... inputVars)	Returns the variables that can be expected in the solution mappings produced by this operator in the case that the input(s) to this operator contain solutions mappings with the given set(s) of variables.
SolutionMapping	getSolutionMapping()
int	hashCode()
String	toString()
void	visit(LogicalPlanVisitor visitor)

Methods inherited from class se.liu.ida.hefquin.engine.queryplan.logical.impl.BaseForLogicalOps

mayReduce

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.logical.LogicalOperator

mayReduce

Field Details

sm

protected final SolutionMapping sm

expectedVars

protected final ExpectedVariables expectedVars

Constructor Details

LogicalOpFixedSolMap

public LogicalOpFixedSolMap(SolutionMapping sm)

Method Details

getSolutionMapping

public SolutionMapping getSolutionMapping()

visit

public void visit(LogicalPlanVisitor visitor)

Specified by:

visit in interface LogicalOperator

getExpectedVariables

public ExpectedVariables getExpectedVariables(ExpectedVariables... inputVars)

Description copied from interface: QueryPlanOperator

Returns the variables that can be expected in the solution mappings produced by this operator in the case that the input(s) to this operator contain solutions mappings with the given set(s) of variables. The number of ExpectedVariables objects passed 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:

getExpectedVariables in interface QueryPlanOperator

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