QxOrm  1.4.2
C++ Object Relational Mapping library
QxDataMember.h
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00001 /****************************************************************************
00002 **
00003 ** http://www.qxorm.com/
00004 ** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
00005 **
00006 ** This file is part of the QxOrm library
00007 **
00008 ** This software is provided 'as-is', without any express or implied
00009 ** warranty. In no event will the authors be held liable for any
00010 ** damages arising from the use of this software
00011 **
00012 ** Commercial Usage
00013 ** Licensees holding valid commercial QxOrm licenses may use this file in
00014 ** accordance with the commercial license agreement provided with the
00015 ** Software or, alternatively, in accordance with the terms contained in
00016 ** a written agreement between you and Lionel Marty
00017 **
00018 ** GNU General Public License Usage
00019 ** Alternatively, this file may be used under the terms of the GNU
00020 ** General Public License version 3.0 as published by the Free Software
00021 ** Foundation and appearing in the file 'license.gpl3.txt' included in the
00022 ** packaging of this file. Please review the following information to
00023 ** ensure the GNU General Public License version 3.0 requirements will be
00024 ** met : http://www.gnu.org/copyleft/gpl.html
00025 **
00026 ** If you are unsure which license is appropriate for your use, or
00027 ** if you have questions regarding the use of this file, please contact :
00028 ** contact@qxorm.com
00029 **
00030 ****************************************************************************/
00031 
00032 #ifndef _QX_DATA_MEMBER_H_
00033 #define _QX_DATA_MEMBER_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00046 #ifdef _QX_ENABLE_BOOST_SERIALIZATION
00047 #include <boost/serialization/serialization.hpp>
00048 #include <boost/serialization/nvp.hpp>
00049 #endif // _QX_ENABLE_BOOST_SERIALIZATION
00050 
00051 #include <boost/tuple/tuple.hpp>
00052 #include <boost/tuple/tuple_comparison.hpp>
00053 #include <boost/tuple/tuple_io.hpp>
00054 
00055 #include <QxDataMember/IxDataMember.h>
00056 
00057 #include <QxConvert/QxConvert.h>
00058 
00059 #include <QxTraits/is_equal.h>
00060 
00061 #define QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(ArchiveInput, ArchiveOutput) \
00062 virtual void toArchive(const void * pOwner, ArchiveOutput & ar) const   { QxDataMember::toArchive(ar, getNamePtr(), getData(pOwner)); } \
00063 virtual void fromArchive(void * pOwner, ArchiveInput & ar)              { QxDataMember::fromArchive(ar, getNamePtr(), getData(pOwner)); }
00064 
00065 namespace qx {
00066 
00071 template <typename DataType, class Owner>
00072 class QxDataMember : public IxDataMember
00073 {
00074 
00075 protected:
00076 
00077    typedef DataType Owner::* type_data_member_ptr;
00078 
00079    type_data_member_ptr m_pData; 
00080 
00081 public:
00082 
00083    QxDataMember(type_data_member_ptr pData, const QString & sKey) : IxDataMember(sKey), m_pData(pData) { m_bAccessDataPointer = true; }
00084    QxDataMember(type_data_member_ptr pData, const QString & sKey, long lVersion, bool bSerialize, bool bDao) : IxDataMember(sKey, lVersion, bSerialize, bDao), m_pData(pData) { m_bAccessDataPointer = true; }
00085    virtual ~QxDataMember() { ; }
00086 
00087    inline DataType * getData(void * pOwner) const              { return (pOwner ? (& ((static_cast<Owner *>(pOwner))->*m_pData)) : NULL); }
00088    inline const DataType * getData(const void * pOwner) const  { return (pOwner ? (& ((static_cast<const Owner *>(pOwner))->*m_pData)) : NULL); }
00089 
00090    virtual QVariant toVariant(const void * pOwner, const QString & sFormat, int iIndexName = -1) const            { return qx::cvt::to_variant((* getData(pOwner)), sFormat, iIndexName); }
00091    virtual qx_bool fromVariant(void * pOwner, const QVariant & v, const QString & sFormat, int iIndexName = -1)   { return qx::cvt::from_variant(v, (* getData(pOwner)), sFormat, iIndexName); }
00092 
00093 #ifndef _QX_NO_JSON
00094    virtual QJsonValue toJson(const void * pOwner, const QString & sFormat) const             { return qx::cvt::to_json((* getData(pOwner)), sFormat); }
00095    virtual qx_bool fromJson(void * pOwner, const QJsonValue & j, const QString & sFormat)    { return qx::cvt::from_json(j, (* getData(pOwner)), sFormat); }
00096 #endif // _QX_NO_JSON
00097 
00098    virtual bool isEqual(const void * pOwner1, const void * pOwner2) const
00099    {
00100       if ((pOwner1 == NULL) || (pOwner2 == NULL)) { return false; }
00101       if (pOwner1 == pOwner2) { return true; }
00102       return qxCompareDataMember<qx::trait::has_operator_equal_equal<DataType>::value, 0>::isEqual((* this), pOwner1, pOwner2);
00103    }
00104 
00105 protected:
00106 
00107    virtual boost::any getDataPtr(const void * pOwner) const    { return boost::any(getData(pOwner)); }
00108    virtual boost::any getDataPtr(void * pOwner)                { return boost::any(getData(pOwner)); }
00109    virtual void * getDataVoidPtr(const void * pOwner) const    { return static_cast<void *>(const_cast<DataType *>(getData(pOwner))); }
00110    virtual void * getDataVoidPtr(void * pOwner)                { return static_cast<void *>(getData(pOwner)); }
00111 
00112 public:
00113 
00114 #ifdef _QX_ENABLE_BOOST_SERIALIZATION
00115 
00116 #if _QX_SERIALIZE_POLYMORPHIC
00117    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::polymorphic_iarchive, boost::archive::polymorphic_oarchive)
00118 #endif // _QX_SERIALIZE_POLYMORPHIC
00119 
00120 #if _QX_SERIALIZE_BINARY
00121    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::binary_iarchive, boost::archive::binary_oarchive)
00122 #endif // _QX_SERIALIZE_BINARY
00123 
00124 #if _QX_SERIALIZE_TEXT
00125    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::text_iarchive, boost::archive::text_oarchive)
00126 #endif // _QX_SERIALIZE_TEXT
00127 
00128 #if _QX_SERIALIZE_XML
00129    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::xml_iarchive, boost::archive::xml_oarchive)
00130 #endif // _QX_SERIALIZE_XML
00131 
00132 #if _QX_SERIALIZE_PORTABLE_BINARY
00133    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(eos::portable_iarchive, eos::portable_oarchive)
00134 #endif // _QX_SERIALIZE_PORTABLE_BINARY
00135 
00136 #if _QX_SERIALIZE_WIDE_BINARY
00137    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::binary_wiarchive, boost::archive::binary_woarchive)
00138 #endif // _QX_SERIALIZE_WIDE_BINARY
00139 
00140 #if _QX_SERIALIZE_WIDE_TEXT
00141    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::text_wiarchive, boost::archive::text_woarchive)
00142 #endif // _QX_SERIALIZE_WIDE_TEXT
00143 
00144 #if _QX_SERIALIZE_WIDE_XML
00145    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::xml_wiarchive, boost::archive::xml_woarchive)
00146 #endif // _QX_SERIALIZE_WIDE_XML
00147 
00148 #endif // _QX_ENABLE_BOOST_SERIALIZATION
00149 
00150 private:
00151 
00152 #ifdef _QX_ENABLE_BOOST_SERIALIZATION
00153 
00154    template <class Archive>
00155    static inline void toArchive(Archive & ar, const char * sName, const DataType * pData)
00156    { ar << boost::serialization::make_nvp(sName, (* pData)); }
00157 
00158    template <class Archive>
00159    static inline void fromArchive(Archive & ar, const char * sName, DataType * pData)
00160    { ar >> boost::serialization::make_nvp(sName, (* pData)); }
00161 
00162 #endif // _QX_ENABLE_BOOST_SERIALIZATION
00163 
00164 private:
00165 
00166    template <bool bCanCompare /* = false */, int dummy>
00167    struct qxCompareDataMember
00168    {
00169       static inline bool isEqual(const QxDataMember<DataType, Owner> & dataMember, const void * pOwner1, const void * pOwner2)
00170       { return (dataMember.toVariant(pOwner1, "") == dataMember.toVariant(pOwner2, "")); }
00171    };
00172 
00173    template <int dummy>
00174    struct qxCompareDataMember<true, dummy>
00175    {
00176       static inline bool isEqual(const QxDataMember<DataType, Owner> & dataMember, const void * pOwner1, const void * pOwner2)
00177       { return ((* dataMember.getData(pOwner1)) == (* dataMember.getData(pOwner2))); }
00178    };
00179 
00180 };
00181 
00182 } // namespace qx
00183 
00184 #include "../../inl/QxDataMember/QxDataMember.inl"
00185 
00186 #endif // _QX_DATA_MEMBER_H_