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With inspiration from other libraries
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html#License
/*
*******************************************************************************
* Copyright (C) 1996-2011, International Business Machines Corporation and *
* others. All Rights Reserved. *
*******************************************************************************
*/
package com.ibm.icu.util;
import java.util.Date;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
import com.ibm.icu.util.ULocale.Category;
/**
* Note: The Holiday framework is a technology preview.
* Despite its age, is still draft API, and clients should treat it as such.
*
* An abstract class representing a holiday.
* @draft ICU 2.8 (retainAll)
* @provisional This API might change or be removed in a future release.
*/
public abstract class Holiday implements DateRule
{
/**
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
public static Holiday[] getHolidays()
{
return getHolidays(ULocale.getDefault(Category.FORMAT));
}
/**
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
public static Holiday[] getHolidays(Locale locale)
{
return getHolidays(ULocale.forLocale(locale));
}
/**
* @draft ICU 3.2
* @provisional This API might change or be removed in a future release.
*/
public static Holiday[] getHolidays(ULocale locale)
{
Holiday[] result = noHolidays;
try {
ResourceBundle bundle = UResourceBundle.getBundleInstance("com.ibm.icu.impl.data.HolidayBundle", locale);
result = (Holiday[]) bundle.getObject("holidays");
}
catch (MissingResourceException e) {
}
return result;
}
/**
* Return the first occurrence of this holiday on or after the given date
*
* @param start Only holidays on or after this date are returned.
*
* @return The date on which this holiday occurs, or null if it
* does not occur on or after the start date.
*
* @see #firstBetween
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
@Override
public Date firstAfter(Date start) {
return rule.firstAfter(start);
}
/**
* Return the first occurrence of this holiday that is on or after
* the given start date and before the given end date.
*
* @param start Only occurrences on or after this date are returned.
* @param end Only occurrences before this date are returned.
*
* @return The date on which this event occurs, or null if it
* does not occur between the start and end dates.
*
* @see #firstAfter
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
@Override
public Date firstBetween(Date start, Date end) {
return rule.firstBetween(start, end);
}
/**
* Checks whether this holiday falls on the given date. This does
* not take time of day into account; instead it checks
* whether the holiday and the given date are on the same day.
*
* @param date The date to check.
* @return true if this holiday occurs on the given date.
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
@Override
public boolean isOn(Date date) {
//System.out.println(name + ".isOn(" + date.toString() + "):");
return rule.isOn(date);
}
/**
* Check whether this holiday occurs at least once between the two
* dates given.
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
@Override
public boolean isBetween(Date start, Date end) {
return rule.isBetween(start, end);
}
/**
* Construct a new Holiday object. This is for use by subclasses only.
* This constructs a new holiday with the given name and date rules.
*
* @param name The name of this holiday. The getDisplayName method
* uses this string as a key to look up the holiday's name a
* resource bundle object named HolidayBundle.
*
* @param rule The date rules used for determining when this holiday
* falls. Holiday's implementation of the DateRule interface
* simply delegates to this DateRule object.
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
protected Holiday(String name, DateRule rule)
{
this.name = name;
this.rule = rule;
}
/**
* Return the name of this holiday in the language of the default DISPLAY locale.
* @see Category#DISPLAY
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
public String getDisplayName() {
return getDisplayName(ULocale.getDefault(Category.DISPLAY));
}
/**
* Return the name of this holiday in the language of the specified locale.
* The name parameter passed to this object's constructor is used
* as a key to look up the holiday's localized name in a ResourceBundle object
* named HolidayBundle.
*
* @param locale A locale specifying the language in which the name is desired.
*
* @see ResourceBundle
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
public String getDisplayName(Locale locale)
{
return getDisplayName(ULocale.forLocale(locale));
}
/**
* Return the name of this holiday in the language of the specified locale
* The name parameter passed to this object's constructor is used
* as a key to look up the holiday's localized name in a ResourceBundle object
* named HolidayBundle.
*
* @param locale A locale specifying the language in which the name is desired.
*
* @see ResourceBundle
* @draft ICU 3.2
* @provisional This API might change or be removed in a future release.
*/
public String getDisplayName(ULocale locale)
{
String dispName = name;
try {
ResourceBundle bundle = UResourceBundle.getBundleInstance("com.ibm.icu.impl.data.HolidayBundle", locale);
dispName = bundle.getString(name);
}
catch (MissingResourceException e) {
}
return dispName;
}
/**
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
public DateRule getRule() {
return rule;
}
/**
* @draft ICU 2.8
* @provisional This API might change or be removed in a future release.
*/
public void setRule(DateRule rule) {
this.rule = rule;
}
private String name;
private DateRule rule;
private static Holiday[] noHolidays = {};
}