1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2003 Samuel Goldstein
6 *
7 * Part of Melati (http://melati.org), a framework for the rapid
8 * development of clean, maintainable web applications.
9 *
10 * Melati is free software; Permission is granted to copy, distribute
11 * and/or modify this software under the terms either:
12 *
13 * a) the GNU General Public License as published by the Free Software
14 * Foundation; either version 2 of the License, or (at your option)
15 * any later version,
16 *
17 * or
18 *
19 * b) any version of the Melati Software License, as published
20 * at http://melati.org
21 *
22 * You should have received a copy of the GNU General Public License and
23 * the Melati Software License along with this program;
24 * if not, write to the Free Software Foundation, Inc.,
25 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA to obtain the
26 * GNU General Public License and visit http://melati.org to obtain the
27 * Melati Software License.
28 *
29 * Feel free to contact the Developers of Melati (http://melati.org),
30 * if you would like to work out a different arrangement than the options
31 * outlined here. It is our intention to allow Melati to be used by as
32 * wide an audience as possible.
33 *
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
38 *
39 * Contact details for copyright holder:
40 *
41 * Samuel Goldstein <samuel At 1969.ws>
42 * http://www.1969.ws
43 * 13101 W. Washington Blvd Suite 248, Los Angeles, CA 90066 USA
44 */
45
46 package org.melati.poem;
47
48 import java.math.BigDecimal;
49
50 /**
51 * An extension of {@link AtomPoemType} which adds <code>precision</code>
52 * and <code>scale</code>.
53 */
54 public abstract class FixedPointAtomPoemType<T> extends AtomPoemType<BigDecimal> {
55
56 private int precision;
57 private int scale;
58
59 /**
60 * Constructor.
61 * @param sqlTypeCode from Types
62 * @param sqlTypeName name of sql type
63 * @param nullable whether nulls are allowable values
64 * @param precision how many places to the left of decimal point
65 * @param scale howmany places to right of decimal point
66 */
67 public FixedPointAtomPoemType(int sqlTypeCode, String sqlTypeName, boolean nullable,
68 int precision, int scale) {
69 super(sqlTypeCode, sqlTypeName, nullable);
70 this.precision = precision;
71 this.scale = scale;
72 }
73
74 /**
75 * @return precision plus scale
76 */
77 public int getTotalSize() {
78 return precision + scale;
79 }
80
81 /**
82 *
83 * @param newPrecision required precision
84 * @param newScale required scale
85 * @return this or a clone with new values
86 */
87 public FixedPointAtomPoemType<T> withPrecisionAndScale(
88 int newPrecision,
89 int newScale) {
90 if (newPrecision == getPrecision() && newScale == getScale())
91 return this;
92
93 @SuppressWarnings("unchecked")
94 FixedPointAtomPoemType<T> it = (FixedPointAtomPoemType<T>) clone();
95 it.precision = newPrecision;
96 it.scale = newScale;
97 return it;
98 }
99
100 /**
101 * @return the value of the precision property
102 */
103 public int getPrecision() {
104 return precision;
105 }
106
107 /**
108 * @return the value of the scale property
109 */
110 public int getScale() {
111 return scale;
112 }
113 /**
114 * @param newPrecision precision to set
115 */
116 public void setPrecision(int newPrecision) {
117 precision = newPrecision;
118 }
119
120 /**
121 * @param newScale scale to set
122 */
123 public void setScale(int newScale) {
124 scale = newScale;
125 }
126
127 }