QxOrm  1.4.8
C++ Object Relational Mapping library
QxFactory.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_FACTORY_H_
00033 #define _QX_FACTORY_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00046 #include <QtCore/qobject.h>
00047 
00048 #include <QxFactory/IxFactory.h>
00049 
00050 #include <QxTraits/get_base_class.h>
00051 #include <QxTraits/get_class_name.h>
00052 #include <QxTraits/get_primary_key.h>
00053 
00054 #define QX_STR_CANNOT_INSTANTIATE_ABSTRACT_CLASS "[QxOrm] qx::QxFactory<T> ---> cannot instantiate abstract class '%s'"
00055 
00056 #if _QX_AUTO_REGISTER_REPOSITORY
00057 #define QX_AUTO_REGISTER_REPOSITORY(className, sKey) qx::register_repository< className >(sKey);
00058 #else // _QX_AUTO_REGISTER_REPOSITORY
00059 #define QX_AUTO_REGISTER_REPOSITORY(className, sKey) /* Nothing */
00060 #endif // _QX_AUTO_REGISTER_REPOSITORY
00061 
00062 namespace qx {
00063 
00064 class IxPersistable;
00065 template <class T> class QxClass;
00066 
00067 #ifdef _QX_ENABLE_QT_NETWORK
00068 namespace service {
00069 class IxService;
00070 class IxParameter;
00071 } // namespace service
00072 #endif // _QX_ENABLE_QT_NETWORK
00073 
00074 #if _QX_AUTO_REGISTER_REPOSITORY
00075 template <class T>
00076 inline void register_repository(const QString & sKey);
00077 #endif // _QX_AUTO_REGISTER_REPOSITORY
00078 
00083 template <class T>
00084 class QxFactory : public IxFactory
00085 {
00086 
00087 public:
00088 
00089    QxFactory(const QString & sKey) : IxFactory(sKey) { QX_AUTO_REGISTER_REPOSITORY(T, sKey); }
00090    virtual ~QxFactory() { ; }
00091 
00092 #ifdef _QX_ENABLE_QT_NETWORK
00093    virtual qx::any createObject(bool bRawPointer = false) const
00094    { QxClass<T>::getSingleton(); return qxCreateInstance<std::is_abstract<T>::value, std::is_base_of<qx::IxPersistable, T>::value, std::is_base_of<qx::service::IxService, T>::value, std::is_base_of<qx::service::IxParameter, T>::value, std::is_base_of<QObject, T>::value, 0>::create(bRawPointer); }
00095 
00096    virtual void * createObjectNudePtr() const
00097    { QxClass<T>::getSingleton(); return qxCreateInstance<std::is_abstract<T>::value, std::is_base_of<qx::IxPersistable, T>::value, std::is_base_of<qx::service::IxService, T>::value, std::is_base_of<qx::service::IxParameter, T>::value, std::is_base_of<QObject, T>::value, 0>::createNudePtr(); }
00098 #else // _QX_ENABLE_QT_NETWORK
00099    virtual qx::any createObject(bool bRawPointer = false) const
00100    { QxClass<T>::getSingleton(); return qxCreateInstance<std::is_abstract<T>::value, std::is_base_of<qx::IxPersistable, T>::value, false, false, std::is_base_of<QObject, T>::value, 0>::create(bRawPointer); }
00101 
00102    virtual void * createObjectNudePtr() const
00103    { QxClass<T>::getSingleton(); return qxCreateInstance<std::is_abstract<T>::value, std::is_base_of<qx::IxPersistable, T>::value, false, false, std::is_base_of<QObject, T>::value, 0>::createNudePtr(); }
00104 #endif // _QX_ENABLE_QT_NETWORK
00105 
00106 #ifndef _QX_NO_RTTI
00107    virtual const std::type_info & typeInfo() const
00108    { return typeid(T); }
00109 #endif // _QX_NO_RTTI
00110 
00111 private:
00112 
00113    template <bool bIsAbstract /* = false */, bool bIsIxPersistable /* = false */, bool bIsIxService /* = false */, bool bIsIxParameter /* = false */, bool bIsQObject /* = false */, int dummy>
00114    struct qxCreateInstance
00115    {
00116       static inline qx::any create(bool bRawPointer)  { if (bRawPointer) { T * p = new T(); return qx::any(p); }; std::shared_ptr<T> ptr = std::make_shared<T>(); return qx::any(ptr); }
00117       static inline void * createNudePtr()            { return static_cast<void *>(new T()); }
00118    };
00119 
00120    template <bool bIsIxPersistable, bool bIsIxService, bool bIsIxParameter, bool bIsQObject, int dummy>
00121    struct qxCreateInstance<true, bIsIxPersistable, bIsIxService, bIsIxParameter, bIsQObject, dummy>
00122    {
00123       static inline qx::any create(bool bRawPointer)  { Q_UNUSED(bRawPointer); qDebug(QX_STR_CANNOT_INSTANTIATE_ABSTRACT_CLASS, qx::trait::get_class_name<T>::get()); return qx::any(); }
00124       static inline void * createNudePtr()            { qDebug(QX_STR_CANNOT_INSTANTIATE_ABSTRACT_CLASS, qx::trait::get_class_name<T>::get()); return NULL; }
00125    };
00126 
00127    template <bool bIsQObject, int dummy>
00128    struct qxCreateInstance<false, true, false, false, bIsQObject, dummy>
00129    {
00130       static inline qx::any create(bool bRawPointer)  { if (bRawPointer) { T * p = new T(); return qx::any(p); }; std::shared_ptr<T> ptr = std::make_shared<T>(); return qx::any(ptr); }
00131       static inline void * createNudePtr()            { return static_cast<qx::IxPersistable *>(new T()); }
00132    };
00133 
00134 #ifdef _QX_ENABLE_QT_NETWORK
00135    template <bool bIsQObject, int dummy>
00136    struct qxCreateInstance<false, false, true, false, bIsQObject, dummy>
00137    {
00138       static inline qx::any create(bool bRawPointer)  { if (bRawPointer) { T * p = new T(); return qx::any(p); }; std::shared_ptr<T> ptr = std::make_shared<T>(); return qx::any(ptr); }
00139       static inline void * createNudePtr()            { return static_cast<qx::service::IxService *>(new T()); }
00140    };
00141 
00142    template <bool bIsQObject, int dummy>
00143    struct qxCreateInstance<false, false, false, true, bIsQObject, dummy>
00144    {
00145       static inline qx::any create(bool bRawPointer)  { if (bRawPointer) { T * p = new T(); return qx::any(p); }; std::shared_ptr<T> ptr = std::make_shared<T>(); return qx::any(ptr); }
00146       static inline void * createNudePtr()            { return static_cast<qx::service::IxParameter *>(new T()); }
00147    };
00148 #endif // _QX_ENABLE_QT_NETWORK
00149 
00150    template <int dummy>
00151    struct qxCreateInstance<false, false, false, false, true, dummy>
00152    {
00153       static inline qx::any create(bool bRawPointer)  { if (bRawPointer) { T * p = new T(); return qx::any(p); }; std::shared_ptr<T> ptr = std::make_shared<T>(); return qx::any(ptr); }
00154       static inline void * createNudePtr()            { return static_cast<QObject *>(new T()); }
00155    };
00156 
00157 };
00158 
00159 } // namespace qx
00160 
00161 #include "../../inl/QxFactory/QxFactory.inl"
00162 
00163 #endif // _QX_FACTORY_H_