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session.cpp
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session.cpp
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//
// Copyright (C) 2004-2008 Maciej Sobczak, Stephen Hutton
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
#define SOCI_SOURCE
#include "session.h"
#include "connection-pool.h"
#include "soci-backend.h"
#include "backend-loader.h"
#ifdef _MSC_VER
#pragma warning(disable:4355)
#endif
using namespace soci;
using namespace soci::details;
namespace // anonymous
{
void parseConnectString(std::string const & connectString,
std::string & backendName,
std::string & connectionParameters)
{
std::string const protocolSeparator = "://";
std::string::size_type const p = connectString.find(protocolSeparator);
if (p == std::string::npos)
{
throw soci_error("No backend name found in " + connectString);
}
backendName = connectString.substr(0, p);
connectionParameters = connectString.substr(p + protocolSeparator.size());
}
void ensureConnected(session_backend * backEnd)
{
if (backEnd == NULL)
{
throw soci_error("Session is not connected.");
}
}
} // namespace anonymous
session::session()
: once(this), prepare(this), logStream_(NULL),
lastFactory_(NULL), uppercaseColumnNames_(false), backEnd_(NULL),
isFromPool_(false), pool_(NULL)
{
}
session::session(backend_factory const & factory,
std::string const & connectString)
: once(this), prepare(this), logStream_(NULL),
lastFactory_(&factory), lastConnectString_(connectString),
uppercaseColumnNames_(false),
isFromPool_(false), pool_(NULL)
{
backEnd_ = factory.make_session(connectString);
}
session::session(std::string const & backendName,
std::string const & connectString)
: once(this), prepare(this), logStream_(NULL),
uppercaseColumnNames_(false),
isFromPool_(false), pool_(NULL)
{
backend_factory const & factory = dynamic_backends::get(backendName);
lastFactory_ = &factory;
lastConnectString_ = connectString;
backEnd_ = factory.make_session(connectString);
}
session::session(std::string const & connectString)
: once(this), prepare(this), logStream_(NULL),
uppercaseColumnNames_(false),
isFromPool_(false), pool_(NULL)
{
std::string backendName;
std::string connectionParameters;
parseConnectString(connectString, backendName, connectionParameters);
backend_factory const & factory = dynamic_backends::get(backendName);
lastFactory_ = &factory;
lastConnectString_ = connectionParameters;
backEnd_ = factory.make_session(connectionParameters);
}
session::session(connection_pool & pool)
: isFromPool_(true), pool_(&pool)
{
poolPosition_ = pool.lease();
session & pooledSession = pool.at(poolPosition_);
once.set_session(&pooledSession);
prepare.set_session(&pooledSession);
backEnd_ = pooledSession.get_backend();
}
session::~session()
{
if (isFromPool_)
{
pool_->give_back(poolPosition_);
}
else
{
delete backEnd_;
}
}
void session::open(backend_factory const & factory,
std::string const & connectString)
{
if (isFromPool_)
{
pool_->at(poolPosition_).open(factory, connectString);
backEnd_ = pool_->at(poolPosition_).get_backend();
}
else
{
if (backEnd_ != NULL)
{
throw soci_error("Cannot open already connected session.");
}
backEnd_ = factory.make_session(connectString);
lastFactory_ = &factory;
lastConnectString_ = connectString;
}
}
void session::open(std::string const & backendName,
std::string const & connectString)
{
if (isFromPool_)
{
pool_->at(poolPosition_).open(backendName, connectString);
backEnd_ = pool_->at(poolPosition_).get_backend();
}
else
{
if (backEnd_ != NULL)
{
throw soci_error("Cannot open already connected session.");
}
backend_factory const & factory = dynamic_backends::get(backendName);
backEnd_ = factory.make_session(connectString);
lastFactory_ = &factory;
lastConnectString_ = connectString;
}
}
void session::open(std::string const & connectString)
{
if (isFromPool_)
{
pool_->at(poolPosition_).open(connectString);
backEnd_ = pool_->at(poolPosition_).get_backend();
}
else
{
if (backEnd_ != NULL)
{
throw soci_error("Cannot open already connected session.");
}
std::string backendName;
std::string connectionParameters;
parseConnectString(connectString, backendName, connectionParameters);
backend_factory const & factory = dynamic_backends::get(backendName);
backEnd_ = factory.make_session(connectionParameters);
lastFactory_ = &factory;
lastConnectString_ = connectionParameters;
}
}
void session::close()
{
if (isFromPool_)
{
pool_->at(poolPosition_).close();
backEnd_ = NULL;
}
else
{
delete backEnd_;
backEnd_ = NULL;
}
}
void session::reconnect()
{
if (isFromPool_)
{
pool_->at(poolPosition_).reconnect();
backEnd_ = pool_->at(poolPosition_).get_backend();
}
else
{
if (lastFactory_ == NULL)
{
throw soci_error("Cannot reconnect without previous connection.");
}
if (backEnd_ != NULL)
{
close();
}
backEnd_ = lastFactory_->make_session(lastConnectString_);
}
}
void session::begin()
{
backEnd_->begin();
}
void session::commit()
{
backEnd_->commit();
}
void session::rollback()
{
backEnd_->rollback();
}
std::ostringstream & session::get_query_stream()
{
if (isFromPool_)
{
return pool_->at(poolPosition_).get_query_stream();
}
else
{
return query_stream_;
}
}
void session::set_log_stream(std::ostream * s)
{
if (isFromPool_)
{
pool_->at(poolPosition_).set_log_stream(s);
}
else
{
logStream_ = s;
}
}
std::ostream * session::get_log_stream() const
{
if (isFromPool_)
{
return pool_->at(poolPosition_).get_log_stream();
}
else
{
return logStream_;
}
}
void session::log_query(std::string const & query)
{
if (isFromPool_)
{
pool_->at(poolPosition_).log_query(query);
}
else
{
if (logStream_ != NULL)
{
*logStream_ << query << '\n';
}
lastQuery_ = query;
}
}
std::string session::get_last_query() const
{
if (isFromPool_)
{
return pool_->at(poolPosition_).get_last_query();
}
else
{
return lastQuery_;
}
}
void session::set_got_data(bool gotData)
{
if (isFromPool_)
{
pool_->at(poolPosition_).set_got_data(gotData);
}
else
{
gotData_ = gotData;
}
}
bool session::got_data() const
{
if (isFromPool_)
{
return pool_->at(poolPosition_).got_data();
}
else
{
return gotData_;
}
}
void session::uppercase_column_names(bool forceToUpper)
{
if (isFromPool_)
{
pool_->at(poolPosition_).uppercase_column_names(forceToUpper);
}
else
{
uppercaseColumnNames_ = forceToUpper;
}
}
bool session::get_uppercase_column_names() const
{
if (isFromPool_)
{
return pool_->at(poolPosition_).get_uppercase_column_names();
}
else
{
return uppercaseColumnNames_;
}
}
bool session::get_next_sequence_value(std::string const & sequence, long & value)
{
ensureConnected(backEnd_);
return backEnd_->get_next_sequence_value(*this, sequence, value);
}
bool session::get_last_insert_id(std::string const & sequence, long & value)
{
ensureConnected(backEnd_);
return backEnd_->get_last_insert_id(*this, sequence, value);
}
std::string session::get_backend_name() const
{
return backEnd_->get_backend_name();
}
statement_backend * session::make_statement_backend()
{
ensureConnected(backEnd_);
return backEnd_->make_statement_backend();
}
rowid_backend * session::make_rowid_backend()
{
ensureConnected(backEnd_);
return backEnd_->make_rowid_backend();
}
blob_backend * session::make_blob_backend()
{
ensureConnected(backEnd_);
return backEnd_->make_blob_backend();
}