1 /*
2 * $Source$
3 * $Revision$
4 *
5 * Copyright (C) 2002 Tim Pizey
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 * Tim Pizey (timp At paneris.org)
42 *
43 */
44
45
46 package org.melati.poem.dbms;
47
48 import org.melati.poem.PoemType;
49 import org.melati.poem.StringPoemType;
50 import org.melati.poem.BooleanPoemType;
51 import org.melati.poem.IntegerPoemType;
52
53 /**
54 * A Driver for Mimer ( NOT WORKING YET!!!).
55 */
56 public class Mimer extends AnsiStandard {
57
58 /** Size of text fields. */
59 public static final int mimerTextHack = 2500;
60
61 /**
62 * Constructor - set driver.
63 */
64 public Mimer() {
65 setDriverClassName("com.mimer.jdbc.Driver");
66 }
67
68 /**
69 * {@inheritDoc}
70 * @see org.melati.poem.dbms.AnsiStandard#getStringSqlDefinition(int)
71 */
72 public String getStringSqlDefinition(int size) {
73 if (size < 0) return "VARCHAR(" + mimerTextHack + ")";
74 return "VARCHAR(" + size + ")";
75 }
76
77 /**
78 * {@inheritDoc}
79 * @see org.melati.poem.dbms.AnsiStandard#canRepresent
80 */
81 public <S,O>PoemType<O> canRepresent(PoemType<S> storage, PoemType<O> type) {
82 if (storage instanceof StringPoemType &&
83 type instanceof StringPoemType) {
84
85 if (((StringPoemType)storage).getSize() == mimerTextHack &&
86 ((StringPoemType)type).getSize() == -1
87 && !(!storage.getNullable() && type.getNullable()) // Nullable may represent not nullable
88 ) {
89 return type;
90 } else {
91 return storage.canRepresent(type);
92 }
93 } else if (storage instanceof IntegerPoemType &&
94 type instanceof BooleanPoemType
95 && !(!storage.getNullable() && type.getNullable()) // Nullable may represent not nullable
96 ) {
97 return type;
98 } else {
99 return storage.canRepresent(type);
100 }
101 }
102
103
104
105 /**
106 * {@inheritDoc}
107 * @see org.melati.poem.dbms.AnsiStandard#getSqlDefinition(java.lang.String)
108 */
109 public String getSqlDefinition(String sqlTypeName) {
110 if (sqlTypeName.equals("BOOLEAN")) {
111 return ("INT");
112 }
113 return super.getSqlDefinition(sqlTypeName);
114 }
115
116 }
117
118
119