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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#ifndef SQLITEDATABASEBACKEND_H
#define SQLITEDATABASEBACKEND_H
#include "sqliteglobal.h"
#include "utf8stringvector.h"
#include <QStringList>
struct sqlite3;
class SQLITE_EXPORT SqliteDatabaseBackend
{
public:
SqliteDatabaseBackend();
~SqliteDatabaseBackend();
static void setMmapSize(qint64 defaultSize, qint64 maximumSize);
static void activateMultiThreading();
static void activateLogging();
static void initializeSqliteLibrary();
static void shutdownSqliteLibrary();
static void checkpointFullWalLog();
void open(const QString &databaseFilePath);
void close();
void closeWithoutException();
static SqliteDatabaseBackend *threadLocalInstance();
static sqlite3* sqliteDatabaseHandle();
void setJournalMode(JournalMode journalMode);
JournalMode journalMode() const;
void setTextEncoding(TextEncoding textEncoding);
TextEncoding textEncoding();
static Utf8StringVector columnNames(const Utf8String &tableName);
static int changesCount();
static int totalChangesCount();
protected:
bool databaseIsOpen() const;
void setPragmaValue(const Utf8String &pragma, const Utf8String &value);
Utf8String pragmaValue(const Utf8String &pragma) const;
void registerBusyHandler();
void registerRankingFunction();
static int busyHandlerCallback(void*, int counter);
void cacheTextEncoding();
void checkForOpenDatabaseWhichCanBeClosed();
void checkDatabaseClosing(int resultCode);
void checkCanOpenDatabase(const QString &databaseFilePath);
void checkDatabaseCouldBeOpened(int resultCode);
void checkPragmaValue(const Utf8String &databaseValue, const Utf8String &expectedValue);
static void checkDatabaseHandleIsNotNull();
static void checkDatabaseBackendIsNotNull();
static void checkIfMultithreadingIsActivated(int resultCode);
static void checkIfLoogingIsActivated(int resultCode);
static void checkMmapSizeIsSet(int resultCode);
static void checkInitializeSqliteLibraryWasSuccesful(int resultCode);
static void checkShutdownSqliteLibraryWasSuccesful(int resultCode);
static void checkIfLogCouldBeCheckpointed(int resultCode);
static int indexOfPragma(const Utf8String pragma, const Utf8String pragmas[], size_t pragmaCount);
static const Utf8String &journalModeToPragma(JournalMode journalMode);
static JournalMode pragmaToJournalMode(const Utf8String &pragma);
static const Utf8String &textEncodingToPragma(TextEncoding textEncoding);
static TextEncoding pragmaToTextEncoding(const Utf8String &pragma);
Q_NORETURN static void throwException(const char *whatHasHappens);
private:
sqlite3 *databaseHandle;
TextEncoding cachedTextEncoding;
};
#endif // SQLITEDATABASEBACKEND_H
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