org.eclipse.osbp.xtext.functionlibrary.common/src/org/eclipse/osbp/xtext/functionlibrary/common/uomo/ImperialLengthUnit.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 java.util.LinkedHashSet;
import java.util.Locale;
import java.util.Set;
import java.util.TreeMap;

import org.eclipse.uomo.units.impl.BaseAmount;
import org.eclipse.uomo.units.impl.format.LocalUnitFormatImpl;
import org.eclipse.uomo.units.impl.quantity.LengthAmount;
import org.eclipse.uomo.units.impl.system.USCustomary;
import org.unitsofmeasurement.quantity.Length;
import org.unitsofmeasurement.unit.Unit;

/**
 * System of metric length units
 * @see https://en.wikipedia.org/wiki/Imperial_units
 */
public class ImperialLengthUnit extends ASystemOfQuantityUnits<USCustomary,Length> implements ISystemOfQuantityUnits<USCustomary,Length> {

	protected ImperialLengthUnit() {
		super("Imperial Length Units", USCustomary.class, Length.class, LengthAmount.class);
	}

	protected final static TreeMap<Double,Unit<?>> sUnits = new TreeMap<Double,Unit<?>> ();
	
	private static LocalUnitFormatImpl formatUS = LocalUnitFormatImpl.getInstance(Locale.US);
	public final static Unit<Length> IN = USCustomary.addUnit(USCustomary.INCH, formatUS.format(USCustomary.INCH)).asType(Length.class);
//	public final static Unit<Length> FT = USCustomary.addUnit(USCustomary.FOOT, "ft").asType(Length.class);
	public final static Unit<Length> FT = USCustomary.addUnit(USCustomary.FOOT, formatUS.format(USCustomary.FOOT)).asType(Length.class);
	public final static Unit<Length> YD = USCustomary.addUnit(USCustomary.FOOT.multiply(3.0), "yd").asType(Length.class);
	public final static Unit<Length> MI = USCustomary.addUnit(USCustomary.MILE, formatUS.format(USCustomary.MILE)).asType(Length.class);
//	public final static Unit<Length> IN = USCustomary.addUnit(USCustomary.INCH.multiply(1.0), "in").asType(Length.class);
//	public final static Unit<Length> FT = USCustomary.addUnit(USCustomary.FOOT.multiply(1.0), "ft").asType(Length.class);
//	public final static Unit<Length> YD = USCustomary.addUnit(FT.multiply(3.0), "yd").asType(Length.class);
//	public final static Unit<Length> MI = USCustomary.addUnit(USCustomary.MILE.multiply(1.0), "mi").asType(Length.class);

	static {
		addUnits(sUnits, IN, FT, YD, MI);
	}
	
	private static ImperialLengthUnit INSTANCE;
	
	protected final static ImperialLengthUnit getInstance() {
		if	(INSTANCE == null) {
			INSTANCE = new ImperialLengthUnit();
		}
		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);
	}
}