/*
* Copyright (c) 2004, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package sun.tools.jstat;
import java.util.*;
/**
* A typesafe enumeration for describing data scaling semantics
*
* @author Brian Doherty
* @since 1.5
*/
public class Scale {
private static int nextOrdinal = 0;
private static HashMap<String, Scale> map = new HashMap<String, Scale>();
private final String name;
private final int ordinal = nextOrdinal++;
private final double factor;
private Scale(String name, double factor) {
this.name = name;
this.factor = factor;
assert !map.containsKey(name);
map.put(name, this);
}
/**
* Scale representing a no scaling
*/
public static final Scale RAW = new Scale("raw", 1);
/**
* Scale representing a percent scaling
*/
public static final Scale PERCENT = new Scale("percent", 1/100);
/**
* Scale representing a kilo scaling
*/
public static final Scale KILO = new Scale("K", 1024);
/**
* Scale representing a mega scaling
*/
public static final Scale MEGA = new Scale("M", 1024*1024);
/**
* Scale representing a giga scaling
*/
public static final Scale GIGA = new Scale("G", 1024*1024*1024);
/**
* Scale representing a tera scaling
*/
public static final Scale TERA = new Scale("T", 1024*1024*1024*1024);
/**
* Scale representing a tera scaling
*/
public static final Scale PETA = new Scale("P", 1024*1024*1024*1024*1024);
/**
* Scale representing a pico scaling
*/
public static final Scale PICO = new Scale("p", 10.0E-12);
/**
* Scale representing a nano scaling
*/
public static final Scale NANO = new Scale("n", 10.0E-9);
/**
* Scale representing a micro scaling
*/
public static final Scale MICRO = new Scale("u", 10.0E-6);
/**
* Scale representing a milli scaling
*/
public static final Scale MILLI = new Scale("m", 10.0E-3);
/**
* Scale representing a picosecond scaling
*/
public static final Scale PSEC = new Scale("ps", 10.0E-12);
/**
* Scale representing a nanosecond scaling
*/
public static final Scale NSEC = new Scale("ns", 10.0E-9);
/**
* Scale representing a microsecond scaling
*/
public static final Scale USEC = new Scale("us", 10.0E-6);
/**
* Scale representing a millisecond scaling
*/
public static final Scale MSEC = new Scale("ms", 10.0E-3);
/**
* Scale representing a second scaling
*/
public static final Scale SEC = new Scale("s", 1);
public static final Scale SEC2 = new Scale("sec", 1);
/**
* Scale representing a minutes scaling
*/
public static final Scale MINUTES = new Scale("min", 1/60.0);
/**
* Scale representing a hours scaling
*/
public static final Scale HOUR = new Scale("h", 1/(60.0*60.0));
public static final Scale HOUR2 = new Scale("hour", 1/(60.0*60.0));
/**
* Returns the scaling factor of this Scale object
*
* @return the scaling factor of this Scale object
*/
public double getFactor() {
return factor;
}
/**
* Returns the string representation of this Scale object.
* The string representation is the name of the Scale object.
*
* @return the string representation of this Scale object
*/
public String toString() {
return name;
}
/**
* Maps a string to its corresponding Scale object.
*
* @param s a string to match against Scale objects.
* @return The Scale object matching the given string.
*/
public static Scale toScale(String s) {
return map.get(s);
}
/**
* Returns an enumeration of the keys for this enumerated type
*
* @param s an string to match against Scale objects.
* @return The Scale object matching the given string.
*/
protected static Set keySet() {
return map.keySet();
}
protected double scale(double value) {
return value/factor;
}
}