Module org.holiday.calendar.core

Package org.holiday.calendar.function

Class DateRolls

java.lang.Object

org.holiday.calendar.function.DateRolls

public final class DateRolls
extends Object

Factory providing common DateRoll strategies.

Author:

Dave Joyce

Method Summary

Modifier and Type	Method	Description
static DateRoll	compose(DateRoll first, DateRoll second)	Compose two rolls: apply first, then apply second.
static DateRoll	followingMonday()	Saturday and Sunday both roll forward to Monday.
static DateRoll	noRoll()	No adjustment — returns the date unchanged.
static DateRoll	previousFridayOrFollowingMonday()	Saturday rolls back to Friday; Sunday rolls forward to Monday.
static DateRoll	sundayToMonday()	Only Sunday rolls forward to the following Monday; Saturday is returned unchanged (no substitute observance).

Methods inherited from class java.lang.Object

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

Method Details

noRoll

public static DateRoll noRoll()

No adjustment — returns the date unchanged.

previousFridayOrFollowingMonday

public static DateRoll previousFridayOrFollowingMonday()

Saturday rolls back to Friday; Sunday rolls forward to Monday.

followingMonday

public static DateRoll followingMonday()

Saturday and Sunday both roll forward to Monday.

sundayToMonday

public static DateRoll sundayToMonday()

Only Sunday rolls forward to the following Monday; Saturday is returned unchanged (no substitute observance).

Implements the Japanese substitute-holiday rule (振替休日): Article 3, paragraph 2 of the Act on National Holidays (国民の祝日に関する法律, 1948, amended 2007) creates a make-up Monday only when a national holiday falls on Sunday. A Saturday holiday has no substitute — it falls on an already- closed day and is returned at its natural date.

See Also:

• for a roll that advances both Saturday and Sunday

compose

public static DateRoll compose(DateRoll first,
 DateRoll second)

Compose two rolls: apply first, then apply second.