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/****************************************************************************
**
** Copyright (C) 2017 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.
**
****************************************************************************/
#pragma once
#include "filepathexceptions.h"
#include "filepathid.h"
#include "filepathstoragesources.h"
#include <sqliteexception.h>
#include <sqlitetransaction.h>
#include <utils/optional.h>
namespace ClangBackEnd {
template <typename StatementFactory>
class FilePathStorage
{
using ReadStatement = typename StatementFactory::ReadStatement;
using WriteStatement = typename StatementFactory::WriteStatement;
using Database = typename StatementFactory::Database;
public:
FilePathStorage(StatementFactory &statementFactory)
: m_statementFactory(statementFactory)
{}
int fetchDirectoryId(Utils::SmallStringView directoryPath)
{
try {
Sqlite::DeferredTransaction transaction{m_statementFactory.database};
Utils::optional<int> optionalDirectoryId = readDirectoryId(directoryPath);
int directoryId = -1;
if (optionalDirectoryId)
directoryId = optionalDirectoryId.value();
else
directoryId = writeDirectoryId(directoryPath);
transaction.commit();
return directoryId;
} catch (const Sqlite::StatementIsBusy &) {
return fetchDirectoryId(directoryPath);
} catch (const Sqlite::ConstraintPreventsModification &) {
return fetchDirectoryId(directoryPath);
}
}
Utils::optional<int> readDirectoryId(Utils::SmallStringView directoryPath)
{
ReadStatement &statement = m_statementFactory.selectDirectoryIdFromDirectoriesByDirectoryPath;
return statement.template value<int>(directoryPath);
}
int writeDirectoryId(Utils::SmallStringView directoryPath)
{
WriteStatement &statement = m_statementFactory.insertIntoDirectories;
statement.write(directoryPath);
return int(m_statementFactory.database.lastInsertedRowId());
}
Utils::PathString fetchDirectoryPath(int directoryPathId)
{
try {
Sqlite::DeferredTransaction transaction{m_statementFactory.database};
ReadStatement &statement = m_statementFactory.selectDirectoryPathFromDirectoriesByDirectoryId;
auto optionalDirectoryPath = statement.template value<Utils::PathString>(directoryPathId);
if (!optionalDirectoryPath)
throw DirectoryPathIdDoesNotExists();
transaction.commit();
return optionalDirectoryPath.value();
} catch (const Sqlite::StatementIsBusy &) {
return fetchDirectoryPath(directoryPathId);
}
}
std::vector<Sources::Directory> fetchAllDirectories()
{
try {
Sqlite::DeferredTransaction transaction{m_statementFactory.database};
ReadStatement &statement = m_statementFactory.selectAllDirectories;
auto directories = statement.template values<Sources::Directory, 2>(256);
transaction.commit();
return directories;
} catch (const Sqlite::StatementIsBusy &) {
return fetchAllDirectories();
}
}
int fetchSourceId(int directoryId, Utils::SmallStringView sourceName)
{
try {
Sqlite::DeferredTransaction transaction{m_statementFactory.database};
Utils::optional<int> optionalSourceId = readSourceId(directoryId, sourceName);
int sourceId = -1;
if (optionalSourceId)
sourceId = optionalSourceId.value();
else
sourceId = writeSourceId(directoryId, sourceName);
transaction.commit();
return sourceId;
} catch (const Sqlite::StatementIsBusy &) {
return fetchSourceId(directoryId, sourceName);
} catch (const Sqlite::ConstraintPreventsModification &) {
return fetchSourceId(directoryId, sourceName);
}
}
int writeSourceId(int directoryId, Utils::SmallStringView sourceName)
{
WriteStatement &statement = m_statementFactory.insertIntoSources;
statement.write(directoryId, sourceName);
return int(m_statementFactory.database.lastInsertedRowId());
}
Utils::optional<int> readSourceId(int directoryId, Utils::SmallStringView sourceName)
{
ReadStatement &statement = m_statementFactory.selectSourceIdFromSourcesByDirectoryIdAndSourceName;
return statement.template value<int>(directoryId, sourceName);
}
Sources::SourceNameAndDirectoryId fetchSourceNameAndDirectoryId(int sourceId)
{
try {
Sqlite::DeferredTransaction transaction{m_statementFactory.database};
ReadStatement &statement = m_statementFactory.selectSourceNameAndDirectoryIdFromSourcesBySourceId;
auto optionalSourceName = statement.template value<Sources::SourceNameAndDirectoryId, 2>(sourceId);
if (!optionalSourceName)
throw SourceNameIdDoesNotExists();
transaction.commit();
return optionalSourceName.value();
} catch (const Sqlite::StatementIsBusy &) {
return fetchSourceNameAndDirectoryId(sourceId);
}
}
std::vector<Sources::Source> fetchAllSources()
{
try {
Sqlite::DeferredTransaction transaction{m_statementFactory.database};
ReadStatement &statement = m_statementFactory.selectAllSources;
auto sources = statement.template values<Sources::Source, 2>(8192);
transaction.commit();
return sources;
} catch (const Sqlite::StatementIsBusy &) {
return fetchAllSources();
}
}
private:
StatementFactory &m_statementFactory;
};
} // namespace ClangBackEnd
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