/*
* -----------------------------------------------------------------------
* Copyright © 2013-2015 Meno Hochschild, <http://www.menodata.de/>
* -----------------------------------------------------------------------
* This file (PrecisionElement.java) is part of project Time4J.
*
* Time4J is free software: You can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 2.1 of the License, or
* (at your option) any later version.
*
* Time4J is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Time4J. If not, see <http://www.gnu.org/licenses/>.
* -----------------------------------------------------------------------
*/
package net.time4j;
import net.time4j.engine.ChronoDisplay;
import net.time4j.engine.ChronoElement;
import java.io.ObjectStreamException;
import java.util.concurrent.TimeUnit;
/**
* <p>Das Element für die Genauigkeit einer Uhrzeitangabe. </p>
*
* @author Meno Hochschild
*/
class PrecisionElement<U extends Comparable<U>>
implements ChronoElement<U> {
//~ Statische Felder/Initialisierungen --------------------------------
static final ChronoElement<ClockUnit> CLOCK_PRECISION =
new PrecisionElement<>(ClockUnit.class, ClockUnit.HOURS, ClockUnit.NANOS);
static final ChronoElement<TimeUnit> TIME_PRECISION =
new PrecisionElement<>(TimeUnit.class, TimeUnit.DAYS, TimeUnit.NANOSECONDS);
//~ Instanzvariablen --------------------------------------------------
private final Class<U> type;
private transient final U min;
private transient final U max;
//~ Konstruktoren -----------------------------------------------------
private PrecisionElement(
Class<U> type,
U min,
U max
) {
super();
this.type = type;
this.min = min;
this.max = max;
}
//~ Methoden ----------------------------------------------------------
@Override
public String name() {
return "PRECISION";
}
@Override
public Class<U> getType() {
return this.type;
}
@Override
public U getDefaultMinimum() {
return this.min;
}
@Override
public U getDefaultMaximum() {
return this.max;
}
@Override
public boolean isDateElement() {
return false;
}
@Override
public boolean isTimeElement() {
return true;
}
@Override
public int compare(
ChronoDisplay o1,
ChronoDisplay o2
) {
U u1 = o1.get(this);
U u2 = o2.get(this);
if (this.type == ClockUnit.class) {
return u1.compareTo(u2);
} else {
return u2.compareTo(u1);
}
}
@Override
public char getSymbol() {
return '\u0000';
}
@Override
public boolean isLenient() {
return false;
}
/**
* @serialData serves for singleton semantic
* @return replacement object
*/
private Object readResolve() {
return ((this.type == ClockUnit.class) ? CLOCK_PRECISION : TIME_PRECISION);
}
}