1 package org.djunits.unit;
2
3 import org.djunits.unit.unitsystem.UnitSystem;
4
5 /**
6 * Helper class to create arbitrary SI units.
7 * <p>
8 * Copyright (c) 2015-2018 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
9 * BSD-style license. See <a href="http://djunits.org/docs/license.html">DJUNITS License</a>.
10 * <p>
11 * $LastChangedDate: 2018-01-28 03:17:44 +0100 (Sun, 28 Jan 2018) $, @version $Revision: 256 $, by $Author: averbraeck $,
12 * initial version Jun 15, 2014 <br>
13 * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
14 */
15 public class SIUnit extends Unit<SIUnit>
16 {
17 /** */
18 private static final long serialVersionUID = 20140615L;
19
20 /**
21 * Create an arbitrary SI unit based on a coefficient string, such as m3/cd2.
22 * @param siCoefficientString String; textual description of the unit.
23 */
24 public SIUnit(final String siCoefficientString)
25 {
26 super(siCoefficientString, siCoefficientString, UnitSystem.SI_DERIVED, true);
27 }
28
29 /**
30 * Create an arbitrary SI unit based on a coefficient string, such as m3/cd2.
31 * @param siCoefficientString String; textual description of the unit.
32 * @param standardUnit boolean; if true; the new unit is standard and there should be localization info; if false;
33 * localization will not be available
34 */
35 public SIUnit(final String siCoefficientString, final boolean standardUnit)
36 {
37 super(siCoefficientString, siCoefficientString, UnitSystem.SI_DERIVED, standardUnit);
38 }
39
40 /** {@inheritDoc} */
41 @Override
42 public final SIUnit getStandardUnit()
43 {
44 return this;
45 }
46
47 /** {@inheritDoc} */
48 @Override
49 public final String getSICoefficientsString()
50 {
51 if (null == this.getAbbreviationKey())
52 {
53 return this.getAbbreviation().replace("SIUnit.", ""); // FIXME: this is horrible / PK
54 // We need a better way to determine if a unit is supposed to have localization information.
55 }
56 return this.getAbbreviationKey().replace("SIUnit.", "");
57 }
58
59 }