1 package org.djunits.value;
2
3 import java.io.Serializable;
4
5 import org.djunits.unit.Unit;
6
7 /**
8 * AbstractValue is a class to help construct Matrix, Complex, and Vector but it does not extend java.lang.Number. The Scalar
9 * class <i>does</i> extend Number, and implements the same interfaces from Value.
10 * <p>
11 * This file was generated by the djunits value classes generator, 26 jun, 2015
12 * <p>
13 * Copyright (c) 2015-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
14 * BSD-style license. See <a href="http://djunits.org/docs/license.html">DJUNITS License</a>.
15 * <p>
16 * $LastChangedDate: 2019-01-18 00:35:01 +0100 (Fri, 18 Jan 2019) $, @version $Revision: 324 $, by $Author: averbraeck $,
17 * initial version 26 jun, 2015 <br>
18 * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
19 * @author <a href="http://www.tudelft.nl/pknoppers">Peter Knoppers</a>
20 * @param <U> the Unit of the value(s) in this AbstractValue. Used for setting, getting and displaying the value(s)
21 */
22 public abstract class AbstractValue<U extends Unit<U>> implements Value<U>, Serializable
23 {
24 /** */
25 private static final long serialVersionUID = 20150626L;
26
27 /** The display unit of this AbstractValue. */
28 private U unit;
29
30 /**
31 * Construct a new AbstractValue.
32 * @param unit U; the unit of the new AbstractValue
33 */
34 protected AbstractValue(final U unit)
35 {
36 this.unit = unit;
37 }
38
39 /** {@inheritDoc} */
40 @Override
41 public final U getUnit()
42 {
43 return this.unit;
44 }
45
46 /** {@inheritDoc} */
47 @Override
48 public final double expressAsSIUnit(final double value)
49 {
50 return ValueUtil.expressAsSIUnit(value, this.unit);
51 }
52
53 /**
54 * Convert a value in SI standard unit into the unit of this AbstractValue.
55 * @param value double; the value in the standard SI unit
56 * @return double; the value in the unit as specified for this AbstractValue
57 */
58 protected final double expressAsSpecifiedUnit(final double value)
59 {
60 return ValueUtil.expressAsUnit(value, this.unit);
61 }
62
63 /** {@inheritDoc} */
64 @Override
65 public void setDisplayUnit(final U newUnit)
66 {
67 this.unit = newUnit;
68 }
69
70 /** {@inheritDoc} */
71 @Override
72 public final boolean isAbsolute()
73 {
74 return this instanceof Absolute;
75 }
76
77 /** {@inheritDoc} */
78 @Override
79 public final boolean isRelative()
80 {
81 return this instanceof Relative;
82 }
83
84 // No hashcode or equals -- has to be implemented on a deeper level
85
86 }