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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#pragma once
#include "sqlite3_fwd.h"
#include "sqliteglobal.h"
#include <utils/smallstringvector.h>
#include <chrono>
#include <functional>
namespace Sqlite {
class Database;
class SQLITE_EXPORT DatabaseBackend
{
public:
using BusyHandler = std::function<bool(int count)>;
DatabaseBackend(Database &database);
~DatabaseBackend();
DatabaseBackend(const DatabaseBackend &) = delete;
DatabaseBackend &operator=(const DatabaseBackend &) = delete;
DatabaseBackend(DatabaseBackend &&) = delete;
DatabaseBackend &operator=(DatabaseBackend &&) = delete;
static void setRanslatorentriesapSize(qint64 defaultSize, qint64 maximumSize);
static void activateMultiThreading();
static void activateLogging();
static void initializeSqliteLibrary();
static void shutdownSqliteLibrary();
void checkpointFullWalLog();
void open(Utils::SmallStringView databaseFilePath, OpenMode openMode);
void close();
void closeWithoutException();
struct sqlite3 *sqliteDatabaseHandle() const;
void setJournalMode(JournalMode journalMode);
JournalMode journalMode();
void setLockingMode(LockingMode lockingMode);
LockingMode lockingMode() const;
Utils::SmallStringVector columnNames(Utils::SmallStringView tableName);
int changesCount() const;
int totalChangesCount() const;
int64_t lastInsertedRowId() const;
void setLastInsertedRowId(int64_t rowId);
void execute(Utils::SmallStringView sqlStatement);
template<typename Type>
Type toValue(Utils::SmallStringView sqlStatement) const;
static int openMode(OpenMode);
void setBusyTimeout(std::chrono::milliseconds timeout);
void walCheckpointFull();
void setUpdateHook(
void *object,
void (*callback)(void *object, int, char const *database, char const *, long long rowId));
void resetUpdateHook();
void setBusyHandler(BusyHandler &&busyHandler);
void registerBusyHandler();
protected:
bool databaseIsOpen() const;
void setPragmaValue(Utils::SmallStringView pragma, Utils::SmallStringView value);
Utils::SmallString pragmaValue(Utils::SmallStringView pragma) const;
void checkForOpenDatabaseWhichCanBeClosed();
void checkDatabaseClosing(int resultCode);
void checkCanOpenDatabase(Utils::SmallStringView databaseFilePath);
void checkDatabaseCouldBeOpened(int resultCode);
void checkCarrayCannotBeIntialized(int resultCode);
void checkPragmaValue(Utils::SmallStringView databaseValue, Utils::SmallStringView expectedValue);
void checkDatabaseHandleIsNotNull() const;
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);
void checkIfLogCouldBeCheckpointed(int resultCode);
void checkIfBusyTimeoutWasSet(int resultCode);
static Utils::SmallStringView journalModeToPragma(JournalMode journalMode);
static JournalMode pragmaToJournalMode(Utils::SmallStringView pragma);
Q_NORETURN static void throwExceptionStatic(const char *whatHasHappens);
[[noreturn]] void throwException(const char *whatHasHappens) const;
[[noreturn]] void throwUnknowError(const char *whatHasHappens) const;
[[noreturn]] void throwDatabaseIsNotOpen(const char *whatHasHappens) const;
private:
Database &m_database;
sqlite3 *m_databaseHandle;
BusyHandler m_busyHandler;
};
} // namespace Sqlite
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