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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
    00044 #include <boost/tuple/tuple.hpp>
    00045 #include <boost/tuple/tuple_comparison.hpp>
    00046 #include <boost/tuple/tuple_io.hpp>
    00047
    00048 inline std::size_t hash_value(const QString & s)      { return qHash(s); }
    00049 inline std::size_t hash_value(const QDate & d)        { return qHash(d.toJulianDay()); }
    00050 inline std::size_t hash_value(const QTime & t)        { return qHash(t.toString()); }
    00051 inline std::size_t hash_value(const QDateTime & dt)   { return qHash(dt.toString()); }
    00052 inline std::size_t hash_value(const QVariant & v)     { return qHash(v.toString()); }
    00053
    00054 template <typename T0, typename T1>
    00055 inline std::size_t hash_value(const boost::tuple<T0, T1> & tu)
    00056 {
    00057    std::size_t seed = 0;
    00058    boost::hash_combine(seed, boost::get<0>(tu));
    00059    boost::hash_combine(seed, boost::get<1>(tu));
    00060    return seed;
    00061 }
    00062
    00063 template <typename T0, class T1, typename T2>
    00064 inline std::size_t hash_value(const boost::tuple<T0, T1, T2> & tu)
    00065 {
    00066    std::size_t seed = 0;
    00067    boost::hash_combine(seed, boost::get<0>(tu));
    00068    boost::hash_combine(seed, boost::get<1>(tu));
    00069    boost::hash_combine(seed, boost::get<2>(tu));
    00070    return seed;
    00071 }
    00072
    00073 template <typename T0, typename T1, typename T2, typename T3>
    00074 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3> & tu)
    00075 {
    00076    std::size_t seed = 0;
    00077    boost::hash_combine(seed, boost::get<0>(tu));
    00078    boost::hash_combine(seed, boost::get<1>(tu));
    00079    boost::hash_combine(seed, boost::get<2>(tu));
    00080    boost::hash_combine(seed, boost::get<3>(tu));
    00081    return seed;
    00082 }
    00083
    00084 template <typename T0, typename T1, typename T2, typename T3, typename T4>
    00085 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4> & tu)
    00086 {
    00087    std::size_t seed = 0;
    00088    boost::hash_combine(seed, boost::get<0>(tu));
    00089    boost::hash_combine(seed, boost::get<1>(tu));
    00090    boost::hash_combine(seed, boost::get<2>(tu));
    00091    boost::hash_combine(seed, boost::get<3>(tu));
    00092    boost::hash_combine(seed, boost::get<4>(tu));
    00093    return seed;
    00094 }
    00095
    00096 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5>
    00097 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5> & tu)
    00098 {
    00099    std::size_t seed = 0;
    00100    boost::hash_combine(seed, boost::get<0>(tu));
    00101    boost::hash_combine(seed, boost::get<1>(tu));
    00102    boost::hash_combine(seed, boost::get<2>(tu));
    00103    boost::hash_combine(seed, boost::get<3>(tu));
    00104    boost::hash_combine(seed, boost::get<4>(tu));
    00105    boost::hash_combine(seed, boost::get<5>(tu));
    00106    return seed;
    00107 }
    00108
    00109 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6>
    00110 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6> & 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    boost::hash_combine(seed, boost::get<6>(tu));
    00120    return seed;
    00121 }
    00122
    00123 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7>
    00124 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7> & tu)
    00125 {
    00126    std::size_t seed = 0;
    00127    boost::hash_combine(seed, boost::get<0>(tu));
    00128    boost::hash_combine(seed, boost::get<1>(tu));
    00129    boost::hash_combine(seed, boost::get<2>(tu));
    00130    boost::hash_combine(seed, boost::get<3>(tu));
    00131    boost::hash_combine(seed, boost::get<4>(tu));
    00132    boost::hash_combine(seed, boost::get<5>(tu));
    00133    boost::hash_combine(seed, boost::get<6>(tu));
    00134    boost::hash_combine(seed, boost::get<7>(tu));
    00135    return seed;
    00136 }
    00137
    00138 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8>
    00139 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8> & tu)
    00140 {
    00141    std::size_t seed = 0;
    00142    boost::hash_combine(seed, boost::get<0>(tu));
    00143    boost::hash_combine(seed, boost::get<1>(tu));
    00144    boost::hash_combine(seed, boost::get<2>(tu));
    00145    boost::hash_combine(seed, boost::get<3>(tu));
    00146    boost::hash_combine(seed, boost::get<4>(tu));
    00147    boost::hash_combine(seed, boost::get<5>(tu));
    00148    boost::hash_combine(seed, boost::get<6>(tu));
    00149    boost::hash_combine(seed, boost::get<7>(tu));
    00150    boost::hash_combine(seed, boost::get<8>(tu));
    00151    return seed;
    00152 }
    00153
    00154 template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename T9>
    00155 inline std::size_t hash_value(const boost::tuple<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9> & tu)
    00156 {
    00157    std::size_t seed = 0;
    00158    boost::hash_combine(seed, boost::get<0>(tu));
    00159    boost::hash_combine(seed, boost::get<1>(tu));
    00160    boost::hash_combine(seed, boost::get<2>(tu));
    00161    boost::hash_combine(seed, boost::get<3>(tu));
    00162    boost::hash_combine(seed, boost::get<4>(tu));
    00163    boost::hash_combine(seed, boost::get<5>(tu));
    00164    boost::hash_combine(seed, boost::get<6>(tu));
    00165    boost::hash_combine(seed, boost::get<7>(tu));
    00166    boost::hash_combine(seed, boost::get<8>(tu));
    00167    boost::hash_combine(seed, boost::get<9>(tu));
    00168    return seed;
    00169 }
    00170
    00171 #endif // _QX_HASH_VALUE_H_

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