de.jaret.util.date
Class IntervalImpl

java.lang.Object
  de.jaret.util.misc.PropertyObservableBase
      de.jaret.util.date.IntervalImpl

All Implemented Interfaces:

Interval, PropertyObservable, PropertyChangeListener, EventListener

Direct Known Subclasses:

Event

public class IntervalImpl
extends PropertyObservableBase
implements Interval, PropertyChangeListener

Simple Implementation of an interval. Listens on property changes on the begin and end date. However it is better practice to use the JaretDate like an immutable type most of the time.

Version:

$Id: IntervalImpl.java 845 2009-02-22 18:28:44Z kliem $

Author:

Peter Kliem

Field Summary

protected JaretDate	_begin begin date.
protected JaretDate	_end end date.

Fields inherited from class de.jaret.util.misc.PropertyObservableBase

_propertyChangeSupport

Fields inherited from interface de.jaret.util.date.Interval

PROP_BEGIN, PROP_END

Constructor Summary

IntervalImpl()
Default constructor leaving the interval uninitialized.

IntervalImpl(JaretDate from, JaretDate to)
Construct a date with begin and end.

Method Summary

boolean	contains(Interval interval) Checks whether an interval is completely contained in the interval.
boolean	contains(JaretDate date) Checks whether a given date is contained in the interval.
static boolean	containsNonIncluding(Interval interval, JaretDate date) Check whether a given date is contained in the interval not including the exact boundaries.
static boolean	containsStatic(Interval interval, JaretDate date) Static helper, check whether a dat eis included in an interval.
JaretDate	getBegin() Retrieve the begin timestamp of the interval.
JaretDate	getEnd() Retrieve the end timestamp of the interval.
int	getSeconds() Retrieve the length of the interval in seconds.
static boolean	intersect(Interval i1, Interval i2) Helper method determing if two intervals intersect.
static boolean	intersectNonIncluding(Interval i1, Interval i2) Static helper method, check intersection not including the interval edges.
boolean	intersects(Interval interval) Check whether this intersects the given interval.
void	propertyChange(PropertyChangeEvent evt) check begin and end instances.
void	setBegin(JaretDate begin) Set the begin timestamp of the interval.
void	setEnd(JaretDate end) Set the end timestamp of the interval.
String	toString()

Methods inherited from class de.jaret.util.misc.PropertyObservableBase

addPropertyChangeListener, firePropertyChange, isRealModification, removePropertyChangeListener

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface de.jaret.util.misc.PropertyObservable

addPropertyChangeListener, removePropertyChangeListener

Field Detail

_begin

protected JaretDate _begin

begin date.

_end

protected JaretDate _end

end date.

Constructor Detail

IntervalImpl

public IntervalImpl(JaretDate from,
                    JaretDate to)

Construct a date with begin and end.

Parameters:

from - begin date (will be copied)

to - end date (will be copied)

IntervalImpl

public IntervalImpl()

Default constructor leaving the interval uninitialized.

Method Detail

getBegin

public JaretDate getBegin()

Retrieve the begin timestamp of the interval.

Specified by:

getBegin in interface Interval

Returns:

the begin timestamp of the interval.

getEnd

public JaretDate getEnd()

Retrieve the end timestamp of the interval.

Specified by:

getEnd in interface Interval

Returns:

the end timestamp of the interval.

setBegin

public void setBegin(JaretDate begin)

Set the begin timestamp of the interval.

Specified by:

setBegin in interface Interval

Parameters:

begin - the begin timestamp to be set.

setEnd

public void setEnd(JaretDate end)

Set the end timestamp of the interval.

Specified by:

setEnd in interface Interval

Parameters:

end - the end timestamp to be set.

contains

public boolean contains(JaretDate date)

Checks whether a given date is contained in the interval.

Specified by:

contains in interface Interval

Parameters:

date - date to be checked

Returns:

true if the date is included in the interval

contains

public boolean contains(Interval interval)

Checks whether an interval is completely contained in the interval.

Specified by:

contains in interface Interval

Parameters:

interval - interval to check

Returns:

true if the interval is completely contained in the interval

containsStatic

public static boolean containsStatic(Interval interval,
                                     JaretDate date)

Static helper, check whether a dat eis included in an interval.

Parameters:

interval - interval

date - date to check for inclusion

Returns:

true if date is contained in interval

getSeconds

public int getSeconds()

Retrieve the length of the interval in seconds.

Specified by:

getSeconds in interface Interval

Returns:

length of the interval in seconds

toString

public String toString()

Overrides:

toString in class Object

intersects

public boolean intersects(Interval interval)

Check whether this intersects the given interval.

Specified by:

intersects in interface Interval

Parameters:

interval - interval to be checked for intersection.

Returns:

true if an intersection exists, false otherwise

intersect

public static boolean intersect(Interval i1,
                                Interval i2)

Helper method determing if two intervals intersect.

Parameters:

i1 - interval1

i2 - interval2

Returns:

true if i1 and i2 intersect

intersectNonIncluding

public static boolean intersectNonIncluding(Interval i1,
                                            Interval i2)

Static helper method, check intersection not including the interval edges.

Parameters:

i1 - interval 1

i2 - interval 2

Returns:

true if the intervals intersect

containsNonIncluding

public static boolean containsNonIncluding(Interval interval,
                                           JaretDate date)

Check whether a given date is contained in the interval not including the exact boundaries.

Parameters:

interval - interval

date - date to be checked

Returns:

true if the date is inside the interval

propertyChange

public void propertyChange(PropertyChangeEvent evt)

check begin and end instances.

Specified by:

propertyChange in interface PropertyChangeListener