org.eclipse.osbp.xtext.functionlibrary.common/src/org/eclipse/osbp/xtext/functionlibrary/common/uomo/MetricLengthUnit.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 2.0        
 * which accompanies this distribution, and is available at                  
 * https://www.eclipse.org/legal/epl-2.0/                                 
 *                                 
 * SPDX-License-Identifier: EPL-2.0                                 
 *                                                                            
 * 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.METRE;

import java.util.LinkedHashSet;
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.quantity.LengthAmount;
import org.unitsofmeasurement.quantity.Length;
import org.unitsofmeasurement.unit.Unit;

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

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

//	public final static Unit<Length> MM = SI.addUnit(METRE.divide  (1000.0), "mm").asType(Length.class);
//	public final static Unit<Length> CM = SI.addUnit(METRE.divide  ( 100.0), "cm").asType(Length.class);
//	public final static Unit<Length> M  = SI.addUnit(METRE, "m").asType(Length.class);
//	public final static Unit<Length> KM = SI.addUnit(METRE.multiply(1000.0), "km").asType(Length.class);
	public final static Unit<Length> MM = SI.addUnit(METRE.divide  (1000.0)).asType(Length.class);
	public final static Unit<Length> CM = SI.addUnit(METRE.divide  ( 100.0)).asType(Length.class);
	public final static Unit<Length> M  = SI.addUnit(METRE).asType(Length.class);
	public final static Unit<Length> KM = SI.addUnit(METRE.multiply(1000.0)).asType(Length.class);
//	public final static Unit<Length> MM = SI.addUnit(MILLI(METRE)).asType(Length.class);
//	public final static Unit<Length> CM = SI.addUnit(CENTI(METRE)).asType(Length.class);
//	public final static Unit<Length> M  = SI.addUnit(METRE).asType(Length.class);
//	public final static Unit<Length> KM = SI.addUnit(KILO(METRE)).asType(Length.class);
	
	static {
		addUnits(sUnits, MM, CM, M, KM);
	}
	
	protected final static MetricLengthUnit getInstance() {
		if	(INSTANCE == null) {
			INSTANCE = new MetricLengthUnit();
		}
		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<Length> amount(Number number, Unit<Length> unit) {
		return getInstance().createAmount(number, unit);
	}
}