QxOrm  1.4.5
C++ Object Relational Mapping library
QxSerializeQDataStream_std_map.h
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00001 /****************************************************************************
00002 **
00003 ** https://www.qxorm.com/
00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
00005 **
00006 ** This file is part of the QxOrm library
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00018 ** GNU General Public License Usage
00019 ** Alternatively, this file may be used under the terms of the GNU
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00031 
00032 #ifndef _QX_SERIALIZE_QDATASTREAM_STD_MAP_H_
00033 #define _QX_SERIALIZE_QDATASTREAM_STD_MAP_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00046 #include <QtCore/qdatastream.h>
00047 
00048 #include <map>
00049 
00050 template <typename Key, typename Value>
00051 QDataStream & operator<< (QDataStream & stream, const std::map<Key, Value> & t)
00052 {
00053    typedef typename std::map<Key, Value>::const_iterator type_itr;
00054    quint64 uiSize = static_cast<quint64>(t.size());
00055    stream << uiSize;
00056 
00057    for (type_itr itr = t.begin(); itr != t.end(); ++itr)
00058    {
00059       stream << itr->first;
00060       stream << itr->second;
00061    }
00062 
00063    return stream;
00064 }
00065 
00066 template <typename Key, typename Value>
00067 QDataStream & operator>> (QDataStream & stream, std::map<Key, Value> & t)
00068 {
00069    quint64 uiSize = 0;
00070    stream >> uiSize;
00071    t.clear();
00072 
00073    for (quint64 i = 0; i < uiSize; ++i)
00074    {
00075       Key key;       stream >> key;
00076       Value value;   stream >> value;
00077       t.insert(std::make_pair(key, value));
00078    }
00079 
00080    return stream;
00081 }
00082 
00083 #endif // _QX_SERIALIZE_QDATASTREAM_STD_MAP_H_