org.eclipse.osbp.xtext.functionlibrary.common/src/org/eclipse/osbp/xtext/functionlibrary/common/uomo/MetricMassUnit.java

/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * All rights reserved. This program and the accompanying materials           
 * are made available under the terms of the Eclipse Public License v1.0       
 * which accompanies this distribution, and is available at                  
 * http://www.eclipse.org/legal/epl-v10.html                                 
 *                                                                            
 * Contributors:   
 * Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation 
 */
package org.eclipse.osbp.xtext.functionlibrary.common.uomo;

import static org.eclipse.uomo.units.SI.Prefix.*;
import static org.eclipse.uomo.units.SI.GRAM;
import static org.eclipse.uomo.units.SI.KILOGRAM;

import java.util.LinkedHashSet;
import java.util.Locale;
import java.util.Set;
import java.util.TreeMap;

import org.eclipse.uomo.units.SI;
import org.eclipse.uomo.units.impl.BaseAmount;
import org.eclipse.uomo.units.impl.format.LocalUnitFormatImpl;
import org.eclipse.uomo.units.impl.quantity.MassAmount;
import org.unitsofmeasurement.quantity.Mass;
import org.unitsofmeasurement.unit.Unit;

/**
 * System of metric length units
 */
public class MetricMassUnit extends ASystemOfQuantityUnits<SI,Mass> implements ISystemOfQuantityUnits<SI,Mass> {

	protected MetricMassUnit() {
		super("Metric Length Units", SI.class, Mass.class, MassAmount.class);
	}
	
	protected final static TreeMap<Double,Unit<?>> sUnits = new TreeMap<Double,Unit<?>> ();
	protected static MetricMassUnit INSTANCE = new MetricMassUnit();

	private static LocalUnitFormatImpl formatUS = LocalUnitFormatImpl.getInstance(Locale.US);
	public final static Unit<Mass> KG  = SI.addUnit(KILOGRAM).asType(Mass.class);
	public final static Unit<Mass> G  = SI.addUnit(GRAM, formatUS.format(GRAM)).asType(Mass.class);
//	public final static Unit<Mass> G  = SI.addUnit(MILLI(KILOGRAM)).asType(Mass.class);
//	public final static Unit<Mass> G  = SI.addUnit(GRAM, "g").asType(Mass.class);
//	public final static Unit<Mass> KG  = SI.addUnit(KILOGRAM, "kg").asType(Mass.class);
//	public final static Unit<Mass> MG  = SI.addUnit(MILLI(GRAM)).asType(Mass.class);
	public final static Unit<Mass> MG  = SI.addUnit(GRAM.divide(1000d), "mg").asType(Mass.class);
//	public final static Unit<Mass> T = SI.addUnit(KILO(KILOGRAM), "t").asType(Mass.class);
	public final static Unit<Mass> T = SI.addUnit(KILOGRAM.multiply(1000d), "t").asType(Mass.class);
	
	static {
		addUnits(sUnits, G, KG, MG, T);
	}
	
	protected final static MetricMassUnit getInstance() {
		if	(INSTANCE == null) {
			INSTANCE = new MetricMassUnit();
		}
		return INSTANCE;
	}
	
	@Override
	public Set<Unit<?>> getUnits() {
		return units();
	}

	/**
	 * @see #getUnits()
	 */
	public static Set<Unit<?>> units() {
		return new LinkedHashSet<Unit<?>>(sUnits.values());
	}
	
	/**
	 * @see #createAmount(Number, Unit)
	 */
	public static BaseAmount<Mass> amount(Number number, Unit<Mass> unit) {
		return getInstance().createAmount(number, unit);
	}
}