ucar.nc2.units
Class DateRange

java.lang.Object
  ucar.nc2.units.DateRange

public class DateRange
extends java.lang.Object

Implements a range of dates, using DateType and/or TimeDuration. You can use a DateType = "present" and a time duration to specify "real time" intervals, eg "last 3 days" uses endDate = "present" and duration = "3 days".

Author:

john caron

Constructor Summary

DateRange()
default Constructor

DateRange(java.util.Date start, java.util.Date end)
Create Date Range from a start and end date

DateRange(DateRange range, java.lang.String timeUnits)
Create DateRange from another DateRange, with a different units of resolution.

DateRange(DateType start, DateType end, TimeDuration duration, TimeDuration resolution)
Encapsolates a range of dates, using DateType start/end, and/or a TimeDuration.

Method Summary

boolean	equals(java.lang.Object o)
void	extend(DateRange dr) Extend this date range by the given one.
TimeDuration	getDuration()
DateType	getEnd()
TimeDuration	getResolution()
DateType	getStart()
int	hashCode() Override Object.hashCode() to implement equals.
boolean	included(java.util.Date d) Determine if the given date is included in this date range.
DateRange	intersect(DateRange clip) Intersect with another date range
boolean	intersects(java.util.Date start_want, java.util.Date end_want) Determine if the given range intersects this date range.
boolean	isEmpty() If the range is empty
boolean	isPoint() Return true if start date equals end date, so date range is a point.
void	setDuration(TimeDuration duration)
void	setEnd(DateType end)
void	setResolution(TimeDuration resolution)
void	setStart(DateType start)
java.lang.String	toString()
boolean	useDuration()
boolean	useEnd()
boolean	useResolution()
boolean	useStart()

Methods inherited from class java.lang.Object

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

Constructor Detail

DateRange

public DateRange()
          throws java.text.ParseException

default Constructor

Throws:

java.text.ParseException - artifact, cant happen

DateRange

public DateRange(java.util.Date start,
                 java.util.Date end)

Create Date Range from a start and end date

Parameters:

start - start of range

end - end of range

DateRange

public DateRange(DateRange range,
                 java.lang.String timeUnits)
          throws java.lang.Exception

Create DateRange from another DateRange, with a different units of resolution.

Parameters:

range - copy start and end from here

timeUnits - make resolution using new TimeDuration( timeUnits)

Throws:

java.lang.Exception - is units are not valid time units

DateRange

public DateRange(DateType start,
                 DateType end,
                 TimeDuration duration,
                 TimeDuration resolution)

Encapsolates a range of dates, using DateType start/end, and/or a TimeDuration. A DateRange can be specified in any of the following ways:

1. a start date and end date
2. a start date and duration
3. an end date and duration

Parameters:

start - starting date

end - ending date

duration - time duration

resolution - time resolution; optional

Method Detail

included

public boolean included(java.util.Date d)

Determine if the given date is included in this date range. The date range includes the start and end dates.

Parameters:

d - date to check

Returns:

true if date in inside this range

intersects

public boolean intersects(java.util.Date start_want,
                          java.util.Date end_want)

Determine if the given range intersects this date range.

Parameters:

start_want - range starts here

end_want - range ends here

Returns:

true if ranges intersect

intersect

public DateRange intersect(DateRange clip)

Intersect with another date range

Parameters:

clip - interset with this date range

Returns:

new date range that is the intersection

extend

public void extend(DateRange dr)

Extend this date range by the given one.

Parameters:

dr - given DateRange

getStart

public DateType getStart()

setStart

public void setStart(DateType start)

getEnd

public DateType getEnd()

setEnd

public void setEnd(DateType end)

getDuration

public TimeDuration getDuration()

setDuration

public void setDuration(TimeDuration duration)

getResolution

public TimeDuration getResolution()

setResolution

public void setResolution(TimeDuration resolution)

useStart

public boolean useStart()

useEnd

public boolean useEnd()

useDuration

public boolean useDuration()

useResolution

public boolean useResolution()

isPoint

public boolean isPoint()

Return true if start date equals end date, so date range is a point.

Returns:

true if start = end

isEmpty

public boolean isEmpty()

If the range is empty

Returns:

if the range is empty

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Override Object.hashCode() to implement equals.

Overrides:

hashCode in class java.lang.Object