DateGroovyMethods (Groovy 1.8.4)

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Groovy 1.8.4

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org.codehaus.groovy.runtime
[Java] Class DateGroovyMethods

java.lang.Object
  org.codehaus.groovy.runtime.DateGroovyMethods

public class DateGroovyMethods
extends Object

This class defines new groovy methods which appear on normal JDK Date and Calendar classes inside the Groovy environment.

Method Summary
`static Date`	`clearTime(Date self)` Clears the time portion of this Date instance; Util where it makes sense to compare month/day/year only portions of a Date
`static Date`	`clearTime(Date self)` Clears the time portion of this java.sql.Date instance; useful utility where it makes sense to compare month/day/year only portions of a Date
`static Calendar`	`clearTime(Calendar self)` Clears the time portion of this Calendar instance; useful utility where it makes sense to compare month/day/year only portions of a Calendar.
`static String`	`format(Date self, String format)`
`static String`	`format(Date self, String format, TimeZone tz)`
`static String`	`format(Calendar self, String pattern)`
`static int`	`getAt(Date self, int field)` Support the subscript operator for a Date.
`static int`	`getAt(Calendar self, int field)` Support the subscript operator for a Calendar.
`static String`	`getDateString(Date self)`
`static String`	`getDateTimeString(Date self)`
`static String`	`getTimeString(Date self)`
`static Date`	`minus(Date self, int days)` Subtract a number of days from this date and returns the new date.
`static Date`	`minus(Date self, int days)` Subtract a number of days from this date and returns the new date.
`static int`	`minus(Calendar self, Calendar then)` Subtract another date from this one and return the number of days of the difference.
`static int`	`minus(Date self, Date then)` Subtract another Date from this one and return the number of days of the difference.
`static Date`	`next(Date self)` Increment a Date by one day.
`static Date`	`next(Date self)` Increment a java.sql.Date by one day.
`static Date`	`plus(Date self, int days)` Add a number of days to this date and returns the new date.
`static Date`	`plus(Date self, int days)` Add a number of days to this date and returns the new date.
`static Date`	`previous(Date self)` Decrement a Date by one day.
`static Date`	`previous(Date self)` Decrement a java.sql.Date by one day.
`static void`	`putAt(Calendar self, int field, int value)` Support the subscript operator for mutating a Calendar.
`static void`	`putAt(Date self, int field, int value)` Support the subscript operator for mutating a Date.
`static void`	`set(Calendar self, Map updates)` Support mutating a Calendar with a Map.
`static void`	`set(Date self, Map updates)` Support mutating a Date with a Map.
`static Calendar`	`toCalendar(Date self)` Convert a Date to a Calendar.
`static Calendar`	`updated(Calendar self, Map updates)` Support creating a new Date having similar properties to an existing Date (which remains unaltered) but with some fields updated according to a Map of changes.
`static Date`	`updated(Date self, Map updates)` Support creating a new Date having similar properties to an existing Date (which remains unaltered) but with some fields updated according to a Map of changes.

Methods inherited from class Object
wait, wait, wait, equals, toString, hashCode, getClass, notify, notifyAll

Method Detail

clearTime

public static Date clearTime(Date self)

Clears the time portion of this Date instance; Util where it makes sense to compare month/day/year only portions of a Date

Parameters:: self - a Date

Returns:: the Date but with the time portion cleared

Since:: 1.6.7

clearTime

public static Date clearTime(Date self)

Clears the time portion of this java.sql.Date instance; useful utility where it makes sense to compare month/day/year only portions of a Date

Parameters:: self - a java.sql.Date

Returns:: the java.sql.Date but with the time portion cleared

Since:: 1.6.7

clearTime

public static Calendar clearTime(Calendar self)

Clears the time portion of this Calendar instance; useful utility where it makes sense to compare month/day/year only portions of a Calendar.

Parameters:: self - a Calendar

Returns:: the Calendar but with the time portion cleared

Since:: 1.6.7

format

public static String format(Date self, String format)

Create a String representation of this date according to the given format pattern.

For example, if the system timezone is GMT, new Date(0).format('MM/dd/yy') would return the string "01/01/70". See documentation for SimpleDateFormat for format pattern use.

Note that a new DateFormat instance is created for every invocation of this method (for thread safety).

Parameters:: self - a Date; format - the format pattern to use according to SimpleDateFormat

Returns:: a string representation of this date.

See Also:: SimpleDateFormat

Since:: 1.5.7

format

public static String format(Date self, String format, TimeZone tz)

Create a String representation of this date according to the given format pattern and timezone.

For example: def d = new Date(0) def tz = TimeZone.getTimeZone('GMT') println d.format('dd/MMM/yyyy', tz) would return the string "01/Jan/1970". See documentation for SimpleDateFormat for format pattern use.

Note that a new DateFormat instance is created for every invocation of this method (for thread safety).

Parameters:: self - a Date; format - the format pattern to use according to SimpleDateFormat; tz - the TimeZone to use

Returns:: a string representation of this date.

See Also:: SimpleDateFormat

Since:: 1.8.3

format

public static String format(Calendar self, String pattern)

Shortcut for SimpleDateFormat to output a String representation of this calendar instance. This method respects the Calendar's assigned TimeZone, whereas calling cal.time.format('HH:mm:ss') would use the system timezone.

Note that Calendar equivalents of date.getDateString() and variants do not exist because those methods are Locale-dependent. Although a Calendar may be assigned a Locale, that information is lost and therefore cannot be used to control the default date/time formats provided by these methods. Instead, the system Locale would always be used. The alternative is to simply call DateFormat.getDateInstance and pass the same Locale that was used for the Calendar.

Parameters:: self - this calendar; pattern - format pattern

Returns:: String representation of this calendar with the given format.

See Also:: DateFormat.setTimeZone; SimpleDateFormat.format; format(java.util.Date, String)

Since:: 1.6.0

getAt

public static int getAt(Date self, int field)

Support the subscript operator for a Date.

Parameters:: self - a Date; field - a Calendar field, e.g. MONTH

Returns:: the value for the given field, e.g. FEBRUARY

See Also:: Calendar

Since:: 1.5.5

getAt

public static int getAt(Calendar self, int field)

Support the subscript operator for a Calendar.

Parameters:: self - a Calendar; field - a Calendar field, e.g. MONTH

Returns:: the value for the given field, e.g. FEBRUARY

See Also:: Calendar

Since:: 1.7.3

getDateString

public static String getDateString(Date self)

Return a string representation of the 'day' portion of this date according to the locale-specific DateFormat.SHORT default format. For an "en_UK" system locale, this would be dd/MM/yy.

Note that a new DateFormat instance is created for every invocation of this method (for thread safety).

Parameters:: self - a Date

Returns:: a string representation of this date

See Also:: DateFormat.getDateInstance; DateFormat.SHORT

Since:: 1.5.7

getDateTimeString

public static String getDateTimeString(Date self)

Return a string representation of the date and time time portion of this Date instance, according to the locale-specific format used by DateFormat. This method uses the DateFormat.SHORT preset for the day portion and DateFormat.MEDIUM for the time portion of the output string.

Note that a new DateFormat instance is created for every invocation of this method (for thread safety).

Parameters:: self - a Date

Returns:: a string representation of this date and time

See Also:: DateFormat.getDateTimeInstance

Since:: 1.5.7

getTimeString

public static String getTimeString(Date self)

Return a string representation of the time portion of this date according to the locale-specific DateFormat.MEDIUM default format. For an "en_UK" system locale, this would be HH:MM:ss.

Note that a new DateFormat instance is created for every invocation of this method (for thread safety).

Parameters:: self - a Date

Returns:: a string representing the time portion of this date

See Also:: DateFormat.getTimeInstance; DateFormat.MEDIUM

Since:: 1.5.7

minus

public static Date minus(Date self, int days)

Subtract a number of days from this date and returns the new date.

Parameters:: self - a Date; days - the number of days to subtract

Returns:: the new date

Since:: 1.0

minus

public static Date minus(Date self, int days)

Subtract a number of days from this date and returns the new date.

Parameters:: self - a java.sql.Date; days - the number of days to subtract

Returns:: the new date

Since:: 1.0

minus

public static int minus(Calendar self, Calendar then)

Subtract another date from this one and return the number of days of the difference.

Date self = Date then + (Date self - Date then)

IOW, if self is before then the result is a negative value.

Parameters:: self - a Calendar; then - another Calendar

Returns:: number of days

Since:: 1.6.0

minus

public static int minus(Date self, Date then)

Subtract another Date from this one and return the number of days of the difference.

Date self = Date then + (Date self - Date then)

IOW, if self is before then the result is a negative value.

Parameters:: self - a Date; then - another Date

Returns:: number of days

Since:: 1.6.0

public static Date next(Date self)

Increment a Date by one day.

Parameters:: self - a Date

Returns:: the next days date

Since:: 1.0

public static Date next(Date self)

Increment a java.sql.Date by one day.

Parameters:: self - a java.sql.Date

Returns:: the next days date

Since:: 1.0

plus

public static Date plus(Date self, int days)

Add a number of days to this date and returns the new date.

Parameters:: self - a Date; days - the number of days to increase

Returns:: the new date

Since:: 1.0

plus

public static Date plus(Date self, int days)

Add a number of days to this date and returns the new date.

Parameters:: self - a java.sql.Date; days - the number of days to increase

Returns:: the new date

Since:: 1.0

public static Date previous(Date self)

Decrement a Date by one day.

Parameters:: self - a Date

Returns:: the previous days date

Since:: 1.0

public static Date previous(Date self)

Decrement a java.sql.Date by one day.

Parameters:: self - a java.sql.Date

Returns:: the previous days date

Since:: 1.0

putAt

public static void putAt(Calendar self, int field, int value)

Support the subscript operator for mutating a Calendar. Example usage:

 import static java.util.Calendar.*
 def cal = Calendar.instance
 cal[DAY_OF_WEEK] = MONDAY
 cal[MONTH] = MARCH
 println cal.time // A Monday in March

Parameters:: self - A Calendar; field - A Calendar field, e.g. MONTH; value - The value for the given field, e.g. FEBRUARY

See Also:: Calendar.set

Since:: 1.7.3

putAt

public static void putAt(Date self, int field, int value)

Support the subscript operator for mutating a Date.

Parameters:: self - A Date; field - A Calendar field, e.g. MONTH; value - The value for the given field, e.g. FEBRUARY

See Also:: putAt(java.util.Calendar, int, int); Calendar.set

Since:: 1.7.3

set

public static void set(Calendar self, Map updates)

Support mutating a Calendar with a Map.

The map values are the normal values provided as the second parameter to java.util.Calendar#set(int, int). The keys can either be the normal fields values provided as the first parameter to that method or one of the following Strings:

year	Calendar.YEAR
month	Calendar.MONTH
date	Calendar.DATE
hourOfDay	Calendar.HOUR_OF_DAY
minute	Calendar.MINUTE
second	Calendar.SECOND

Example usage:

 import static java.util.Calendar.*
 def cal = Calendar.instance
 def m = [:]
 m[YEAR] = 2010
 m[MONTH] = DECEMBER
 m[DATE] = 25
 cal.set(m)
 println cal.time // Christmas 2010

 cal.set(year:2011, month:DECEMBER, date:25)
 println cal.time // Christmas 2010

Parameters:: self - A Calendar; updates - A Map of Calendar keys and values

See Also:: Calendar.set; Calendar.set

Since:: 1.7.3

set

public static void set(Date self, Map updates)

Support mutating a Date with a Map.

Example usage:

 import static java.util.Calendar.YEAR
 def date = new Date()
 def nextYear = date[YEAR] + 1
 date.set(year: nextYear)
 println date

Parameters:: self - A Date; updates - A Map of Calendar keys and values

See Also:: Calendar.set; set(java.util.Calendar, java.util.Map)

Since:: 1.7.3

toCalendar

public static Calendar toCalendar(Date self)

Convert a Date to a Calendar.

Parameters:: self - a Date

Returns:: a Calendar corresponding to the given Date

Since:: 1.7.6

updated

public static Calendar updated(Calendar self, Map updates)

Support creating a new Date having similar properties to an existing Date (which remains unaltered) but with some fields updated according to a Map of changes.

Example usage:

 import static java.util.Calendar.YEAR
 def now = Calendar.instance
 def nextYear = now[YEAR] + 1
 def oneYearFromNow = now.updated(year: nextYear)
 println now.time
 println oneYearFromNow.time

Parameters:: self - A Calendar; updates - A Map of Calendar keys and values

Returns:: The newly created Calendar

See Also:: Calendar.set; Calendar.set; set(java.util.Calendar, java.util.Map)

Since:: 1.7.3

updated

public static Date updated(Date self, Map updates)

Support creating a new Date having similar properties to an existing Date (which remains unaltered) but with some fields updated according to a Map of changes.

Example usage:

 import static java.util.Calendar.YEAR
 def today = new Date()
 def nextYear = today[YEAR] + 1
 def oneYearFromNow = today.updated(year: nextYear)
 println today
 println oneYearFromNow

Parameters:: self - A Date; updates - A Map of Calendar keys and values

Returns:: The newly created Date

See Also:: Calendar.set; set(java.util.Date, java.util.Map); set(java.util.Calendar, java.util.Map); updated(java.util.Calendar, java.util.Map)

Since:: 1.7.3

org.codehaus.groovy.runtime [Java] Class DateGroovyMethods

clearTime

clearTime

clearTime

format

format

format

getAt

getAt

getDateString

getDateTimeString

getTimeString

minus

minus

minus

minus

next

next

plus

plus

previous

previous

putAt

putAt

set

set

toCalendar

updated

updated

org.codehaus.groovy.runtime
[Java] Class DateGroovyMethods