groovy.time.TimeDuration Maven / Gradle / Ivy
/*
* 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;
/**
* TimeDuration represents time periods expressed in units of hours, minutes,
* seconds and milliseconds.
*
* Whilst we can't say how long a month is without knowing the year and the name of the month,
* we know how long a second is independent of the date.
*
* This is not 100% true for minutes.
* Minutes can be 59, 60 or 61 seconds long (due to leap seconds.)
*
* If you ask Duration to convert itself to milliseconds then it will work on the basis of 60 seconds in a minute.
* If you add or subtract it from a date it will take leap seconds into account.
*
* @author John Wilson [email protected]
*/
public class TimeDuration extends Duration {
public TimeDuration(final int hours, final int minutes, final int seconds, final int millis) {
super(0, hours, minutes, seconds, millis);
}
public TimeDuration(final int days, final int hours, final int minutes, final int seconds, final int millis) {
super(days, hours, minutes, seconds, millis);
}
public Duration plus(final Duration rhs) {
return new TimeDuration(this.getDays() + rhs.getDays(), this.getHours() + rhs.getHours(),
this.getMinutes() + rhs.getMinutes(), this.getSeconds() + rhs.getSeconds(),
this.getMillis() + rhs.getMillis());
}
public DatumDependentDuration plus(final DatumDependentDuration rhs) {
return new TimeDatumDependentDuration(rhs.getYears(), rhs.getMonths(),
this.getDays() + rhs.getDays(), this.getHours() + rhs.getHours(),
this.getMinutes() + rhs.getMinutes(), this.getSeconds() + rhs.getSeconds(),
this.getMillis() + rhs.getMillis());
}
public Duration minus(final Duration rhs) {
return new TimeDuration(this.getDays() - rhs.getDays(), this.getHours() - rhs.getHours(),
this.getMinutes() - rhs.getMinutes(), this.getSeconds() - rhs.getSeconds(),
this.getMillis() - rhs.getMillis());
}
public DatumDependentDuration minus(final DatumDependentDuration rhs) {
return new TimeDatumDependentDuration(-rhs.getYears(), -rhs.getMonths(),
this.getDays() - rhs.getDays(), this.getHours() - rhs.getHours(),
this.getMinutes() - rhs.getMinutes(), this.getSeconds() - rhs.getSeconds(),
this.getMillis() - rhs.getMillis());
}
public Date getAgo() {
final Calendar cal = Calendar.getInstance();
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());
return cal.getTime();
}
public From getFrom() {
return new From() {
public Date getNow() {
final Calendar cal = Calendar.getInstance();
cal.add(Calendar.DAY_OF_YEAR, TimeDuration.this.getDays());
cal.add(Calendar.HOUR_OF_DAY, TimeDuration.this.getHours());
cal.add(Calendar.MINUTE, TimeDuration.this.getMinutes());
cal.add(Calendar.SECOND, TimeDuration.this.getSeconds());
cal.add(Calendar.MILLISECOND, TimeDuration.this.getMillis());
return cal.getTime();
}
};
}
}