1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2000 William Chesters
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 * William Chesters <williamc@paneris.org>
42 * http://paneris.org/~williamc
43 * Obrechtstraat 114, 2517VX Den Haag, The Netherlands
44 */
45
46 package org.melati.poem;
47
48 /**
49 * An {@link AtomPoemType} with a <code>size</code>.
50 */
51 public abstract class SizedAtomPoemType<T> extends AtomPoemType<T> {
52
53 private int size;
54
55 /**
56 * Constructor with size.
57 * @param sqlTypeCode SQL TYPE code
58 * @param sqlTypeName SQL TYPE name
59 * @param nullable whether nullable
60 * @param size how big
61 */
62 public SizedAtomPoemType(int sqlTypeCode, String sqlTypeName,
63 boolean nullable, int size) {
64 super(sqlTypeCode, sqlTypeName, nullable);
65 this.size = size;
66 }
67
68 /**
69 * @return the size of this type
70 */
71 public int getSize() {
72 return size;
73 }
74
75 /**
76 * @param newSize size of returned field
77 * @return this or clone with new size
78 */
79 @SuppressWarnings("unchecked")
80 public SizedAtomPoemType<T> withSize(int newSize) {
81 if (newSize == getSize())
82 return this;
83
84 SizedAtomPoemType<T> it = (SizedAtomPoemType<T>)clone();
85 it.size = newSize;
86 return it;
87 }
88
89 /**
90 * Compare sizes, taking into account magic value -1.
91 *
92 * @param sizeA the size of first field
93 * @param sizeB the size of second field
94 * @return whether it should be considered bigger
95 */
96 public static boolean sizeGreaterEqual(int sizeA, int sizeB) {
97 return sizeA < 0 || // Text fields have size -1
98 (sizeB >= 0 && sizeA >= sizeB);
99 }
100 }