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QxDao_IsDirty.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
    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_DAO_IS_DIRTY_H_
    00033 #define _QX_DAO_IS_DIRTY_H_
    00034
    00035 #ifdef _MSC_VER
    00036 #pragma once
    00037 #endif
    00038
    00039 #include <QtCore/qstringlist.h>
    00040
    00041 #include <QxDao/QxSqlQueryBuilder.h>
    00042 #include <QxDao/IxSqlRelation.h>
    00043
    00044 #include <QxTraits/is_qx_registered.h>
    00045 #include <QxTraits/is_container.h>
    00046 #include <QxTraits/is_smart_ptr.h>
    00047 #include <QxTraits/generic_container.h>
    00048
    00049 namespace qx {
    00050 namespace dao {
    00051 namespace detail {
    00052
    00053 template <class T>
    00054 inline void is_dirty(const T & obj1, const T & obj2, QStringList & lstDiff);
    00055
    00056 template <class T>
    00057 struct QxDao_IsDirty_Generic
    00058 {
    00059
    00060    static void compare(const T & obj1, const T & obj2, QStringList & lstDiff)
    00061    {
    00062       static_assert(qx::trait::is_qx_registered<T>::value, "qx::trait::is_qx_registered<T>::value");
    00063
    00064       qx::QxSqlQueryBuilder_Count<T> builder; builder.init();
    00065       qx::IxDataMember * pId = builder.getDataId();
    00066       if (pId && (! pId->isEqual((& obj1), (& obj2)))) { lstDiff.append(pId->getKey()); }
    00067
    00068       long l = 0;
    00069       qx::IxDataMember * p = NULL;
    00070       while ((p = builder.nextData(l)))
    00071       { if (p && (! p->isEqual((& obj1), (& obj2)))) { lstDiff.append(p->getKey()); } }
    00072    }
    00073
    00074 };
    00075
    00076 template <class T>
    00077 struct QxDao_IsDirty_Container
    00078 {
    00079
    00080    static void compare(const T & obj1, const T & obj2, QStringList & lstDiff)
    00081    {
    00082       if (qx::trait::generic_container<T>::size(obj1) <= 0) { return; }
    00083       if (qx::trait::generic_container<T>::size(obj1) != qx::trait::generic_container<T>::size(obj2)) { lstDiff.append("*"); return; }
    00084
    00085       long lCurrIndex = 0;
    00086       typename T::const_iterator it2 = obj2.begin();
    00087
    00088       for (typename T::const_iterator it1 = obj1.begin(); it1 != obj1.end(); ++it1)
    00089       {
    00090          QStringList lstDiffItem;
    00091          qx::dao::detail::is_dirty((* it1), (* it2), lstDiffItem);
    00092          if (lstDiffItem.count() > 0) { lstDiff.append(QString::number(lCurrIndex) + "|" + lstDiffItem.join("|")); }
    00093          ++lCurrIndex; ++it2;
    00094       }
    00095    }
    00096
    00097 };
    00098
    00099 template <class T>
    00100 struct QxDao_IsDirty_Ptr
    00101 {
    00102
    00103    static void compare(const T & obj1, const T & obj2, QStringList & lstDiff)
    00104    { qx::dao::detail::is_dirty((* obj1), (* obj2), lstDiff); }
    00105
    00106 };
    00107
    00108 template <class T>
    00109 struct QxDao_IsDirty
    00110 {
    00111
    00112    static void compare(const T & obj1, const T & obj2, QStringList & lstDiff)
    00113    {
    00114       typedef typename std::conditional< std::is_pointer<T>::value, qx::dao::detail::QxDao_IsDirty_Ptr<T>, qx::dao::detail::QxDao_IsDirty_Generic<T> >::type type_dao_1;
    00115       typedef typename std::conditional< qx::trait::is_smart_ptr<T>::value, qx::dao::detail::QxDao_IsDirty_Ptr<T>, type_dao_1 >::type type_dao_2;
    00116       typedef typename std::conditional< qx::trait::is_container<T>::value, qx::dao::detail::QxDao_IsDirty_Container<T>, type_dao_2 >::type type_dao_3;
    00117       type_dao_3::compare(obj1, obj2, lstDiff);
    00118    }
    00119
    00120 };
    00121
    00122 template <class T>
    00123 inline void is_dirty(const T & obj1, const T & obj2, QStringList & lstDiff)
    00124 { return qx::dao::detail::QxDao_IsDirty<T>::compare(obj1, obj2, lstDiff); }
    00125
    00126 } // namespace detail
    00127 } // namespace dao
    00128 } // namespace qx
    00129
    00130 #endif // _QX_DAO_IS_DIRTY_H_