src/file/migrator.cpp

0001 /*
0002     SPDX-FileCopyrightText: 2015 Vishesh Handa <vhanda@kde.org>
0003
0004     SPDX-License-Identifier: LGPL-2.1-or-later
0005 */
0006
0007 #include "migrator.h"
0008 #include "fileindexerconfig.h"
0009
0010 #include <QFile>
0011 #include <QDir>
0012
0013 using namespace Baloo;
0014
0015 Migrator::Migrator(const QString& dbPath, FileIndexerConfig* config)
0016     : m_dbPath(dbPath)
0017     , m_config(config)
0018 {
0019     Q_ASSERT(!dbPath.isEmpty());
0020     Q_ASSERT(!dbPath.endsWith(QLatin1Char('/')));
0021     Q_ASSERT(config);
0022 }
0023
0024 /*
0025  * Changing this version number indicates that the old index should be deleted
0026  * and the indexing should be started from scratch.
0027  */
0028 static int s_dbVersion = 2;
0029
0030 bool Migrator::migrationRequired() const
0031 {
0032     return m_config->databaseVersion() != s_dbVersion;
0033 }
0034
0035 void Migrator::migrate()
0036 {
0037     Q_ASSERT(migrationRequired());
0038
0039     int dbVersion = m_config->databaseVersion();
0040     if (dbVersion == 0 && QFile::exists(m_dbPath + QStringLiteral("/file"))) {
0041         QDir dir(m_dbPath + QStringLiteral("/file"));
0042         dir.removeRecursively();
0043     }
0044     else if (QFile::exists(m_dbPath + QStringLiteral("/index"))) {
0045         QFile::remove(m_dbPath + QStringLiteral("/index"));
0046         QFile::remove(m_dbPath + QStringLiteral("/index-lock"));
0047     }
0048
0049     m_config->setDatabaseVersion(s_dbVersion);
0050 }