/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
* <p>
* 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.
* <p>
* This is not 100% true for minutes.
* Minutes can be 59, 60 or 61 seconds long (due to leap seconds.)
* <p>
* 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 tug@wilson.co.uk
*/
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();
}
};
}
}