/*
* Copyright 2008-2014 the original author or authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.kaleidofoundry.core.util;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.Locale;
import org.kaleidofoundry.core.util.locale.LocaleFactory;
/**
* Some helper methods for date
*
* @author jraduget
*/
public abstract class DateHelper {
/**
* @param birthdate
* @return Age from the current date
*/
public static float getAge(final Date birthdate) {
final Locale locale = LocaleFactory.getDefaultFactory().getCurrentLocale();
return getAge(Calendar.getInstance(locale).getTime(), birthdate);
}
/**
* Calculating age from a current date
*
* @param current
* @param birthdate
* @return Age from the current (arg) date
*/
public static float getAge(final Date current, final Date birthdate) {
if (birthdate == null) { return 0; }
if (current == null) {
return getAge(birthdate);
} else {
final Locale locale = LocaleFactory.getDefaultFactory().getCurrentLocale();
final Calendar calend = new GregorianCalendar(locale);
calend.set(Calendar.HOUR_OF_DAY, 0);
calend.set(Calendar.MINUTE, 0);
calend.set(Calendar.SECOND, 0);
calend.set(Calendar.MILLISECOND, 0);
calend.setTimeInMillis(current.getTime() - birthdate.getTime());
float result = 0;
result = calend.get(Calendar.YEAR) - 1970;
result += (float) calend.get(Calendar.MONTH) / (float) 12;
return result;
}
}
/**
* @param date
* @return day month of date
*/
public static int dayMonthOfDate(final Date date) {
if (date == null) { return -1; }
final Locale locale = LocaleFactory.getDefaultFactory().getCurrentLocale();
final Calendar calend = new GregorianCalendar(locale);
calend.setTime(date);
return calend.get(Calendar.DAY_OF_MONTH);
}
/**
* @param date
* @return year of date
*/
public static int yearOfDate(final Date date) {
if (date == null) { return -1; }
final Locale locale = LocaleFactory.getDefaultFactory().getCurrentLocale();
final Calendar calend = new GregorianCalendar(locale);
calend.setTime(date);
return calend.get(Calendar.YEAR);
}
/**
* @param date
* @return month of date
*/
public static int monthOfDate(final Date date) {
if (date == null) { return -1; }
final Locale locale = LocaleFactory.getDefaultFactory().getCurrentLocale();
final Calendar calend = new GregorianCalendar(locale);
calend.setTime(date);
return calend.get(Calendar.MONTH) + 1;
}
/**
* @param day
* @param month between 1 et 12 (french)
* @param year year
* @return Date corresponding to data input (hour, minute, second, ms will be set to zero)
*/
public static Date newDate(final int day, final int month, final int year) {
final Locale locale = LocaleFactory.getDefaultFactory().getCurrentLocale();
final Calendar calend = new GregorianCalendar(locale);
calend.set(Calendar.DATE, day);
calend.set(Calendar.MONTH, month - 1);
calend.set(Calendar.YEAR, year);
calend.set(Calendar.HOUR_OF_DAY, 0);
calend.set(Calendar.MINUTE, 0);
calend.set(Calendar.SECOND, 0);
calend.set(Calendar.MILLISECOND, 0);
return calend.getTime();
}
/**
* @param original original date
* @param field field to add {@link Calendar}.DAY... to the original date arg
* @param amount value to add
* @return new instance of date, computed by adding original date, a month, a year, a minute... (the field arg )
*/
public static Date add(final Date original, final int field, final int amount) {
final Locale locale = LocaleFactory.getDefaultFactory().getCurrentLocale();
final Calendar calendMin = new GregorianCalendar(locale);
calendMin.setTime(original);
calendMin.add(field, amount);
return calendMin.getTime();
}
}