org.drools.core.time

Class Interval

java.lang.Object

org.drools.core.time.Interval

All Implemented Interfaces:

Cloneable

public class Interval
extends Object
implements Cloneable

A class to represent a time interval. Specially useful to calculate time distance between events constrained by temporal constraints. If the interval is open, i.e., from -infinitum to +infinitum, the representation is created by using lowerBound = Long.MIN_VALUE and upperBound = Long.MAX_VALUE.

Field Summary

Fields

Modifier and Type	Field and Description
static long	MAX
static long	MIN

Constructor Summary

Constructors

Constructor and Description
Interval()
Interval(long lowerBound, long upperBound)

Method Summary

Modifier and Type	Method and Description
void	add(Interval another) Calculates the path addition of this interval with another interval.
Interval	clone()
boolean	equals(Object obj)
long	getLowerBound()
long	getUpperBound()
int	hashCode()
void	intersect(Interval another) Calculates the value of the intersection between this Interval and another interval.
void	setLowerBound(long lowerBound)
void	setUpperBound(long upperBound)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

MIN

public static final long MIN

See Also:

Constant Field Values

MAX

public static final long MAX

See Also:

Constant Field Values

Constructor Detail

Interval

public Interval()

Interval

public Interval(long lowerBound,
                long upperBound)

Method Detail

intersect

public void intersect(Interval another)

Calculates the value of the intersection between this Interval and another interval. This is given by the following rule: lowerBound = max( this.lowerBound, another.lowerBound ) upperBound = min( this.upperBound, another.upperBound )

Parameters:

another - the other interval to calculate the intersection with.

add

public void add(Interval another)

Calculates the path addition of this interval with another interval. This is given by the following rule: lowerBound = ( this.lowerBound == MIN || another.lowerBound == MIN ) ? MIN : this.lowerBound+another.lowerBound; upperBound = ( this.upperBound == MAX || another.upperBound == MAX ) ? MAX : this.upperBound+another.upperBound;

Parameters:

another - the other interval to add into this interval

getLowerBound

public long getLowerBound()

setLowerBound

public void setLowerBound(long lowerBound)

getUpperBound

public long getUpperBound()

setUpperBound

public void setUpperBound(long upperBound)

clone

public Interval clone()

Overrides:

clone in class Object

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object