Module org.apache.jena.arq

Package org.apache.jena.sparql.algebra.optimize

Class VariableUsageTracker

java.lang.Object

org.apache.jena.sparql.algebra.optimize.VariableUsageTracker

public class VariableUsageTracker
extends Object

Tracker for variable usage

Constructor Summary

Constructors

Constructor	Description
VariableUsageTracker()

Method Summary

Modifier and Type	Method	Description
void	decrement(String var)
void	decrement(Collection<Var> vars)
void	decrement(Var var)
int	getUsageCount(String var)
int	getUsageCount(Var var)
void	increment(String var)
void	increment(Collection<Var> vars)
void	increment(Var var)
void	pop()
void	push()

Methods inherited from class java.lang.Object

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

Constructor Details

VariableUsageTracker

public VariableUsageTracker()

Method Details

push

public void push()

pop

public void pop()

increment

public void increment(Collection<Var> vars)

increment

public void increment(String var)

increment

public void increment(Var var)

decrement

public void decrement(Collection<Var> vars)

decrement

public void decrement(String var)

decrement

public void decrement(Var var)

getUsageCount

public int getUsageCount(String var)

getUsageCount

public int getUsageCount(Var var)