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//
// SessionImpl.cpp
//
// $Id: //poco/Main/Data/SQLite/src/SessionImpl.cpp#5 $
//
// Library: SQLite
// Package: SQLite
// Module: SessionImpl
//
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#include "Poco/Data/SQLite/SessionImpl.h"
#include "Poco/Data/SQLite/Utility.h"
#include "Poco/Data/SQLite/SQLiteStatementImpl.h"
#include "Poco/Data/SQLite/SQLiteException.h"
#include "Poco/Data/Session.h"
#include "Poco/ActiveMethod.h"
#include "Poco/ActiveResult.h"
#include "Poco/String.h"
#include "Poco/Mutex.h"
#include "Poco/Data/DataException.h"
#if defined(POCO_UNBUNDLED)
#include <sqlite3.h>
#else
#include "sqlite3.h"
#endif
#include <cstdlib>
#ifndef SQLITE_OPEN_URI
#define SQLITE_OPEN_URI 0
#endif
namespace Poco {
namespace Data {
namespace SQLite {
const std::string SessionImpl::DEFERRED_BEGIN_TRANSACTION("BEGIN DEFERRED");
const std::string SessionImpl::COMMIT_TRANSACTION("COMMIT");
const std::string SessionImpl::ABORT_TRANSACTION("ROLLBACK");
SessionImpl::SessionImpl(const std::string& fileName, std::size_t loginTimeout):
Poco::Data::AbstractSessionImpl<SessionImpl>(fileName, loginTimeout),
_connector(Connector::KEY),
_pDB(0),
_connected(false),
_isTransaction(false)
{
open();
setConnectionTimeout(CONNECTION_TIMEOUT_DEFAULT);
setProperty("handle", _pDB);
addFeature("autoCommit",
&SessionImpl::autoCommit,
&SessionImpl::isAutoCommit);
addProperty("connectionTimeout", &SessionImpl::setConnectionTimeout, &SessionImpl::getConnectionTimeout);
}
SessionImpl::~SessionImpl()
{
try
{
close();
}
catch (...)
{
poco_unexpected();
}
}
Poco::Data::StatementImpl* SessionImpl::createStatementImpl()
{
poco_check_ptr (_pDB);
return new SQLiteStatementImpl(*this, _pDB);
}
void SessionImpl::begin()
{
Poco::Mutex::ScopedLock l(_mutex);
SQLiteStatementImpl tmp(*this, _pDB);
tmp.add(DEFERRED_BEGIN_TRANSACTION);
tmp.execute();
_isTransaction = true;
}
void SessionImpl::commit()
{
Poco::Mutex::ScopedLock l(_mutex);
SQLiteStatementImpl tmp(*this, _pDB);
tmp.add(COMMIT_TRANSACTION);
tmp.execute();
_isTransaction = false;
}
void SessionImpl::rollback()
{
Poco::Mutex::ScopedLock l(_mutex);
SQLiteStatementImpl tmp(*this, _pDB);
tmp.add(ABORT_TRANSACTION);
tmp.execute();
_isTransaction = false;
}
void SessionImpl::setTransactionIsolation(Poco::UInt32 ti)
{
if (ti != Session::TRANSACTION_READ_COMMITTED)
throw Poco::InvalidArgumentException("setTransactionIsolation()");
}
Poco::UInt32 SessionImpl::getTransactionIsolation()
{
return Session::TRANSACTION_READ_COMMITTED;
}
bool SessionImpl::hasTransactionIsolation(Poco::UInt32 ti)
{
if (ti == Session::TRANSACTION_READ_COMMITTED) return true;
return false;
}
bool SessionImpl::isTransactionIsolation(Poco::UInt32 ti)
{
if (ti == Session::TRANSACTION_READ_COMMITTED) return true;
return false;
}
class ActiveConnector
{
public:
ActiveConnector(const std::string& connectString, sqlite3** ppDB):
connect(this, &ActiveConnector::connectImpl),
_connectString(connectString),
_ppDB(ppDB)
{
poco_check_ptr(_ppDB);
}
ActiveMethod<int, void, ActiveConnector> connect;
private:
ActiveConnector();
inline int connectImpl()
{
return sqlite3_open_v2(_connectString.c_str(), _ppDB, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE | SQLITE_OPEN_URI, NULL);
}
std::string _connectString;
sqlite3** _ppDB;
};
void SessionImpl::open(const std::string& connect)
{
if (connect != connectionString())
{
if (isConnected())
throw InvalidAccessException("Session already connected");
if (!connect.empty())
setConnectionString(connect);
}
poco_assert_dbg (!connectionString().empty());
try
{
ActiveConnector connector(connectionString(), &_pDB);
ActiveResult<int> result = connector.connect();
if (!result.tryWait(getLoginTimeout() * 1000))
throw ConnectionFailedException("Timed out.");
int rc = result.data();
if (rc != 0)
{
close();
Utility::throwException(rc);
}
}
catch (SQLiteException& ex)
{
throw ConnectionFailedException(ex.displayText());
}
_connected = true;
}
void SessionImpl::close()
{
if (_pDB)
{
sqlite3_close(_pDB);
_pDB = 0;
}
_connected = false;
}
bool SessionImpl::isConnected()
{
return _connected;
}
void SessionImpl::setConnectionTimeout(std::size_t timeout)
{
int tout = 1000 * timeout;
int rc = sqlite3_busy_timeout(_pDB, tout);
if (rc != 0) Utility::throwException(rc);
_timeout = tout;
}
void SessionImpl::setConnectionTimeout(const std::string& prop, const Poco::Any& value)
{
setConnectionTimeout(Poco::RefAnyCast<std::size_t>(value));
}
Poco::Any SessionImpl::getConnectionTimeout(const std::string& prop)
{
return Poco::Any(_timeout/1000);
}
void SessionImpl::autoCommit(const std::string&, bool)
{
// The problem here is to decide whether to call commit or rollback
// when autocommit is set to true. Hence, it is best not to implement
// this explicit call and only implicitly support autocommit setting.
throw NotImplementedException(
"SQLite autocommit is implicit with begin/commit/rollback.");
}
bool SessionImpl::isAutoCommit(const std::string&)
{
Poco::Mutex::ScopedLock l(_mutex);
return (0 != sqlite3_get_autocommit(_pDB));
}
// NOTE: Utility::dbHandle() has been moved here from Utility.cpp
// as a workaround for a failing AnyCast with Clang.
// See <https://github.com/pocoproject/poco/issues/578>
// for a discussion.
sqlite3* Utility::dbHandle(const Session& session)
{
return AnyCast<sqlite3*>(session.getProperty("handle"));
}
} } } // namespace Poco::Data::SQLite