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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_