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QxOrm
1.2.3
C++ Object Relational Mapping library
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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_DAO_POINTER_H_ 00027 #define _QX_DAO_POINTER_H_ 00028 00029 #ifdef _MSC_VER 00030 #pragma once 00031 #endif 00032 00040 #include <QtCore/qsharedpointer.h> 00041 #include <QtCore/qstringlist.h> 00042 00043 namespace qx { 00044 template <class T> QSharedPointer<T> clone_to_qt_shared_ptr(const T & obj); 00045 } // namespace qx 00046 00047 namespace qx { 00048 namespace dao { 00049 00050 namespace detail { 00051 template <class T> struct QxDao_IsDirty; 00052 } // namespace detail 00053 00119 template <typename T> 00120 class ptr 00121 { 00122 00123 private: 00124 00125 QSharedPointer<T> m_pWork; 00126 QSharedPointer<T> m_pOriginal; 00127 00128 public: 00129 00130 ptr() { ; } 00131 explicit ptr(T * ptr) : m_pWork(ptr) { ; } 00132 explicit ptr(T * ptr, T * original) : m_pWork(ptr), m_pOriginal(original) { ; } 00133 ptr(const qx::dao::ptr<T> & other) : m_pWork(other.m_pWork), m_pOriginal(other.m_pOriginal) { ; } 00134 ptr(const QSharedPointer<T> & other) : m_pWork(other) { ; } 00135 ptr(const QSharedPointer<T> & other, const QSharedPointer<T> & original) : m_pWork(other), m_pOriginal(original) { ; } 00136 ptr(const QWeakPointer<T> & other) : m_pWork(other) { ; } 00137 ptr(const QWeakPointer<T> & other, const QWeakPointer<T> & original) : m_pWork(other), m_pOriginal(original) { ; } 00138 virtual ~ptr() { ; } 00139 00140 template <typename Deleter> ptr(T * ptr, Deleter deleter) : m_pWork(ptr, deleter) { ; } 00141 template <typename Deleter> ptr(T * ptr, T * original, Deleter deleter) : m_pWork(ptr, deleter), m_pOriginal(original) { ; } 00142 00143 template <class X> ptr(const qx::dao::ptr<X> & other) : m_pWork(qSharedPointerCast<T>(other.m_pWork)), m_pOriginal(qSharedPointerCast<T>(other.m_pOriginal)) { ; } 00144 template <class X> ptr(const QSharedPointer<X> & other) : m_pWork(qSharedPointerCast<T>(other)) { ; } 00145 template <class X> ptr(const QSharedPointer<X> & other, const QSharedPointer<T> & original) : m_pWork(qSharedPointerCast<T>(other)), m_pOriginal(qSharedPointerCast<T>(original)) { ; } 00146 template <class X> ptr(const QWeakPointer<X> & other) : m_pWork(qSharedPointerCast<T>(other.toStrongRef())) { ; } 00147 template <class X> ptr(const QWeakPointer<X> & other, const QWeakPointer<X> & original) : m_pWork(qSharedPointerCast<T>(other.toStrongRef())), m_pOriginal(qSharedPointerCast<T>(original.toStrongRef())) { ; } 00148 00149 qx::dao::ptr<T> & operator=(const qx::dao::ptr<T> & other) { m_pWork = other.m_pWork; m_pOriginal = other.m_pOriginal; return (* this); } 00150 qx::dao::ptr<T> & operator=(const QSharedPointer<T> & other) { m_pWork = other; m_pOriginal.clear(); return (* this); } 00151 qx::dao::ptr<T> & operator=(const QWeakPointer<T> & other) { m_pWork = other; m_pOriginal.clear(); return (* this); } 00152 00153 template <class X> qx::dao::ptr<T> & operator=(const qx::dao::ptr<X> & other) { m_pWork = qSharedPointerCast<T>(other.m_pWork); m_pOriginal = qSharedPointerCast<T>(other.m_pOriginal); return (* this); } 00154 template <class X> qx::dao::ptr<T> & operator=(const QSharedPointer<X> & other) { m_pWork = qSharedPointerCast<T>(other); m_pOriginal.clear(); return (* this); } 00155 template <class X> qx::dao::ptr<T> & operator=(const QWeakPointer<X> & other) { m_pWork = qSharedPointerCast<T>(other.toStrongRef()); m_pOriginal.clear(); return (* this); } 00156 00157 inline T * get() const { return m_pWork.data(); } 00158 inline T * getOriginal() const { return m_pOriginal.data(); } 00159 inline T * data() const { return m_pWork.data(); } 00160 inline T * dataOriginal() const { return m_pOriginal.data(); } 00161 inline bool isNull() const { return m_pWork.isNull(); } 00162 inline operator bool() const { return (! m_pWork.isNull()); } 00163 inline bool operator!() const { return m_pWork.isNull(); } 00164 inline T & operator*() const { return (* m_pWork.data()); } 00165 inline T * operator->() const { return m_pWork.data(); } 00166 inline void clear() { m_pWork.clear(); m_pOriginal.clear(); } 00167 inline void reset() { m_pWork.clear(); m_pOriginal.clear(); } 00168 inline void reset(const QSharedPointer<T> & ptr) { m_pWork = ptr; m_pOriginal.clear(); } 00169 inline void resetOriginal(const QSharedPointer<T> & ptr) { m_pOriginal = ptr; } 00170 inline void saveToOriginal() { m_pOriginal.clear(); if (m_pWork) { m_pOriginal = qx::clone_to_qt_shared_ptr(* m_pWork); } } 00171 inline void restoreFromOriginal() { m_pWork.clear(); if (m_pOriginal) { m_pWork = qx::clone_to_qt_shared_ptr(* m_pOriginal); } } 00172 inline bool isDirty() const { QStringList lstDiff; return isDirty(lstDiff); } 00173 inline QSharedPointer<T> toQtSharedPointer() const { return m_pWork; } 00174 00175 template <class X> qx::dao::ptr<X> staticCast() const { return qx::dao::ptr<X>(m_pWork.staticCast<X>(), m_pOriginal.staticCast<X>()); } 00176 template <class X> qx::dao::ptr<X> dynamicCast() const { return qx::dao::ptr<X>(m_pWork.dynamicCast<X>(), m_pOriginal.dynamicCast<X>()); } 00177 template <class X> qx::dao::ptr<X> constCast() const { return qx::dao::ptr<X>(m_pWork.constCast<X>(), m_pOriginal.constCast<X>()); } 00178 00179 bool isDirty(QStringList & lstDiff) const 00180 { 00181 lstDiff.clear(); 00182 if (m_pWork.isNull() || m_pOriginal.isNull()) { lstDiff.append("*"); return true; } 00183 if (m_pWork == m_pOriginal) { return false; } 00184 qx::dao::detail::QxDao_IsDirty<T>::compare((* m_pWork), (* m_pOriginal), lstDiff); 00185 return (! lstDiff.isEmpty()); 00186 } 00187 00188 }; 00189 00190 } // namespace dao 00191 } // namespace qx 00192 00193 template<class T, class X> bool operator==(const qx::dao::ptr<T> & ptr1, const qx::dao::ptr<X> & ptr2) { return (ptr1.toQtSharedPointer() == ptr2.toQtSharedPointer()); } 00194 template<class T, class X> bool operator!=(const qx::dao::ptr<T> & ptr1, const qx::dao::ptr<X> & ptr2) { return (ptr1.toQtSharedPointer() != ptr2.toQtSharedPointer()); } 00195 template<class T, class X> bool operator==(const qx::dao::ptr<T> & ptr1, const X * ptr2) { return (ptr1.toQtSharedPointer() == ptr2); } 00196 template<class T, class X> bool operator!=(const qx::dao::ptr<T> & ptr1, const X * ptr2) { return (ptr1.toQtSharedPointer() != ptr2); } 00197 template<class T, class X> bool operator==(const T * ptr1, const qx::dao::ptr<X> & ptr2) { return (ptr1 == ptr2.toQtSharedPointer()); } 00198 template<class T, class X> bool operator!=(const T * ptr1, const qx::dao::ptr<X> & ptr2) { return (ptr1 != ptr2.toQtSharedPointer()); } 00199 00200 #endif // _QX_DAO_POINTER_H_