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86 lines
3 KiB
C++
86 lines
3 KiB
C++
/*
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Copyright (c) 2009 Volker Krause <vkrause@kde.org>
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This library is free software; you can redistribute it and/or modify it
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under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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This library is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA.
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*/
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#include "dbaccess.h"
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#include <akonadi/servermanager.h>
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#include <akonadi/private/xdgbasedirs_p.h>
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#include <QSettings>
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#include <QSqlDatabase>
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#include <QSqlQuery>
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#include <QSqlError>
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#include <KLocalizedString>
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#include <KMessageBox>
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using namespace Akonadi;
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class DbAccessPrivate
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{
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public:
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DbAccessPrivate()
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{
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init();
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}
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void init()
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{
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const QString serverConfigFile = saveDir( "config" ) + QLatin1String("/akonadiserverrc");
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QSettings settings( serverConfigFile, QSettings::IniFormat );
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const QString driver = settings.value( "General/Driver", "QMYSQL" ).toString();
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database = QSqlDatabase::addDatabase( driver );
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settings.beginGroup( driver );
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database.setHostName( settings.value( "Host", QString() ).toString() );
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database.setDatabaseName( settings.value( "Name", "akonadi" ).toString() );
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database.setUserName( settings.value( "User", QString() ).toString() );
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database.setPassword( settings.value( "Password", QString() ).toString() );
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database.setConnectOptions( settings.value( "Options", QString() ).toString() );
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if ( !database.open() ) {
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KMessageBox::error( 0, i18n( "Failed to connect to database: %1", database.lastError().text() ) );
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}
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}
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QString saveDir(const char* resource, const QString& relPath = QString() )
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{
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QString fullRelPath = QLatin1String("akonadi");
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if ( ServerManager::hasInstanceIdentifier() )
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fullRelPath += QLatin1String("/instance/") + ServerManager::instanceIdentifier();
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if ( !relPath.isEmpty() )
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fullRelPath += QLatin1Char('/') + relPath;
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return XdgBaseDirs::saveDir( resource, fullRelPath );
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}
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QSqlDatabase database;
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};
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K_GLOBAL_STATIC( DbAccessPrivate, sInstance )
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QSqlDatabase DbAccess::database()
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{
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// hack to detect database gone away error
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QSqlQuery query( sInstance->database );
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// prepare or exec of "SELECT 1" will only fail when we are not connected to database
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if ( !query.prepare( QLatin1String( "SELECT 1" ) ) || !query.exec() ) {
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sInstance->database.close();
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QSqlDatabase::removeDatabase(sInstance->database.connectionName());
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sInstance->init();
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}
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return sInstance->database;
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}
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