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QxHashValue.h
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    00001 /****************************************************************************
    00002 **
    00003 ** http://www.qxorm.com/
    00004 ** http://sourceforge.net/projects/qxorm/
    00005 ** Original file by Lionel Marty
    00006 **
    00007 ** This file is part of the QxOrm library
    00008 **
    00009 ** This software is provided 'as-is', without any express or implied
    00010 ** warranty. In no event will the authors be held liable for any
    00011 ** damages arising from the use of this software.
    00012 **
    00013 ** GNU Lesser General Public License Usage
    00014 ** This file must be used under the terms of the GNU Lesser
    00015 ** General Public License version 2.1 as published by the Free Software
    00016 ** Foundation and appearing in the file 'license.lgpl.txt' included in the
    00017 ** packaging of this file.  Please review the following information to
    00018 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00019 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00020 **
    00021 ** If you have questions regarding the use of this file, please contact :
    00022 ** contact@qxorm.com
    00023 **
    00024 ****************************************************************************/
    00025
    00026 #ifndef _QX_HASH_VALUE_H_
    00027 #define _QX_HASH_VALUE_H_
    00028
    00029 #ifdef _MSC_VER
    00030 #pragma once
    00031 #endif
    00032
    00040 #include <QtCore/qstring.h>
    00041 #include <QtCore/qdatetime.h>
    00042 #include <QtCore/qvariant.h>
    00043 #include <QtCore/qpair.h>
    00044
    00045 #include <boost/tuple/tuple.hpp>
    00046 #include <boost/tuple/tuple_comparison.hpp>
    00047 #include <boost/tuple/tuple_io.hpp>
    00048
    00049 inline std::size_t hash_value(const QString & s)      { return qHash(s); }
    00050 inline std::size_t hash_value(const QDate & d)        { return qHash(d.toJulianDay()); }
    00051 inline std::size_t hash_value(const QTime & t)        { return qHash(t.toString()); }
    00052 inline std::size_t hash_value(const QDateTime & dt)   { return qHash(dt.toString()); }
    00053 inline std::size_t hash_value(const QVariant & v)     { return qHash(v.toString()); }
    00054
    00055 template <typename T0, typename T1>
    00056 inline std::size_t hash_value(const QPair<T0, T1> & p)
    00057 {
    00058    std::size_t seed = 0;
    00059    boost::hash_combine(seed, p.first);
    00060    boost::hash_combine(seed, p.second);
    00061    return seed;
    00062 }
    00063
    00064 namespace boost {
    00065 namespace tuples {
    00066
    00067 template <typename T0, typename T1>
    00068 inline std::size_t hash_value(const boost::tuple<T0, T1> & tu)
    00069 {
    00070    std::size_t seed = 0;
    00071    boost::hash_combine(seed, boost::get<0>(tu));
    00072    boost::hash_combine(seed, boost::get<1>(tu));
    00073    return seed;
    00074 }
    00075
    00076 template <typename T0, class T1, typename T2>
    00077 inline std::size_t hash_value(const boost::tuple<T0, T1, T2> & tu)
    00078 {
    00079    std::size_t seed = 0;
    00080    boost::hash_combine(seed, boost::get<0>(tu));
    00081    boost::hash_combine(seed, boost::get<1>(tu));
    00082    boost::hash_combine(seed, boost::get<2>(tu));
    00083    return seed;
    00084 }
    00085
    00086 template <typename T0, typename T1, typename T2, typename T3>
    00087 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3> & tu)
    00088 {
    00089    std::size_t seed = 0;
    00090    boost::hash_combine(seed, boost::get<0>(tu));
    00091    boost::hash_combine(seed, boost::get<1>(tu));
    00092    boost::hash_combine(seed, boost::get<2>(tu));
    00093    boost::hash_combine(seed, boost::get<3>(tu));
    00094    return seed;
    00095 }
    00096
    00097 template <typename T0, typename T1, typename T2, typename T3, typename T4>
    00098 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4> & tu)
    00099 {
    00100    std::size_t seed = 0;
    00101    boost::hash_combine(seed, boost::get<0>(tu));
    00102    boost::hash_combine(seed, boost::get<1>(tu));
    00103    boost::hash_combine(seed, boost::get<2>(tu));
    00104    boost::hash_combine(seed, boost::get<3>(tu));
    00105    boost::hash_combine(seed, boost::get<4>(tu));
    00106    return seed;
    00107 }
    00108
    00109 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5>
    00110 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5> & tu)
    00111 {
    00112    std::size_t seed = 0;
    00113    boost::hash_combine(seed, boost::get<0>(tu));
    00114    boost::hash_combine(seed, boost::get<1>(tu));
    00115    boost::hash_combine(seed, boost::get<2>(tu));
    00116    boost::hash_combine(seed, boost::get<3>(tu));
    00117    boost::hash_combine(seed, boost::get<4>(tu));
    00118    boost::hash_combine(seed, boost::get<5>(tu));
    00119    return seed;
    00120 }
    00121
    00122 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6>
    00123 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6> & tu)
    00124 {
    00125    std::size_t seed = 0;
    00126    boost::hash_combine(seed, boost::get<0>(tu));
    00127    boost::hash_combine(seed, boost::get<1>(tu));
    00128    boost::hash_combine(seed, boost::get<2>(tu));
    00129    boost::hash_combine(seed, boost::get<3>(tu));
    00130    boost::hash_combine(seed, boost::get<4>(tu));
    00131    boost::hash_combine(seed, boost::get<5>(tu));
    00132    boost::hash_combine(seed, boost::get<6>(tu));
    00133    return seed;
    00134 }
    00135
    00136 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7>
    00137 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7> & tu)
    00138 {
    00139    std::size_t seed = 0;
    00140    boost::hash_combine(seed, boost::get<0>(tu));
    00141    boost::hash_combine(seed, boost::get<1>(tu));
    00142    boost::hash_combine(seed, boost::get<2>(tu));
    00143    boost::hash_combine(seed, boost::get<3>(tu));
    00144    boost::hash_combine(seed, boost::get<4>(tu));
    00145    boost::hash_combine(seed, boost::get<5>(tu));
    00146    boost::hash_combine(seed, boost::get<6>(tu));
    00147    boost::hash_combine(seed, boost::get<7>(tu));
    00148    return seed;
    00149 }
    00150
    00151 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8>
    00152 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8> & tu)
    00153 {
    00154    std::size_t seed = 0;
    00155    boost::hash_combine(seed, boost::get<0>(tu));
    00156    boost::hash_combine(seed, boost::get<1>(tu));
    00157    boost::hash_combine(seed, boost::get<2>(tu));
    00158    boost::hash_combine(seed, boost::get<3>(tu));
    00159    boost::hash_combine(seed, boost::get<4>(tu));
    00160    boost::hash_combine(seed, boost::get<5>(tu));
    00161    boost::hash_combine(seed, boost::get<6>(tu));
    00162    boost::hash_combine(seed, boost::get<7>(tu));
    00163    boost::hash_combine(seed, boost::get<8>(tu));
    00164    return seed;
    00165 }
    00166
    00167 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9>
    00168 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> & tu)
    00169 {
    00170    std::size_t seed = 0;
    00171    boost::hash_combine(seed, boost::get<0>(tu));
    00172    boost::hash_combine(seed, boost::get<1>(tu));
    00173    boost::hash_combine(seed, boost::get<2>(tu));
    00174    boost::hash_combine(seed, boost::get<3>(tu));
    00175    boost::hash_combine(seed, boost::get<4>(tu));
    00176    boost::hash_combine(seed, boost::get<5>(tu));
    00177    boost::hash_combine(seed, boost::get<6>(tu));
    00178    boost::hash_combine(seed, boost::get<7>(tu));
    00179    boost::hash_combine(seed, boost::get<8>(tu));
    00180    boost::hash_combine(seed, boost::get<9>(tu));
    00181    return seed;
    00182 }
    00183
    00184 } // namespace tuples
    00185 } // namespace boost
    00186
    00187 #endif // _QX_HASH_VALUE_H_

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