org.dspace.content

Class DCDate

java.lang.Object

org.dspace.content.DCDate

public class DCDate
extends java.lang.Object

Dublin Core date utility class

Dates in the DSpace database are held in the ISO 8601 format. They are always stored in UTC, converting to and from the current time zone. In practice only dates with a time component need to be converted.

YYYY-MM-DDThh:mm:ss

There are four levels of granularity, depending on how much date information is available: year, month, day, time.

Examples: 1994-05-03T15:30:24,1995-10-04, 2001-10,1975

Version:

$Revision$

Author:

Robert Tansley, Larry Stone

Constructor Summary

Constructors

Constructor and Description
DCDate(java.util.Date date) Construct a date object from a Java Date object.
DCDate(int yyyy, int mm, int dd, int hh, int mn, int ss) Construct a date object from a bunch of component parts.
DCDate(java.lang.String fromDC) Construct a date from a Dublin Core value

Method Summary

Methods

Modifier and Type	Method and Description
java.lang.String	displayDate(boolean showTime, boolean isLocalTime, java.util.Locale locale) Format a human-readable version of the DCDate, with optional time.
java.lang.String	displayLocalDate(boolean showTime, java.util.Locale locale)
java.lang.String	displayUTCDate(boolean showTime, java.util.Locale locale)
static DCDate	getCurrent() Get a date representing the current instant in time.
int	getDay() Get the day, adjusting for current time zone.
int	getDayUTC() Get the day in UTC.
int	getHour() Get the hour, adjusting for current time zone.
int	getHourUTC() Get the hour in UTC.
int	getMinute() Get the minute, adjusting for current time zone.
int	getMinuteUTC() Get the minute in UTC.
int	getMonth() Get the month, adjusting for current time zone.
static java.lang.String	getMonthName(int m, java.util.Locale locale) Get a month's name for a month between 1 and 12.
int	getMonthUTC() Get the month in UTC.
int	getSecond() Get the second, adjusting for current time zone.
int	getSecondUTC() Get the second in UTC.
int	getYear() Get the year, adjusting for current time zone.
int	getYearUTC() Get the year in UTC.
java.util.Date	toDate() Get the date as a Java Date object.
java.lang.String	toString() Get the date as a string to put back in the Dublin Core.

Methods inherited from class java.lang.Object

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

Constructor Detail

DCDate

public DCDate(java.util.Date date)

Construct a date object from a Java Date object.

Parameters:

date - the Java Date object.

DCDate

public DCDate(int yyyy,
      int mm,
      int dd,
      int hh,
      int mn,
      int ss)

Construct a date object from a bunch of component parts. The date passed in is assumed to be in the current time zone. Unknown values should be given as -1.

Parameters:

yyyy - the year

mm - the month

dd - the day

hh - the hours

mn - the minutes

ss - the seconds

DCDate

public DCDate(java.lang.String fromDC)

Construct a date from a Dublin Core value

Parameters:

fromDC - the date string, in ISO 8601 (no timezone, always use UTC)

Method Detail

getYear

public int getYear()

Get the year, adjusting for current time zone.

Returns:

the year

getMonth

public int getMonth()

Get the month, adjusting for current time zone.

Returns:

the month

getDay

public int getDay()

Get the day, adjusting for current time zone.

Returns:

the day

getHour

public int getHour()

Get the hour, adjusting for current time zone.

Returns:

the hour

getMinute

public int getMinute()

Get the minute, adjusting for current time zone.

Returns:

the minute

getSecond

public int getSecond()

Get the second, adjusting for current time zone.

Returns:

the second

getYearUTC

public int getYearUTC()

Get the year in UTC.

Returns:

the year

getMonthUTC

public int getMonthUTC()

Get the month in UTC.

Returns:

the month

getDayUTC

public int getDayUTC()

Get the day in UTC.

Returns:

the day

getHourUTC

public int getHourUTC()

Get the hour in UTC.

Returns:

the hour

getMinuteUTC

public int getMinuteUTC()

Get the minute in UTC.

Returns:

the minute

getSecondUTC

public int getSecondUTC()

Get the second in UTC.

Returns:

the second

toString

public java.lang.String toString()

Get the date as a string to put back in the Dublin Core. Use the UTC/GMT calendar version.

Overrides:

toString in class java.lang.Object

Returns:

The date as a string.

toDate

public java.util.Date toDate()

Get the date as a Java Date object.

Returns:

a Date object

displayDate

public java.lang.String displayDate(boolean showTime,
                           boolean isLocalTime,
                           java.util.Locale locale)

Format a human-readable version of the DCDate, with optional time. This needs to be in DCDate because it depends on the granularity of the original time. FIXME: This should probably be replaced with a localized DateFormat.

Parameters:

showTime - if true, display the time with the date

isLocalTime - if true, adjust for local time zone, otherwise UTC

locale - locale of the user

Returns:

String with the date in a human-readable form.

displayLocalDate

public java.lang.String displayLocalDate(boolean showTime,
                                java.util.Locale locale)

displayUTCDate

public java.lang.String displayUTCDate(boolean showTime,
                              java.util.Locale locale)

getCurrent

public static DCDate getCurrent()

Get a date representing the current instant in time.

Returns:

a DSpaceDate object representing the current instant.

getMonthName

public static java.lang.String getMonthName(int m,
                            java.util.Locale locale)

Get a month's name for a month between 1 and 12. Any invalid month value (e.g. 0 or -1) will return a value of "Unspecified".

Parameters:

m - the month number

locale -

Returns:

the month name.