/****************************************************************************
**
** Copyright (C) 2010 QxOrm France and/or its subsidiary(-ies)
** Contact: QxOrm France Information (contact@qxorm.com)
**
** This file is part of the QxOrm library
**
** Commercial Usage
** Licensees holding valid QxOrm Commercial licenses may use this file in
** accordance with the QxOrm Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and QxOrm France
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file 'license.gpl3.txt' included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html
**
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** contact the support department at support@qxorm.com
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****************************************************************************/

#ifndef _QX_IS_BOOST_UNORDERED_SET_H_
#define _QX_IS_BOOST_UNORDERED_SET_H_

#ifdef _MSC_VER
#pragma once
#endif

#include <boost/unordered_set.hpp>
#include <boost/mpl/if.hpp>
#include <boost/mpl/logical.hpp>

namespace qx {
namespace trait {

template <typename T>
class is_boost_unordered_set
{

private:

   template <typename V> static char isContainer(const boost::unordered_set<V> &);
   template <typename V> static char isContainer(const boost::unordered_multiset<V> &);
   static int isContainer(...);
   static T t;

public:

   enum { value = (sizeof(qx::trait::is_boost_unordered_set<T>::isContainer(t)) == sizeof(char)) };

   typedef typename boost::mpl::if_c<qx::trait::is_boost_unordered_set<T>::value, 
                                     boost::mpl::true_, 
                                     boost::mpl::false_>::type type;

};

} // namespace trait
} // namespace qx

#endif // _QX_IS_BOOST_UNORDERED_SET_H_
