Package org.joda.time.chrono

Class BasicGJChronology

java.lang.Object

org.joda.time.Chronology

org.joda.time.chrono.BaseChronology

org.joda.time.chrono.AssembledChronology

org.joda.time.chrono.BasicChronology

org.joda.time.chrono.BasicGJChronology

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

GregorianChronology, JulianChronology

abstract class BasicGJChronology
extends BasicChronology

Abstract Chronology for implementing chronologies based on Gregorian/Julian formulae. Most of the utility methods required by subclasses are package-private, reflecting the intention that they be defined in the same package.

BasicGJChronology is thread-safe and immutable, and all subclasses must be as well.

Since:

1.2, refactored from CommonGJChronology

Nested Class Summary

Nested classes/interfaces inherited from class org.joda.time.chrono.AssembledChronology

AssembledChronology.Fields

Field Summary

Fields

Modifier and Type	Field	Description
private static final long	FEB_29
private static final int[]	MAX_DAYS_PER_MONTH_ARRAY
private static final long[]	MAX_TOTAL_MILLIS_BY_MONTH_ARRAY
private static final int[]	MIN_DAYS_PER_MONTH_ARRAY
private static final long[]	MIN_TOTAL_MILLIS_BY_MONTH_ARRAY
private static final long	serialVersionUID	Serialization lock

Constructor Summary

Constructors

Constructor	Description
BasicGJChronology(Chronology base, Object param, int minDaysInFirstWeek)	Constructor.

Method Summary

Modifier and Type	Method	Description
(package private) int	getDaysInMonthMax(int month)	Gets the maximum days in the specified month.
(package private) int	getDaysInMonthMaxForSet(long instant, int value)	Gets the maximum number of days in the month specified by the instant.
(package private) int	getDaysInYearMonth(int year, int month)	Gets the number of days in the specified month and year.
(package private) int	getMonthOfYear(long millis, int year)
(package private) long	getTotalMillisByYearMonth(int year, int month)	Gets the total number of millis elapsed in this year at the start of the specified month, such as zero for month 1.
(package private) long	getYearDifference(long minuendInstant, long subtrahendInstant)	Gets the difference between the two instants in years.
(package private) boolean	isLeapDay(long instant)	Is the specified instant a leap day?
(package private) long	setYear(long instant, int year)	Sets the year from an instant and year.

Methods inherited from class org.joda.time.chrono.BasicChronology

assemble, calculateFirstDayOfYearMillis, equals, getApproxMillisAtEpochDividedByTwo, getAverageMillisPerMonth, getAverageMillisPerYear, getAverageMillisPerYearDividedByTwo, getDateMidnightMillis, getDateTimeMillis, getDateTimeMillis, getDayOfMonth, getDayOfMonth, getDayOfMonth, getDayOfWeek, getDayOfYear, getDayOfYear, getDaysInMonthMax, getDaysInMonthMax, getDaysInYear, getDaysInYearMax, getFirstWeekOfYearMillis, getMaxMonth, getMaxMonth, getMaxYear, getMillisOfDay, getMinimumDaysInFirstWeek, getMinYear, getMonthOfYear, getWeekOfWeekyear, getWeekOfWeekyear, getWeeksInYear, getWeekyear, getYear, getYearMillis, getYearMonthDayMillis, getYearMonthMillis, getZone, hashCode, isLeapYear, toString

Methods inherited from class org.joda.time.chrono.AssembledChronology

centuries, centuryOfEra, clockhourOfDay, clockhourOfHalfday, dayOfMonth, dayOfWeek, dayOfYear, days, era, eras, getBase, getDateTimeMillis, getParam, halfdayOfDay, halfdays, hourOfDay, hourOfHalfday, hours, millis, millisOfDay, millisOfSecond, minuteOfDay, minuteOfHour, minutes, monthOfYear, months, secondOfDay, secondOfMinute, seconds, weekOfWeekyear, weeks, weekyear, weekyearOfCentury, weekyears, year, yearOfCentury, yearOfEra, years

Methods inherited from class org.joda.time.chrono.BaseChronology

add, add, get, get, get, set, validate, withUTC, withZone

Methods inherited from class java.lang.Object

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

Field Details

serialVersionUID

private static final long serialVersionUID

Serialization lock

See Also:

• Constant Field Values

MIN_DAYS_PER_MONTH_ARRAY

private static final int[] MIN_DAYS_PER_MONTH_ARRAY

MAX_DAYS_PER_MONTH_ARRAY

private static final int[] MAX_DAYS_PER_MONTH_ARRAY

MIN_TOTAL_MILLIS_BY_MONTH_ARRAY

private static final long[] MIN_TOTAL_MILLIS_BY_MONTH_ARRAY

MAX_TOTAL_MILLIS_BY_MONTH_ARRAY

private static final long[] MAX_TOTAL_MILLIS_BY_MONTH_ARRAY

FEB_29

private static final long FEB_29

See Also:

• Constant Field Values

Constructor Details

BasicGJChronology

BasicGJChronology(Chronology base,
 Object param,
 int minDaysInFirstWeek)

Constructor.

Method Details

isLeapDay

boolean isLeapDay(long instant)

Description copied from class: BasicChronology

Is the specified instant a leap day?

Overrides:

isLeapDay in class BasicChronology

Parameters:

instant - the instant to test

Returns:

true if leap, default is false

getMonthOfYear

int getMonthOfYear(long millis,
 int year)

Specified by:

getMonthOfYear in class BasicChronology

Parameters:

millis - from 1970-01-01T00:00:00Z

year - precalculated year of millis

getDaysInYearMonth

int getDaysInYearMonth(int year,
 int month)

Gets the number of days in the specified month and year.

Specified by:

getDaysInYearMonth in class BasicChronology

Parameters:

year - the year

month - the month

Returns:

the number of days

getDaysInMonthMax

int getDaysInMonthMax(int month)

Description copied from class: BasicChronology

Gets the maximum days in the specified month.

Specified by:

getDaysInMonthMax in class BasicChronology

Parameters:

month - the month

Returns:

the max days

getDaysInMonthMaxForSet

int getDaysInMonthMaxForSet(long instant,
 int value)

Description copied from class: BasicChronology

Gets the maximum number of days in the month specified by the instant. The value represents what the user is trying to set, and can be used to optimise this method.

Overrides:

getDaysInMonthMaxForSet in class BasicChronology

Parameters:

instant - millis from 1970-01-01T00:00:00Z

value - the value being set

Returns:

the maximum number of days in the month

getTotalMillisByYearMonth

long getTotalMillisByYearMonth(int year,
 int month)

Description copied from class: BasicChronology

Gets the total number of millis elapsed in this year at the start of the specified month, such as zero for month 1.

Specified by:

getTotalMillisByYearMonth in class BasicChronology

Parameters:

year - the year

month - the month

Returns:

the elapsed millis at the start of the month

getYearDifference

long getYearDifference(long minuendInstant,
 long subtrahendInstant)

Description copied from class: BasicChronology

Gets the difference between the two instants in years.

Specified by:

getYearDifference in class BasicChronology

Parameters:

minuendInstant - the first instant

subtrahendInstant - the second instant

Returns:

the difference

setYear

long setYear(long instant,
 int year)

Description copied from class: BasicChronology

Sets the year from an instant and year.

Specified by:

setYear in class BasicChronology

Parameters:

instant - millis from 1970-01-01T00:00:00Z

year - the year to set

Returns:

the updated millis