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Groovy: A powerful, dynamic language for the JVM
/*
* Copyright 2003-2007 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;
import org.codehaus.groovy.runtime.TimeCategory;
/**
* 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());
}
/* (non-Javadoc)
* @see groovy.time.BaseDuration#toMilliseconds()
*
* Do our best to change the duration into milliseconds
* We calculate the duration relative to now
*/
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());
//
// SqlDate should not really care about these values but it seems to "remember" them
// so we clear them. We do the adds first in case we get carry into the day field.
//
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return new java.sql.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());
//
// SqlDate should not really care about these values but it seems to "remember" them
// so we clear them. We do the adds first in case we get carry into the day field.
//
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
return new java.sql.Date(cal.getTimeInMillis());
}
};
}
}