Added new data class Setup to contain the setup information (platform,
[emufront] / src / db / databasemanager.cpp
1 // EmuFront
2 // Copyright 2010 Mikko Keinänen
3 //
4 // This file is part of EmuFront.
5 //
6 //
7 // EmuFront is free software: you can redistribute it and/or modify
8 // it under the terms of the GNU General Public License as published by
9 // the Free Software Foundation, either version 3 of the License, or
10 // (at your option) any later version.
11 //
12 // Foobar 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.
16 //
17 // You should have received a copy of the GNU General Public License
18 // along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
19
20 #include "databasemanager.h"
21 #include <QObject>
22 #include <QSqlDatabase>
23 #include <QSqlTableModel>
24 #include <QSqlError>
25 #include <QSqlQuery>
26 #include <QSqlRecord>
27 #include <QFile>
28 #include <QDir>
29 #include <QVariant>
30
31 const QString DatabaseManager::DB_FILENAME = QString("my.db.sqlite");
32 const QString DatabaseManager::DATABASE = QString("QSQLITE");
33 const QString DatabaseManager::DB_TABLE_NAME_MEDIATYPE = QString("mediatype");
34 const QString DatabaseManager::DB_TABLE_NAME_PLATFORM = QString("platform");
35 const QString DatabaseManager::DB_TABLE_NAME_FILEPATH = QString("filepath");
36 const QString DatabaseManager::DB_TABLE_NAME_SETUP = QString("setup");
37
38 DatabaseManager::DatabaseManager(QObject *parent)
39         : QObject(parent)
40 {}
41
42 DatabaseManager::~DatabaseManager()
43 {
44     // no need to explicitily destroy sqlTableModel
45     // because it is parented QObject and will
46     // be destroyed when parent is destroyed
47 }
48
49 QSqlQueryModel* DatabaseManager::getDataModel()
50 {
51     return sqlTableModel;
52 }
53
54 bool DatabaseManager::openDB()
55 {
56     QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");
57     db.setDatabaseName(DatabaseManager::getDbPath());
58     return db.open();
59 }
60
61 QString DatabaseManager::getDbPath()
62 {
63         QString path;
64 #ifdef Q_OS_LINUX
65         path.append(QDir::home().path());
66         path.append(QDir::separator()).append(DB_FILENAME);
67 #else
68         path.append(DB_FILENAME);       
69 #endif
70         return path;
71 }
72
73 void DatabaseManager::resetModel()
74 {
75     if (!sqlTableModel) return;
76     clearFilters();
77 }
78
79 // sql must return a count(*) value
80 int DatabaseManager::countRows(QString tableName, QString columnName, int id) const
81 {
82     QString sql = QString("SELECT COUNT(*) FROM %1 WHERE %2 = %3")
83         .arg(tableName).arg(columnName).arg(id);
84     int numEntries = 0;
85     QSqlQuery query(sql);
86     if (query.next())
87         numEntries = query.value(0).toInt();
88     return numEntries;
89 }
90
91 EmuFrontObject* DatabaseManager::getDataObject(int id)
92 {
93     filterById(id);
94     EmuFrontObject *plf = 0;
95     if (sqlTableModel->rowCount() == 1)
96     {
97         QSqlRecord record = sqlTableModel->record(0);
98         plf = recordToDataObject(&record);
99     }
100     return plf;
101 }
102
103 EmuFrontObject* DatabaseManager::getDataObjectFromModel(QModelIndex *index)
104 {
105     QSqlRecord record = sqlTableModel->record(index->row());
106     return recordToDataObject(&record);
107 }