ucar.nc2.time

Class CalendarDateFormatter

java.lang.Object

ucar.nc2.time.CalendarDateFormatter

@ThreadSafe
public class CalendarDateFormatter
extends Object

Threadsafe static routines for date formatting. Replacement for ucar.nc2.units.DateFormatter

Since:

7/9/11

Field Summary

Fields

Modifier and Type	Field and Description
static String	isodatePatternString

Constructor Summary

Constructors

Constructor and Description
CalendarDateFormatter(String pattern) Date formatter with specified pattern.
CalendarDateFormatter(String pattern, CalendarTimeZone tz)
CalendarDateFormatter(String pattern, CalendarTimeZone tz, Calendar cal)

Method Summary

Modifier and Type	Method and Description
static CalendarDateFormatter	factory(CalendarPeriod period)
static CalendarDate	isoStringToCalendarDate(Calendar calt, String iso) Convert an ISO formatted String to a CalendarDate.
CalendarDate	parse(String timeString)
static String	toDateString(CalendarDate cd)
static String	toDateString(Date date)
static String	toDateStringPresent()
static String	toDateTimeString(CalendarDate cd)
static String	toDateTimeString(Date date)
static String	toDateTimeStringISO(CalendarDate cd)
static String	toDateTimeStringISO(Date d)
static String	toDateTimeStringISO(long millisecs)
static String	toDateTimeStringPresent()
String	toString(CalendarDate cd)
static String	toTimeUnits(CalendarDate cd) udunits formatting
static String	toTimeUnits(Date date)

Methods inherited from class java.lang.Object

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

Field Detail

isodatePatternString

public static final String isodatePatternString

See Also:

Constant Field Values

Constructor Detail

CalendarDateFormatter

public CalendarDateFormatter(String pattern)

Date formatter with specified pattern. NOTE: we are using jodatime patterns right now, but may switch to jsr-310 when thats available in java 8. Not sure whether these patterns will still work then, so use this formatter at the risk of having to change it eventually. OTOH, its likely that the same functionality will be present in jsr-310.

The pattern syntax is mostly compatible with java.text.SimpleDateFormat - time zone names cannot be parsed and a few more symbols are supported. All ASCII letters are reserved as pattern letters, which are defined as follows:

 Symbol  Meaning                      Presentation  Examples
 ------  -------                      ------------  -------
 G       era                          text          AD
 C       century of era (>=0)         number        20
 Y       year of era (>=0)            year          1996

 x       weekyear                     year          1996
 w       week of weekyear             number        27
 e       day of week                  number        2
 E       day of week                  text          Tuesday; Tue

 y       year                         year          1996
 D       day of year                  number        189
 M       month of year                month         July; Jul; 07
 d       day of month                 number        10

 a       halfday of day               text          PM
 K       hour of halfday (0~11)       number        0
 h       clockhour of halfday (1~12)  number        12

 H       hour of day (0~23)           number        0
 k       clockhour of day (1~24)      number        24
 m       minute of hour               number        30
 s       second of minute             number        55
 S       fraction of second           number        978

 z       time zone                    text          Pacific Standard Time; PST
 Z       time zone offset/id          zone          -0800; -08:00; America/Los_Angeles

 '       escape for text              delimiter
 ''      single quote                 literal       '
 

CalendarDateFormatter

public CalendarDateFormatter(String pattern,
                             CalendarTimeZone tz)

CalendarDateFormatter

public CalendarDateFormatter(String pattern,
                             CalendarTimeZone tz,
                             Calendar cal)

Method Detail

factory

public static CalendarDateFormatter factory(CalendarPeriod period)

isoStringToCalendarDate

public static CalendarDate isoStringToCalendarDate(Calendar calt,
                                                   String iso)
                                            throws IllegalArgumentException

Convert an ISO formatted String to a CalendarDate.

Parameters:

calt - calendar, may be null for default calendar (Calendar.getDefault())

iso - ISO 8601 date String

 possible forms for W3C profile of ISO 8601
      Year:
       YYYY (eg 1997)
    Year and month:
       YYYY-MM (eg 1997-07)
    Complete date:
       YYYY-MM-DD (eg 1997-07-16)
    Complete date plus hours and minutes:
       YYYY-MM-DDThh:mmTZD (eg 1997-07-16T19:20+01:00)
    Complete date plus hours, minutes and seconds:
       YYYY-MM-DDThh:mm:ssTZD (eg 1997-07-16T19:20:30+01:00)
    Complete date plus hours, minutes, seconds and a decimal fraction of a second
       YYYY-MM-DDThh:mm:ss.sTZD (eg 1997-07-16T19:20:30.45+01:00)
  
  where:
      YYYY = four-digit year
      MM   = two-digit month (01=January, etc.)
      DD   = two-digit day of month (01 through 31)
      hh   = two digits of hour (00 through 23) (am/pm NOT allowed)
      mm   = two digits of minute (00 through 59)
      ss   = two digits of second (00 through 59)
      s    = one or more digits representing a decimal fraction of a second
      TZD  = time zone designator (Z or +hh:mm or -hh:mm)
  except:
     You may use a space instead of the 'T'
     The year may be preceeded by a '+' (ignored) or a '-' (makes the date BCE)
     The date part uses a '-' delimiter instead of a fixed number of digits for each field
     The time part uses a ':' delimiter instead of a fixed number of digits for each field
        

Returns:

CalendarDate using given calendar

Throws:

IllegalArgumentException - if the String is not a valid ISO 8601 date

See Also:

"http://www.w3.org/TR/NOTE-datetime"

parse

public CalendarDate parse(String timeString)

toDateString

public static String toDateString(CalendarDate cd)

toDateString

public static String toDateString(Date date)

toDateStringPresent

public static String toDateStringPresent()

toDateTimeString

public static String toDateTimeString(CalendarDate cd)

toDateTimeString

public static String toDateTimeString(Date date)

toDateTimeStringISO

public static String toDateTimeStringISO(CalendarDate cd)

toDateTimeStringISO

public static String toDateTimeStringISO(Date d)

toDateTimeStringISO

public static String toDateTimeStringISO(long millisecs)

toDateTimeStringPresent

public static String toDateTimeStringPresent()

toString

public String toString(CalendarDate cd)

toTimeUnits

public static String toTimeUnits(CalendarDate cd)

udunits formatting

Parameters:

cd - the calendar date

Returns:

udunits formated date

toTimeUnits

public static String toTimeUnits(Date date)