monero/contrib/epee/include/soci_helper.h

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// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Andrey N. Sabelnikov nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#pragma once
#include "soci.h"
#include "soci-postgresql.h"
using namespace epee;
namespace soci
{
template <>
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struct type_conversion<uint64_t>
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{
typedef long long base_type;
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static void from_base(base_type a_, indicator ind, uint64_t & mi)
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{
if (ind == i_null)
{
mi = 0;
//throw soci_error("Null value not allowed for this type");
}
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mi = (uint64_t)a_;
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//mi.set(i);
}
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static void to_base(const uint64_t & mi, base_type & i, indicator & ind)
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{
i = (base_type)mi;
ind = i_ok;
}
};
template <>
struct type_conversion<bool>
{
typedef int base_type;
static void from_base(base_type a_, indicator ind, bool& mi)
{
if (ind == i_null)
{
mi = false;
//throw soci_error("Null value not allowed for this type");
}
mi = a_? true:false;
//mi.set(i);
}
static void to_base(const bool & mi, base_type & i, indicator & ind)
{
i = mi? 1:0;
ind = i_ok;
}
};
class per_thread_session
{
public:
bool init(const std::string& connection_string)
{
m_connection_string = connection_string;
return true;
}
soci::session& get()
{
//soci::session
m_db_connections_lock.lock();
boost::shared_ptr<soci::session>& conn_ptr = m_db_connections[epee::misc_utils::get_thread_string_id()];
m_db_connections_lock.unlock();
if(!conn_ptr.get())
{
conn_ptr.reset(new soci::session(soci::postgresql, m_connection_string));
}
//init new connection
return *conn_ptr.get();
}
bool reopen()
{
//soci::session
m_db_connections_lock.lock();
boost::shared_ptr<soci::session>& conn_ptr = m_db_connections[misc_utils::get_thread_string_id()];
m_db_connections_lock.unlock();
if(conn_ptr.get())
{
conn_ptr->close();
conn_ptr.reset(new soci::session(soci::postgresql, m_connection_string));
}
//init new connection
return true;
}
//----------------------------------------------------------------------------------------------
bool check_status()
{
return true;
}
protected:
private:
std::map<std::string, boost::shared_ptr<soci::session> > m_db_connections;
epee::critical_section m_db_connections_lock;
std::string m_connection_string;
};
}
/*}*/