2 // Copyright 2010 Mikko Keinänen
4 // This file is part of EmuFront.
7 // EmuFront is free software: you can redistribute it and/or modify
8 // it under the terms of the GNU General Public License version 2 as published by
9 // the Free Software Foundation and appearing in the file gpl.txt included in the
10 // packaging of this file.
12 // EmuFront is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with EmuFront. If not, see <http://www.gnu.org/licenses/>.
21 #include <QSqlDatabase>
26 #include "dbcreator.h"
30 const int DbCreator::TABLES_COUNT = 3;
31 const QString DbCreator::TABLES[] = {"platform", "mediatype", "filepath", "mediaimagecontainer", "mediaimage", "mediaimagecontainer_mediaimage"};
33 DbCreator::DbCreator(QObject *parent) : QObject(parent)
38 bool DbCreator::createDB()
45 query.exec("DROP TABLE IF EXISTS mediaimagecontainer_file");
46 query.exec("DROP TABLE IF EXISTS mediaimagecontainer");
47 query.exec("DROP TABLE IF EXISTS filepath");
48 query.exec("DROP TABLE IF EXISTS setup");
49 query.exec("DROP TABLE IF EXISTS mediatype");
50 query.exec("DROP TABLE IF EXISTS platform");
51 query.exec("DROP TABLE IF EXISTS file");
52 query.exec("DROP TABLE IF EXISTS executable");
54 qDebug() << "Creating TABLE file";
56 ret = query.exec("CREATE TABLE IF NOT EXISTS file"
57 "(id INTEGER PRIMARY KEY, "
62 "updatetime NUMERIC)");
64 if (!ret) throw QString("tbl file");
66 qDebug() << "Creating TABLE platform";
68 ret = query.exec("CREATE TABLE IF NOT EXISTS platform "
69 "(id INTEGER PRIMARY KEY, "
71 "fileid INTEGER REFERENCES file(id))");
73 if (!ret) throw QString("tbl platform");
75 qDebug() << "Creating TABLE mediatype ";
77 ret = query.exec("CREATE TABLE IF NOT EXISTS mediatype "
78 "(id INTEGER PRIMARY KEY, "
80 "fileid INTEGER REFERENCES file(id))");
82 if (!ret) throw QString("tbl mediatype");
84 qDebug() << "Creating TABLE setup";
86 ret = query.exec("CREATE TABLE IF NOT EXISTS setup "
87 "(id INTEGER PRIMARY KEY, "
88 "platformid INTEGER REFERENCES platform(id) ON DELETE CASCADE, "
89 "mediatypeid INTEGER REFERENCES mediatype(id) ON DELETE CASCADE, "
90 "filetypeextensions TEXT)");
92 if (!ret) throw QString("tbl setup");
94 qDebug() << "Creating table executable";
96 ret = query.exec("CREATE TABLE IF NOT EXISTS executable "
97 "(id INTEGER PRIMARY KEY, "
102 "setupid INTEGER REFERENCES setup(id))");
104 if (!ret) throw QString("tbl executable");
106 qDebug() << "Creating TABLE filepath";
108 ret = query.exec("CREATE TABLE IF NOT EXISTS filepath "
109 "(id INTEGER PRIMARY KEY, "
111 "filetypeid INTEGER, "
113 "lastscanned NUMERIC, "
114 "FOREIGN KEY (setupid) REFERENCES setup(id))");
116 if (!ret) throw QString("tbl filepath");
118 qDebug() << "Creating TABLE mediaimagecontainer";
120 ret = query.exec("CREATE TABLE IF NOT EXISTS mediaimagecontainer "
121 "(fileid INTEGER REFERENCES file(id), "
122 "filepathid INTEGER REFERENCES filepath(id), "
123 "updatetime NUMERIC)");
125 if (!ret) throw QString("tbl mediaimagecontainer");
128 qDebug() << "Creating TABLE mediaimagecontainer_mediaimage";
130 ret = query.exec("CREATE TABLE IF NOT EXISTS mediaimagecontainer_mediaimage "
131 "(mediaimagecontainerid INTEGER REFERENCES file(id), "
132 "mediaimageid INTEGER REFERENCES file(id))");
134 if (!ret) throw QString("tbl mediaimagecontainer_mediaimage");
137 "CREATE TRIGGER IF NOT EXISTS trg_onplatformdelete "
138 "AFTER DELETE ON platform "
140 " DELETE FROM setup WHERE setup.platformid = old.id;"
144 if (!ret) throw QString("trg_onplatformdelete");
147 "CREATE TRIGGER IF NOT EXISTS trg_onmediatypedelete "
148 "AFTER DELETE ON mediatype "
150 " DELETE FROM setup WHERE setup.mediatypeid = old.id;"
154 if (!ret) throw QString("trg_onmediatypedelete");
157 "CREATE TRIGGER IF NOT EXISTS trg_onsetupdelete "
158 "AFTER DELETE ON setup "
160 " DELETE FROM filepath WHERE filepath.setupid = old.id; "
161 " DELETE FROM executable WHERE executable.setupid = old.id; "
165 if (!ret) throw QString("trg_onsetupdelete");
168 "CREATE TRIGGER IF NOT EXISTS trg_onfilepathdelete "
169 "AFTER DELETE ON filepath "
171 " DELETE FROM mediaimagecontainer WHERE mediaimagecontainer.filepathid=old.id; "
175 if (!ret) throw QString("trg_onfilepathdelete");
178 "CREATE TRIGGER IF NOT EXISTS trg_onmediaimagecontainerdelete "
179 "AFTER DELETE ON mediaimagecontainer "
181 " DELETE FROM mediaimagecontainer_mediaimage WHERE mediaimagecontainer_mediaimage.mediaimagecontainerid=old.fileid;"
185 if (!ret) throw QString("trg_onmediaimagecontainerdelete");
188 "CREATE TRIGGER IF NOT EXISTS trg_onmediaimagecontainer_mediaimagedelete "
189 "AFTER DELETE ON mediaimagecontainer_mediaimage "
191 " DELETE FROM file WHERE file.id=old.mediaimageid; "
192 " DELETE FROM file WHERE file.id=old.mediaimagecontainerid; "
195 if (!ret) throw QString("trg_onmediaimagecontainer_mediaimagedelete");
200 QString err = query.lastError().text();
201 throw QString("Couldn't CREATE '%1'!").arg(tbl).append(err);
207 * Check if database already exists.
208 * Returns false if doesn't or we don't have a connection.
210 bool DbCreator::dbExists()
212 for (int i = 0; i < TABLES_COUNT; ++i)
214 if (!tableExists(TABLES[i]))
216 qDebug() << "Table " << TABLES[i] << " missing.";
219 qDebug() << "Table " << TABLES[i] << " exists.";
224 bool DbCreator::tableExists(QString TABLE)
227 query.exec(QString("SELECT name FROM sqlite_master WHERE name='%1'").arg(TABLE));
231 bool DbCreator::deleteDB()
233 // return QFile::remove(getDbPath());