Calendar Class Reference

Calendar is an abstract base class for converting between a UDate object and a set of integer fields such as YEAR, MONTH, DAY, HOUR, and so on. More...

#include <calendar.h>

Inheritance diagram for Calendar:


Public Types
enum	EDateFields { ERA, YEAR, MONTH, WEEK_OF_YEAR, WEEK_OF_MONTH, DATE, DAY_OF_YEAR, DAY_OF_WEEK, DAY_OF_WEEK_IN_MONTH, AM_PM, HOUR, HOUR_OF_DAY, MINUTE, SECOND, MILLISECOND, ZONE_OFFSET, DST_OFFSET, YEAR_WOY, DOW_LOCAL, EXTENDED_YEAR, JULIAN_DAY, MILLISECONDS_IN_DAY, IS_LEAP_MONTH, FIELD_COUNT = UCAL_FIELD_COUNT }
	Field IDs for date and time. More...
enum	EDaysOfWeek { SUNDAY = 1, MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY }
	Useful constant for days of week. More...
enum	EMonths { JANUARY, FEBRUARY, MARCH, APRIL, MAY, JUNE, JULY, AUGUST, SEPTEMBER, OCTOBER, NOVEMBER, DECEMBER, UNDECIMBER }
	Useful constants for month. More...
enum	EAmpm { AM, PM }
	Useful constants for hour in 12-hour clock. More...
Public Member Functions
virtual	~Calendar ()
	destructor
virtual Calendar *	clone (void) const =0
	Create and return a polymorphic copy of this calendar.
UDate	getTime (UErrorCode &status) const
	Gets this Calendar's time as milliseconds.
void	setTime (UDate date, UErrorCode &status)
	Sets this Calendar's current time with the given UDate.
virtual UBool	operator== (const Calendar &that) const
	Compares the equality of two Calendar objects.
UBool	operator!= (const Calendar &that) const
	Compares the inequality of two Calendar objects.
virtual UBool	isEquivalentTo (const Calendar &other) const
	Returns TRUE if the given Calendar object is equivalent to this one.
UBool	equals (const Calendar &when, UErrorCode &status) const
	Compares the Calendar time, whereas Calendar::operator== compares the equality of Calendar objects.
UBool	before (const Calendar &when, UErrorCode &status) const
	Returns true if this Calendar's current time is before "when"'s current time.
UBool	after (const Calendar &when, UErrorCode &status) const
	Returns true if this Calendar's current time is after "when"'s current time.
virtual void	add (EDateFields field, int32_t amount, UErrorCode &status)
	UDate Arithmetic function.
virtual void	add (UCalendarDateFields field, int32_t amount, UErrorCode &status)
	UDate Arithmetic function.
void	roll (EDateFields field, UBool up, UErrorCode &status)
	Time Field Rolling function.
void	roll (UCalendarDateFields field, UBool up, UErrorCode &status)
	Time Field Rolling function.
virtual void	roll (EDateFields field, int32_t amount, UErrorCode &status)
	Time Field Rolling function.
virtual void	roll (UCalendarDateFields field, int32_t amount, UErrorCode &status)
	Time Field Rolling function.
virtual int32_t	fieldDifference (UDate when, EDateFields field, UErrorCode &status)
	Return the difference between the given time and the time this calendar object is set to.
virtual int32_t	fieldDifference (UDate when, UCalendarDateFields field, UErrorCode &status)
	Return the difference between the given time and the time this calendar object is set to.
void	adoptTimeZone (TimeZone *value)
	Sets the calendar's time zone to be the one passed in.
void	setTimeZone (const TimeZone &zone)
	Sets the calendar's time zone to be the same as the one passed in.
const TimeZone &	getTimeZone (void) const
	Returns a reference to the time zone owned by this calendar.
TimeZone *	orphanTimeZone (void)
	Returns the time zone owned by this calendar.
virtual UBool	inDaylightTime (UErrorCode &status) const =0
	Queries if the current date for this Calendar is in Daylight Savings Time.
void	setLenient (UBool lenient)
	Specifies whether or not date/time interpretation is to be lenient.
UBool	isLenient (void) const
	Tells whether date/time interpretation is to be lenient.
void	setFirstDayOfWeek (EDaysOfWeek value)
	Sets what the first day of the week is; e.g., Sunday in US, Monday in France.
void	setFirstDayOfWeek (UCalendarDaysOfWeek value)
	Sets what the first day of the week is; e.g., Sunday in US, Monday in France.
EDaysOfWeek	getFirstDayOfWeek (void) const
	Gets what the first day of the week is; e.g., Sunday in US, Monday in France.
UCalendarDaysOfWeek	getFirstDayOfWeek (UErrorCode &status) const
	Gets what the first day of the week is; e.g., Sunday in US, Monday in France.
void	setMinimalDaysInFirstWeek (uint8_t value)
	Sets what the minimal days required in the first week of the year are; For example, if the first week is defined as one that contains the first day of the first month of a year, call the method with value 1.
uint8_t	getMinimalDaysInFirstWeek (void) const
	Gets what the minimal days required in the first week of the year are; e.g., if the first week is defined as one that contains the first day of the first month of a year, getMinimalDaysInFirstWeek returns 1.
virtual int32_t	getMinimum (EDateFields field) const
	Gets the minimum value for the given time field.
virtual int32_t	getMinimum (UCalendarDateFields field) const
	Gets the minimum value for the given time field.
virtual int32_t	getMaximum (EDateFields field) const
	Gets the maximum value for the given time field.
virtual int32_t	getMaximum (UCalendarDateFields field) const
	Gets the maximum value for the given time field.
virtual int32_t	getGreatestMinimum (EDateFields field) const
	Gets the highest minimum value for the given field if varies.
virtual int32_t	getGreatestMinimum (UCalendarDateFields field) const
	Gets the highest minimum value for the given field if varies.
virtual int32_t	getLeastMaximum (EDateFields field) const
	Gets the lowest maximum value for the given field if varies.
virtual int32_t	getLeastMaximum (UCalendarDateFields field) const
	Gets the lowest maximum value for the given field if varies.
int32_t	getActualMinimum (EDateFields field, UErrorCode &status) const
	Return the minimum value that this field could have, given the current date.
virtual int32_t	getActualMinimum (UCalendarDateFields field, UErrorCode &status) const
	Return the minimum value that this field could have, given the current date.
int32_t	getActualMaximum (EDateFields field, UErrorCode &status) const
	Return the maximum value that this field could have, given the current date.
virtual int32_t	getActualMaximum (UCalendarDateFields field, UErrorCode &status) const
	Return the maximum value that this field could have, given the current date.
int32_t	get (EDateFields field, UErrorCode &status) const
	Gets the value for a given time field.
int32_t	get (UCalendarDateFields field, UErrorCode &status) const
	Gets the value for a given time field.
UBool	isSet (EDateFields field) const
	Determines if the given time field has a value set.
UBool	isSet (UCalendarDateFields field) const
	Determines if the given time field has a value set.
void	set (EDateFields field, int32_t value)
	Sets the given time field with the given value.
void	set (UCalendarDateFields field, int32_t value)
	Sets the given time field with the given value.
void	set (int32_t year, int32_t month, int32_t date)
	Sets the values for the fields YEAR, MONTH, and DATE.
void	set (int32_t year, int32_t month, int32_t date, int32_t hour, int32_t minute)
	Sets the values for the fields YEAR, MONTH, DATE, HOUR_OF_DAY, and MINUTE.
void	set (int32_t year, int32_t month, int32_t date, int32_t hour, int32_t minute, int32_t second)
	Sets the values for the fields YEAR, MONTH, DATE, HOUR_OF_DAY, MINUTE, and SECOND.
void	clear (void)
	Clears the values of all the time fields, making them both unset and assigning them a value of zero.
void	clear (EDateFields field)
	Clears the value in the given time field, both making it unset and assigning it a value of zero.
void	clear (UCalendarDateFields field)
	Clears the value in the given time field, both making it unset and assigning it a value of zero.
virtual UClassID	getDynamicClassID (void) const =0
	Returns a unique class ID POLYMORPHICALLY.
virtual const char *	getType () const =0
	Returns the resource key string used for this calendar type.
virtual UBool	haveDefaultCentury () const =0
virtual UDate	defaultCenturyStart () const =0
virtual int32_t	defaultCenturyStartYear () const =0
Locale	getLocale (ULocDataLocaleType type, UErrorCode &status) const
	Get the locale for this calendar object.
const char *	getLocaleID (ULocDataLocaleType type, UErrorCode &status) const
	Get the locale for this calendar object.
Static Public Member Functions
static Calendar *	createInstance (UErrorCode &success)
	Creates a Calendar using the default timezone and locale.
static Calendar *	createInstance (TimeZone *zoneToAdopt, UErrorCode &success)
	Creates a Calendar using the given timezone and the default locale.
static Calendar *	createInstance (const TimeZone &zone, UErrorCode &success)
	Creates a Calendar using the given timezone and the default locale.
static Calendar *	createInstance (const Locale &aLocale, UErrorCode &success)
	Creates a Calendar using the default timezone and the given locale.
static Calendar *	createInstance (TimeZone *zoneToAdopt, const Locale &aLocale, UErrorCode &success)
	Creates a Calendar using the given timezone and given locale.
static Calendar *	createInstance (const TimeZone &zoneToAdopt, const Locale &aLocale, UErrorCode &success)
	Gets a Calendar using the given timezone and given locale.
static const Locale *	getAvailableLocales (int32_t &count)
	Returns a list of the locales for which Calendars are installed.
static UDate	getNow (void)
	Returns the current UTC (GMT) time measured in milliseconds since 0:00:00 on 1/1/70 (derived from the system time).
static StringEnumeration *	getAvailableLocales (void)
	INTERNAL FOR 2.6 -- Registration.
static URegistryKey	registerFactory (ICUServiceFactory *toAdopt, UErrorCode &status)
	Register a new Calendar factory.
static UBool	unregister (URegistryKey key, UErrorCode &status)
	Unregister a previously-registered CalendarFactory using the key returned from the register call.
Protected Types
enum	ELimitType { UCAL_LIMIT_MINIMUM = 0, UCAL_LIMIT_GREATEST_MINIMUM, UCAL_LIMIT_LEAST_MAXIMUM, UCAL_LIMIT_MAXIMUM, UCAL_LIMIT_COUNT }
	Limit enums. More...
enum	{ kResolveSTOP = -1, kResolveRemap = 32 }
	Values for field resolution tables. More...
enum	{ kUnset = 0, kInternallySet, kMinimumUserStamp }
	Special values of stamp[]. More...
Protected Member Functions
	Calendar (UErrorCode &success)
	Constructs a Calendar with the default time zone as returned by TimeZone::createInstance(), and the default locale.
	Calendar (const Calendar &source)
	Copy constructor.
Calendar &	operator= (const Calendar &right)
	Default assignment operator.
	Calendar (TimeZone *zone, const Locale &aLocale, UErrorCode &success)
	Constructs a Calendar with the given time zone and locale.
	Calendar (const TimeZone &zone, const Locale &aLocale, UErrorCode &success)
	Constructs a Calendar with the given time zone and locale.
virtual void	computeTime (UErrorCode &status)
	Converts Calendar's time field values to GMT as milliseconds.
virtual void	computeFields (UErrorCode &status)
	Converts GMT as milliseconds to time field values.
double	getTimeInMillis (UErrorCode &status) const
	Gets this Calendar's current time as a long.
void	setTimeInMillis (double millis, UErrorCode &status)
	Sets this Calendar's current time from the given long value.
void	complete (UErrorCode &status)
	Recomputes the current time from currently set fields, and then fills in any unset fields in the time field list.
int32_t	internalGet (EDateFields field) const
	Gets the value for a given time field.
int32_t	internalGet (UCalendarDateFields field, int32_t defaultValue) const
	Gets the value for a given time field.
int32_t	internalGet (UCalendarDateFields field) const
	Gets the value for a given time field.
void	internalSet (EDateFields field, int32_t value)
	Sets the value for a given time field.
void	internalSet (UCalendarDateFields field, int32_t value)
	Sets the value for a given time field.
virtual void	prepareGetActual (UCalendarDateFields field, UBool isMinimum, UErrorCode &status)
	Prepare this calendar for computing the actual minimum or maximum.
virtual int32_t	handleGetLimit (UCalendarDateFields field, ELimitType limitType) const =0
	Subclass API for defining limits of different types.
virtual int32_t	getLimit (UCalendarDateFields field, ELimitType limitType) const
	Return a limit for a field.
virtual int32_t	handleComputeMonthStart (int32_t eyear, int32_t month, UBool useMonth) const =0
	Return the Julian day number of day before the first day of the given month in the given extended year.
virtual int32_t	handleGetMonthLength (int32_t extendedYear, int32_t month) const
	Return the number of days in the given month of the given extended year of this calendar system.
virtual int32_t	handleGetYearLength (int32_t eyear) const
	Return the number of days in the given extended year of this calendar system.
virtual int32_t	handleGetExtendedYear ()=0
	Return the extended year defined by the current fields.
virtual int32_t	handleComputeJulianDay (UCalendarDateFields bestField)
	Subclasses may override this.
virtual int32_t	handleGetExtendedYearFromWeekFields (int32_t yearWoy, int32_t woy)
	Subclasses must override this to convert from week fields (YEAR_WOY and WEEK_OF_YEAR) to an extended year in the case where YEAR, EXTENDED_YEAR are not set.
int32_t	computeJulianDay ()
	Compute the Julian day from fields.
int32_t	computeMillisInDay ()
	Compute the milliseconds in the day from the fields.
int32_t	computeZoneOffset (double millis, int32_t millisInDay, UErrorCode &ec)
	This method can assume EXTENDED_YEAR has been set.
int32_t	newestStamp (UCalendarDateFields start, UCalendarDateFields end, int32_t bestSoFar) const
	Determine the best stamp in a range.
UCalendarDateFields	resolveFields (const UFieldResolutionTable *precedenceTable)
	Given a precedence table, return the newest field combination in the table, or UCAL_FIELD_COUNT if none is found.
virtual const UFieldResolutionTable *	getFieldResolutionTable () const
UCalendarDateFields	newerField (UCalendarDateFields defaultField, UCalendarDateFields alternateField) const
	Return the field that is newer, either defaultField, or alternateField.
UDate	internalGetTime (void) const
	Get the current time without recomputing.
void	internalSetTime (UDate time)
	Set the current time without affecting flags or fields.
virtual void	handleComputeFields (int32_t julianDay, UErrorCode &status)
	Subclasses may override this method to compute several fields specific to each calendar system.
int32_t	getGregorianYear () const
	Return the extended year on the Gregorian calendar as computed by `computeGregorianFields()`.
int32_t	getGregorianMonth () const
	Return the month (0-based) on the Gregorian calendar as computed by `computeGregorianFields()`.
int32_t	getGregorianDayOfYear () const
	Return the day of year (1-based) on the Gregorian calendar as computed by `computeGregorianFields()`.
int32_t	getGregorianDayOfMonth () const
	Return the day of month (1-based) on the Gregorian calendar as computed by `computeGregorianFields()`.
virtual int32_t	getDefaultMonthInYear ()
	Called by computeJulianDay.
virtual int32_t	getDefaultDayInMonth (int32_t)
	Called by computeJulianDay.
virtual void	pinField (UCalendarDateFields field, UErrorCode &status)
	Adjust the specified field so that it is within the allowable range for the date to which this calendar is set.
int32_t	weekNumber (int32_t desiredDay, int32_t dayOfPeriod, int32_t dayOfWeek)
	Return the week number of a day, within a period.
int32_t	weekNumber (int32_t dayOfPeriod, int32_t dayOfWeek)
	Return the week number of a day, within a period.
int32_t	getLocalDOW ()
	returns the local DOW, valid range 0.
void	computeGregorianFields (int32_t julianDay, UErrorCode &ec)
	Compute the Gregorian calendar year, month, and day of month from the Julian day.
Static Protected Member Functions
static uint8_t	julianDayToDayOfWeek (double julian)
	Convert a quasi Julian date to the day of the week.
Protected Attributes
UBool	fIsTimeSet
	The flag which indicates if the current time is set in the calendar.
UBool	fAreFieldsSet
	True if the fields are in sync with the currently set time of this Calendar.
UBool	fAreAllFieldsSet
	True if all of the fields have been set.
UBool	fAreFieldsVirtuallySet
	True if all fields have been virtually set, but have not yet been computed.
int32_t	fFields [UCAL_FIELD_COUNT]
	The time fields containing values into which the millis is computed.
UBool	fIsSet [UCAL_FIELD_COUNT]
	The flags which tell if a specified time field for the calendar is set.
int32_t	fStamp [UCAL_FIELD_COUNT]
	Pseudo-time-stamps which specify when each field was set.
Static Protected Attributes
static const UFieldResolutionTable	kDatePrecedence []
	Precedence table for Dates.
static const UFieldResolutionTable	kYearPrecedence []
	Precedence table for Year.
static const UFieldResolutionTable	kDOWPrecedence []
	Precedence table for Day of Week.
Friends
class	CalendarFactory
	Multiple Calendar Implementation.
class	CalendarService
	Multiple Calendar Implementation.
class	DefaultCalendarFactory
	Multiple Calendar Implementation.

Detailed Description

Calendar is an abstract base class for converting between a UDate object and a set of integer fields such as YEAR, MONTH, DAY, HOUR, and so on.

(A UDate object represents a specific instant in time with millisecond precision. See UDate for information about the UDate class.)

Subclasses of Calendar interpret a UDate according to the rules of a specific calendar system. The most commonly used subclass of Calendar is GregorianCalendar. Other subclasses could represent the various types of lunar calendars in use in many parts of the world.

NOTE: (ICU 2.6) The subclass interface should be considered unstable

it WILL change.

Like other locale-sensitive classes, Calendar provides a static method, createInstance, for getting a generally useful object of this type. Calendar's createInstance method returns the appropriate Calendar subclass whose time fields have been initialized with the current date and time:

 Calendar *rightNow = Calendar::createInstance(errCode);

A Calendar object can produce all the time field values needed to implement the date-time formatting for a particular language and calendar style (for example, Japanese-Gregorian, Japanese-Traditional).

When computing a UDate from time fields, two special circumstances may arise: there may be insufficient information to compute the UDate (such as only year and month but no day in the month), or there may be inconsistent information (such as "Tuesday, July 15, 1996" -- July 15, 1996 is actually a Monday).

Insufficient information. The calendar will use default information to specify the missing fields. This may vary by calendar; for the Gregorian calendar, the default for a field is the same as that of the start of the epoch: i.e., YEAR = 1970, MONTH = JANUARY, DATE = 1, etc.

Inconsistent information. If fields conflict, the calendar will give preference to fields set more recently. For example, when determining the day, the calendar will look for one of the following combinations of fields. The most recent combination, as determined by the most recently set single field, will be used.

 MONTH + DAY_OF_MONTH
 MONTH + WEEK_OF_MONTH + DAY_OF_WEEK
 MONTH + DAY_OF_WEEK_IN_MONTH + DAY_OF_WEEK
 DAY_OF_YEAR
 DAY_OF_WEEK + WEEK_OF_YEAR

For the time of day:

 HOUR_OF_DAY
 AM_PM + HOUR

Note: for some non-Gregorian calendars, different fields may be necessary for complete disambiguation. For example, a full specification of the historial Arabic astronomical calendar requires year, month, day-of-month and day-of-week in some cases.

Note: There are certain possible ambiguities in interpretation of certain singular times, which are resolved in the following ways:

24:00:00 "belongs" to the following day. That is, 23:59 on Dec 31, 1969 < 24:00 on Jan 1, 1970 < 24:01:00 on Jan 1, 1970
Although historically not precise, midnight also belongs to "am", and noon belongs to "pm", so on the same day, 12:00 am (midnight) < 12:01 am, and 12:00 pm (noon) < 12:01 pm

The date or time format strings are not part of the definition of a calendar, as those must be modifiable or overridable by the user at runtime. Use DateFormat to format dates.

Calendar provides an API for field "rolling", where fields can be incremented or decremented, but wrap around. For example, rolling the month up in the date December 12, 1996 results in January 12, 1996.

Calendar also provides a date arithmetic function for adding the specified (signed) amount of time to a particular time field. For example, subtracting 5 days from the date September 12, 1996 results in September 7, 1996.

Stable:: ICU 2.0

Definition at line 165 of file calendar.h.

Member Enumeration Documentation

enum Calendar::EDateFields

Field IDs for date and time.

Used to specify date/time fields. ERA is calendar specific. Example ranges given are for illustration only; see specific Calendar subclasses for actual ranges.

Deprecated:: ICU 2.6. Use C enum UCalendarDateFields defined in ucal.h

Definition at line 174 of file calendar.h.

enum Calendar::EDaysOfWeek

Useful constant for days of week.

Note: Calendar day-of-week is 1-based. Clients who create locale resources for the field of first-day-of-week should be aware of this. For instance, in US locale, first-day-of-week is set to 1, i.e., SUNDAY.

Deprecated:: ICU 2.6. Use C enum UCalendarDaysOfWeek defined in ucal.h

Definition at line 211 of file calendar.h.

enum Calendar::EMonths

Useful constants for month.

Note: Calendar month is 0-based.

Deprecated:: ICU 2.6. Use C enum UCalendarMonths defined in ucal.h

Definition at line 227 of file calendar.h.

enum Calendar::EAmpm

Useful constants for hour in 12-hour clock.

Used in GregorianCalendar.

Deprecated:: ICU 2.6. Use C enum UCalendarAMPMs defined in ucal.h

Definition at line 249 of file calendar.h.

enum Calendar::ELimitType [protected]

Limit enums.

Not in sync with UCalendarLimitType (refers to internal fields).

Internal:: Do not use. This API is for internal use only.

Definition at line 1339 of file calendar.h.

anonymous enum [protected]

Values for field resolution tables.

See also:: resolveFields

Internal:: Do not use. This API is for internal use only.

Enumerator:

kResolveSTOP	Marker for end of resolve set (row or group).
kResolveRemap	Value to be bitwised "ORed" against resolve table field values for remapping. Example: (UCAL_DATE \| kResolveRemap) in 1st column will cause 'UCAL_DATE' to be returned, but will not examine the value of UCAL_DATE.

Definition at line 1489 of file calendar.h.

anonymous enum [protected]

Special values of stamp[].

Stable:: ICU 2.0

Definition at line 1639 of file calendar.h.

Constructor & Destructor Documentation

virtual Calendar::~Calendar ( ) [virtual]

destructor

Stable:: ICU 2.0

Calendar::Calendar ( UErrorCode & success ) [protected]

Constructs a Calendar with the default time zone as returned by TimeZone::createInstance(), and the default locale.

Parameters:

success

Indicates the status of Calendar object construction. Returns U_ZERO_ERROR if constructed successfully.

Stable:: ICU 2.0

Calendar::Calendar ( const Calendar & source ) [protected]

Copy constructor.

Parameters:

source

Calendar object to be copied from

Stable:: ICU 2.0

Calendar::Calendar	(	TimeZone *	zone,
		const Locale &	aLocale,
		UErrorCode &	success
	)			`[protected]`

Constructs a Calendar with the given time zone and locale.

Clients are no longer responsible for deleting the given time zone object after it's adopted.

Parameters:

	zone	The given time zone.
	aLocale	The given locale.
	success	Indicates the status of Calendar object construction. Returns U_ZERO_ERROR if constructed successfully.

Stable:: ICU 2.0

Calendar::Calendar	(	const TimeZone &	zone,
		const Locale &	aLocale,
		UErrorCode &	success
	)			`[protected]`

Constructs a Calendar with the given time zone and locale.

Parameters:

	zone	The given time zone.
	aLocale	The given locale.
	success	Indicates the status of Calendar object construction. Returns U_ZERO_ERROR if constructed successfully.

Stable:: ICU 2.0

Member Function Documentation

virtual Calendar* Calendar::clone ( void ) const [pure virtual]

Create and return a polymorphic copy of this calendar.

Returns:: a polymorphic copy of this calendar.

Stable:: ICU 2.0

Implemented in GregorianCalendar.

static Calendar* Calendar::createInstance ( UErrorCode & success ) [static]

Creates a Calendar using the default timezone and locale.

Clients are responsible for deleting the object returned.

Parameters:

success

Indicates the success/failure of Calendar creation. Filled in with U_ZERO_ERROR if created successfully, set to a failure result otherwise. U_MISSING_RESOURCE_ERROR will be returned if the resource data requests a calendar type which has not been installed.

Returns:: A Calendar if created successfully. NULL otherwise.

Stable:: ICU 2.0

Referenced by createInstance().

Calendar * Calendar::createInstance	(	TimeZone *	zoneToAdopt,
		UErrorCode &	success
	)			`[inline, static]`

Creates a Calendar using the given timezone and the default locale.

The Calendar takes ownership of zoneToAdopt; the client must not delete it.

Parameters:

	zoneToAdopt	The given timezone to be adopted.
	success	Indicates the success/failure of Calendar creation. Filled in with U_ZERO_ERROR if created successfully, set to a failure result otherwise.

Returns:: A Calendar if created successfully. NULL otherwise.

Stable:: ICU 2.0

Definition at line 2124 of file calendar.h.

References createInstance(), and Locale::getDefault().

static Calendar* Calendar::createInstance	(	const TimeZone &	zone,
		UErrorCode &	success
	)			`[static]`

Creates a Calendar using the given timezone and the default locale.

The TimeZone is _not_ adopted; the client is still responsible for deleting it.

Parameters:

	zone	The timezone.
	success	Indicates the success/failure of Calendar creation. Filled in with U_ZERO_ERROR if created successfully, set to a failure result otherwise.

Returns:: A Calendar if created successfully. NULL otherwise.

Stable:: ICU 2.0

static Calendar* Calendar::createInstance	(	const Locale &	aLocale,
		UErrorCode &	success
	)			`[static]`

Creates a Calendar using the default timezone and the given locale.

Parameters:

	aLocale	The given locale.
	success	Indicates the success/failure of Calendar creation. Filled in with U_ZERO_ERROR if created successfully, set to a failure result otherwise.

Returns:: A Calendar if created successfully. NULL otherwise.

Stable:: ICU 2.0

static Calendar* Calendar::createInstance	(	TimeZone *	zoneToAdopt,
		const Locale &	aLocale,
		UErrorCode &	success
	)			`[static]`

Creates a Calendar using the given timezone and given locale.

The Calendar takes ownership of zoneToAdopt; the client must not delete it.

Parameters:

	zoneToAdopt	The given timezone to be adopted.
	aLocale	The given locale.
	success	Indicates the success/failure of Calendar creation. Filled in with U_ZERO_ERROR if created successfully, set to a failure result otherwise.

Returns:: A Calendar if created successfully. NULL otherwise.

Stable:: ICU 2.0

static Calendar* Calendar::createInstance	(	const TimeZone &	zoneToAdopt,
		const Locale &	aLocale,
		UErrorCode &	success
	)			`[static]`

Gets a Calendar using the given timezone and given locale.

The TimeZone is _not_ adopted; the client is still responsible for deleting it.

Parameters:

	zoneToAdopt	The given timezone to be adopted.
	aLocale	The given locale.
	success	Indicates the success/failure of Calendar creation. Filled in with U_ZERO_ERROR if created successfully, set to a failure result otherwise.

Returns:: A Calendar if created successfully. NULL otherwise.

Stable:: ICU 2.0

static const Locale* Calendar::getAvailableLocales ( int32_t & count ) [static]

Returns a list of the locales for which Calendars are installed.

Parameters:

count

Number of locales returned.

Returns:: An array of Locale objects representing the set of locales for which Calendars are installed. The system retains ownership of this list; the caller must NOT delete it. Does not include user-registered Calendars.

Stable:: ICU 2.0

static UDate Calendar::getNow ( void ) [static]

Returns the current UTC (GMT) time measured in milliseconds since 0:00:00 on 1/1/70 (derived from the system time).

Returns:: The current UTC time in milliseconds.

Stable:: ICU 2.0

UDate Calendar::getTime ( UErrorCode & status ) const [inline]

Gets this Calendar's time as milliseconds.

May involve recalculation of time due to previous calls to set time field values. The time specified is non-local UTC (GMT) time. Although this method is const, this object may actually be changed (semantically const).

Parameters:

status

Output param set to success/failure code on exit. If any value previously set in the time field is invalid or restricted by leniency, this will be set to an error status.

Returns:: The current time in UTC (GMT) time, or zero if the operation failed.

Stable:: ICU 2.0

Definition at line 384 of file calendar.h.

void Calendar::setTime	(	UDate	date,
		UErrorCode &	status
	)			`[inline]`

Sets this Calendar's current time with the given UDate.

The time specified should be in non-local UTC (GMT) time.

Parameters:

	date	The given UDate in UTC (GMT) time.
	status	Output param set to success/failure code on exit. If any value set in the time field is invalid or restricted by leniency, this will be set to an error status.

Stable:: ICU 2.0

Definition at line 396 of file calendar.h.

virtual UBool Calendar::operator== ( const Calendar & that ) const [virtual]

Compares the equality of two Calendar objects.

Objects of different subclasses are considered unequal. This comparison is very exacting; two Calendar objects must be in exactly the same state to be considered equal. To compare based on the represented time, use equals() instead.

Parameters:

that

The Calendar object to be compared with.

Returns:: True if the given Calendar is the same as this Calendar; false otherwise.

Stable:: ICU 2.0

UBool Calendar::operator!= ( const Calendar & that ) const [inline]

Compares the inequality of two Calendar objects.

Parameters:

that

The Calendar object to be compared with.

Returns:: True if the given Calendar is not the same as this Calendar; false otherwise.

Stable:: ICU 2.0

Definition at line 419 of file calendar.h.

virtual UBool Calenda

Calendar Class Reference

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