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, "
58 "name TEXT, " // TODO: optional here! -> mediaimagecontainer has filepath spesific name and media image has mediaimagecontainer specific name
59 // so no name here for those file types
63 "updatetime NUMERIC)");
65 if (!ret) throw QString("tbl file");
67 qDebug() << "Creating TABLE platform";
69 ret = query.exec("CREATE TABLE IF NOT EXISTS platform "
70 "(id INTEGER PRIMARY KEY, "
72 "fileid INTEGER REFERENCES file(id))");
74 if (!ret) throw QString("tbl platform");
76 qDebug() << "Creating TABLE mediatype ";
78 ret = query.exec("CREATE TABLE IF NOT EXISTS mediatype "
79 "(id INTEGER PRIMARY KEY, "
81 "fileid INTEGER REFERENCES file(id))");
83 if (!ret) throw QString("tbl mediatype");
85 qDebug() << "Creating TABLE setup";
87 ret = query.exec("CREATE TABLE IF NOT EXISTS setup "
88 "(id INTEGER PRIMARY KEY, "
89 "platformid INTEGER REFERENCES platform(id) ON DELETE CASCADE, "
90 "mediatypeid INTEGER REFERENCES mediatype(id) ON DELETE CASCADE, "
91 "filetypeextensions TEXT)");
93 if (!ret) throw QString("tbl setup");
95 qDebug() << "Creating table executable";
97 ret = query.exec("CREATE TABLE IF NOT EXISTS executable "
98 "(id INTEGER PRIMARY KEY, "
103 "setupid INTEGER REFERENCES setup(id))");
105 if (!ret) throw QString("tbl executable");
107 qDebug() << "Creating TABLE filepath";
109 ret = query.exec("CREATE TABLE IF NOT EXISTS filepath "
110 "(id INTEGER PRIMARY KEY, "
112 "filetypeid INTEGER, "
114 "lastscanned NUMERIC, "
115 "FOREIGN KEY (setupid) REFERENCES setup(id))");
117 if (!ret) throw QString("tbl filepath");
119 qDebug() << "Creating TABLE mediaimagecontainer";
121 ret = query.exec("CREATE TABLE IF NOT EXISTS mediaimagecontainer_filepath "
122 "(fileid INTEGER REFERENCES file(id), "
123 "filepathid INTEGER REFERENCES filepath(id), "
124 "mediaimagecontainername TEXT, " // filepath specific name for media image container
125 "updatetime NUMERIC)");
127 if (!ret) throw QString("tbl mediaimagecontainer");
130 qDebug() << "Creating TABLE mediaimagecontainer_mediaimage";
132 ret = query.exec("CREATE TABLE IF NOT EXISTS mediaimagecontainer_mediaimage "
133 "(mediaimagecontainerid INTEGER REFERENCES file(id), "
134 "mediaimageid INTEGER REFERENCES file(id), "
135 "mediaimagename TEXT " // mediaimagecontainer specific name for media image
138 if (!ret) throw QString("tbl mediaimagecontainer_mediaimage");
141 "CREATE TRIGGER IF NOT EXISTS trg_onplatformdelete "
142 "AFTER DELETE ON platform "
144 " DELETE FROM setup WHERE setup.platformid = old.id;"
148 if (!ret) throw QString("trg_onplatformdelete");
151 "CREATE TRIGGER IF NOT EXISTS trg_onmediatypedelete "
152 "AFTER DELETE ON mediatype "
154 " DELETE FROM setup WHERE setup.mediatypeid = old.id;"
158 if (!ret) throw QString("trg_onmediatypedelete");
161 "CREATE TRIGGER IF NOT EXISTS trg_onsetupdelete "
162 "AFTER DELETE ON setup "
164 " DELETE FROM filepath WHERE filepath.setupid = old.id; "
165 " DELETE FROM executable WHERE executable.setupid = old.id; "
169 if (!ret) throw QString("trg_onsetupdelete");
172 "CREATE TRIGGER IF NOT EXISTS trg_onfilepathdelete "
173 "AFTER DELETE ON filepath "
175 " DELETE FROM mediaimagecontainer WHERE mediaimagecontainer.filepathid=old.id; "
179 if (!ret) throw QString("trg_onfilepathdelete");
182 "CREATE TRIGGER IF NOT EXISTS trg_onmediaimagecontainerdelete "
183 "AFTER DELETE ON mediaimagecontainer "
185 " DELETE FROM mediaimagecontainer_mediaimage WHERE mediaimagecontainer_mediaimage.mediaimagecontainerid=old.fileid;"
189 if (!ret) throw QString("trg_onmediaimagecontainerdelete");
192 "CREATE TRIGGER IF NOT EXISTS trg_onmediaimagecontainer_mediaimagedelete "
193 "AFTER DELETE ON mediaimagecontainer_mediaimage "
195 " DELETE FROM file WHERE file.id=old.mediaimageid; "
196 " DELETE FROM file WHERE file.id=old.mediaimagecontainerid; "
199 if (!ret) throw QString("trg_onmediaimagecontainer_mediaimagedelete");
204 QString err = query.lastError().text();
205 throw QString("Couldn't CREATE '%1'!").arg(tbl).append(err);
211 * Check if database already exists.
212 * Returns false if doesn't or we don't have a connection.
214 bool DbCreator::dbExists()
216 for (int i = 0; i < TABLES_COUNT; ++i)
218 if (!tableExists(TABLES[i]))
220 qDebug() << "Table " << TABLES[i] << " missing.";
223 qDebug() << "Table " << TABLES[i] << " exists.";
228 bool DbCreator::tableExists(QString TABLE)
231 query.exec(QString("SELECT name FROM sqlite_master WHERE name='%1'").arg(TABLE));
235 bool DbCreator::deleteDB()
237 // return QFile::remove(getDbPath());