QxOrm  1.2.3
C++ Object Relational Mapping library
QxDataMember.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_DATA_MEMBER_H_
00027 #define _QX_DATA_MEMBER_H_
00028 
00029 #ifdef _MSC_VER
00030 #pragma once
00031 #endif
00032 
00040 #include <boost/serialization/serialization.hpp>
00041 #include <boost/serialization/nvp.hpp>
00042 
00043 #include <boost/tuple/tuple.hpp>
00044 #include <boost/tuple/tuple_comparison.hpp>
00045 #include <boost/tuple/tuple_io.hpp>
00046 
00047 #include <QxDataMember/IxDataMember.h>
00048 
00049 #include <QxCommon/QxStringCvt.h>
00050 
00051 #include <QxTraits/is_equal.h>
00052 
00053 #define QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(ArchiveInput, ArchiveOutput) \
00054 virtual void toArchive(const void * pOwner, ArchiveOutput & ar) const   { QxDataMember::toArchive(ar, getNamePtr(), getData(pOwner)); } \
00055 virtual void fromArchive(void * pOwner, ArchiveInput & ar)              { QxDataMember::fromArchive(ar, getNamePtr(), getData(pOwner)); }
00056 
00057 namespace qx {
00058 
00063 template <typename DataType, class Owner>
00064 class QxDataMember : public IxDataMember
00065 {
00066 
00067 protected:
00068 
00069    typedef DataType Owner::* type_data_member_ptr;
00070 
00071    type_data_member_ptr m_pData; 
00072 
00073 public:
00074 
00075    QxDataMember(type_data_member_ptr pData, const QString & sKey) : IxDataMember(sKey), m_pData(pData) { m_bAccessDataPointer = true; }
00076    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; }
00077    virtual ~QxDataMember() { ; }
00078 
00079    inline DataType * getData(void * pOwner) const              { return (pOwner ? (& ((static_cast<Owner *>(pOwner))->*m_pData)) : NULL); }
00080    inline const DataType * getData(const void * pOwner) const  { return (pOwner ? (& ((static_cast<const Owner *>(pOwner))->*m_pData)) : NULL); }
00081 
00082    virtual QString toString(const void * pOwner, const QString & sFormat, int iIndexName = -1) const              { return qx::cvt::to_string((* getData(pOwner)), sFormat, iIndexName); }
00083    virtual qx_bool fromString(void * pOwner, const QString & s, const QString & sFormat, int iIndexName = -1)     { return qx::cvt::from_string(s, (* getData(pOwner)), sFormat, iIndexName); }
00084    virtual QVariant toVariant(const void * pOwner, const QString & sFormat, int iIndexName = -1) const            { return qx::cvt::to_variant((* getData(pOwner)), sFormat, iIndexName); }
00085    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); }
00086 
00087    virtual bool isEqual(const void * pOwner1, const void * pOwner2) const
00088    {
00089       if ((pOwner1 == NULL) || (pOwner2 == NULL)) { return false; }
00090       if (pOwner1 == pOwner2) { return true; }
00091       return qxCompareDataMember<qx::trait::has_operator_equal_equal<DataType>::value, 0>::isEqual((* this), pOwner1, pOwner2);
00092    }
00093 
00094 protected:
00095 
00096    virtual boost::any getDataPtr(const void * pOwner) const    { return boost::any(getData(pOwner)); }
00097    virtual boost::any getDataPtr(void * pOwner)                { return boost::any(getData(pOwner)); }
00098    virtual void * getDataVoidPtr(const void * pOwner) const    { return static_cast<void *>(const_cast<DataType *>(getData(pOwner))); }
00099    virtual void * getDataVoidPtr(void * pOwner)                { return static_cast<void *>(getData(pOwner)); }
00100 
00101 public:
00102 
00103 #if _QX_SERIALIZE_POLYMORPHIC
00104    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::polymorphic_iarchive, boost::archive::polymorphic_oarchive)
00105 #endif // _QX_SERIALIZE_POLYMORPHIC
00106 
00107 #if _QX_SERIALIZE_BINARY
00108    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::binary_iarchive, boost::archive::binary_oarchive)
00109 #endif // _QX_SERIALIZE_BINARY
00110 
00111 #if _QX_SERIALIZE_TEXT
00112    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::text_iarchive, boost::archive::text_oarchive)
00113 #endif // _QX_SERIALIZE_TEXT
00114 
00115 #if _QX_SERIALIZE_XML
00116    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::xml_iarchive, boost::archive::xml_oarchive)
00117 #endif // _QX_SERIALIZE_XML
00118 
00119 #if _QX_SERIALIZE_PORTABLE_BINARY
00120    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(eos::portable_iarchive, eos::portable_oarchive)
00121 #endif // _QX_SERIALIZE_PORTABLE_BINARY
00122 
00123 #if _QX_SERIALIZE_WIDE_BINARY
00124    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::binary_wiarchive, boost::archive::binary_woarchive)
00125 #endif // _QX_SERIALIZE_WIDE_BINARY
00126 
00127 #if _QX_SERIALIZE_WIDE_TEXT
00128    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::text_wiarchive, boost::archive::text_woarchive)
00129 #endif // _QX_SERIALIZE_WIDE_TEXT
00130 
00131 #if _QX_SERIALIZE_WIDE_XML
00132    QX_DATA_MEMBER_IMPL_VIRTUAL_ARCHIVE(boost::archive::xml_wiarchive, boost::archive::xml_woarchive)
00133 #endif // _QX_SERIALIZE_WIDE_XML
00134 
00135 private:
00136 
00137    template <class Archive>
00138    static inline void toArchive(Archive & ar, const char * sName, const DataType * pData)
00139    { ar << boost::serialization::make_nvp(sName, (* pData)); }
00140 
00141    template <class Archive>
00142    static inline void fromArchive(Archive & ar, const char * sName, DataType * pData)
00143    { ar >> boost::serialization::make_nvp(sName, (* pData)); }
00144 
00145 private:
00146 
00147    template <bool bCanCompare /* = false */, int dummy>
00148    struct qxCompareDataMember
00149    {
00150       static inline bool isEqual(const QxDataMember<DataType, Owner> & dataMember, const void * pOwner1, const void * pOwner2)
00151       { return (dataMember.toString(pOwner1, "") == dataMember.toString(pOwner2, "")); }
00152    };
00153 
00154    template <int dummy>
00155    struct qxCompareDataMember<true, dummy>
00156    {
00157       static inline bool isEqual(const QxDataMember<DataType, Owner> & dataMember, const void * pOwner1, const void * pOwner2)
00158       { return ((* dataMember.getData(pOwner1)) == (* dataMember.getData(pOwner2))); }
00159    };
00160 
00161 };
00162 
00163 } // namespace qx
00164 
00165 #include "../../inl/QxDataMember/QxDataMember.inl"
00166 
00167 #endif // _QX_DATA_MEMBER_H_