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/*
 * Copyright 2003-2013 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 groovy.time;

import java.util.Calendar;
import java.util.Date;

/**
 * DatumDependentDuration represents durations whose length in milliseconds 
 * cannot be determined without knowing the datum point.
 * 

* I don't know how many days in a year unless I know if it's a leap year or not. *

* I don't know how many days in a month unless I know the name of the month * (and if it's a leap year if the month is February) * * @author John Wilson [email protected] */ public class DatumDependentDuration extends BaseDuration { public DatumDependentDuration(final int years, final int months, final int days, final int hours, final int minutes, final int seconds, final int millis) { super(years, months, days, hours, minutes, seconds, millis); } public int getMonths() { return this.months; } public int getYears() { return this.years; } public DatumDependentDuration plus(final DatumDependentDuration rhs) { return new DatumDependentDuration(this.getYears() + rhs.getYears(), this.getMonths() + rhs.getMonths(), this.getDays() + rhs.getDays(), this.getHours() + rhs.getHours(), this.getMinutes() + rhs.getMinutes(), this.getSeconds() + rhs.getSeconds(), this.getMillis() + rhs.getMillis()); } public DatumDependentDuration plus(final TimeDatumDependentDuration rhs) { return rhs.plus(this); } public DatumDependentDuration plus(final Duration rhs) { return new DatumDependentDuration(this.getYears(), this.getMonths(), this.getDays() + rhs.getDays(), this.getHours() + rhs.getHours(), this.getMinutes() + rhs.getMinutes(), this.getSeconds() + rhs.getSeconds(), this.getMillis() + rhs.getMillis()); } public DatumDependentDuration plus(final TimeDuration rhs) { return rhs.plus(this); } public DatumDependentDuration minus(final DatumDependentDuration rhs) { return new DatumDependentDuration(this.getYears() - rhs.getYears(), this.getMonths() - rhs.getMonths(), this.getDays() - rhs.getDays(), this.getHours() - rhs.getHours(), this.getMinutes() - rhs.getMinutes(), this.getSeconds() - rhs.getSeconds(), this.getMillis() - rhs.getMillis()); } public DatumDependentDuration minus(final Duration rhs) { return new DatumDependentDuration(this.getYears(), this.getMonths(), this.getDays() - rhs.getDays(), this.getHours() - rhs.getHours(), this.getMinutes() - rhs.getMinutes(), this.getSeconds() - rhs.getSeconds(), this.getMillis() - rhs.getMillis()); } /** * @see groovy.time.BaseDuration#toMilliseconds() * * Change the duration into milliseconds, relative to 'now.' Therefore * things like timezone and time of year will affect how this conversion * occurs. */ public long toMilliseconds() { final Date now = new Date(); return TimeCategory.minus(plus(now), now).toMilliseconds(); } public Date getAgo() { final Calendar cal = Calendar.getInstance(); cal.add(Calendar.YEAR, -this.getYears()); cal.add(Calendar.MONTH, -this.getMonths()); cal.add(Calendar.DAY_OF_YEAR, -this.getDays()); cal.add(Calendar.HOUR_OF_DAY, -this.getHours()); cal.add(Calendar.MINUTE, -this.getMinutes()); cal.add(Calendar.SECOND, -this.getSeconds()); cal.add(Calendar.MILLISECOND, -this.getMillis()); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return new Date(cal.getTimeInMillis()); } public From getFrom() { return new From() { public Date getNow() { final Calendar cal = Calendar.getInstance(); cal.add(Calendar.YEAR, DatumDependentDuration.this.getYears()); cal.add(Calendar.MONTH, DatumDependentDuration.this.getMonths()); cal.add(Calendar.DAY_OF_YEAR, DatumDependentDuration.this.getDays()); cal.add(Calendar.HOUR_OF_DAY, DatumDependentDuration.this.getHours()); cal.add(Calendar.MINUTE, DatumDependentDuration.this.getMinutes()); cal.add(Calendar.SECOND, DatumDependentDuration.this.getSeconds()); cal.add(Calendar.MILLISECOND, DatumDependentDuration.this.getMillis()); cal.set(Calendar.HOUR_OF_DAY, 0); cal.set(Calendar.MINUTE, 0); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); return new Date(cal.getTimeInMillis()); } }; } }





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