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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 <QxFactory/IxFactory.h>
    00047
    00048 #include <QxTraits/get_base_class.h>
    00049 #include <QxTraits/get_class_name.h>
    00050 #include <QxTraits/get_primary_key.h>
    00051
    00052 #define QX_STR_CANNOT_INSTANTIATE_ABSTRACT_CLASS "[QxOrm] qx::QxFactory<T> ---> cannot instantiate abstract class '%s'"
    00053
    00054 #if _QX_AUTO_REGISTER_REPOSITORY
    00055 #define QX_AUTO_REGISTER_REPOSITORY(className, sKey) qx::register_repository< className >(sKey);
    00056 #else // _QX_AUTO_REGISTER_REPOSITORY
    00057 #define QX_AUTO_REGISTER_REPOSITORY(className, sKey) /* Nothing */
    00058 #endif // _QX_AUTO_REGISTER_REPOSITORY
    00059
    00060 namespace qx {
    00061
    00062 template <class T>
    00063 class QxClass;
    00064
    00065 #if _QX_AUTO_REGISTER_REPOSITORY
    00066 template <class T>
    00067 inline void register_repository(const QString & sKey);
    00068 #endif // _QX_AUTO_REGISTER_REPOSITORY
    00069
    00074 template <class T>
    00075 class QxFactory : public IxFactory
    00076 {
    00077
    00078 public:
    00079
    00080    QxFactory(const QString & sKey) : IxFactory(sKey) { QX_AUTO_REGISTER_REPOSITORY(T, sKey); }
    00081    virtual ~QxFactory() { ; }
    00082
    00083    virtual qx::any createObject(bool bRawPointer = false) const
    00084    { QxClass<T>::getSingleton(); return qxCreateInstance<std::is_abstract<T>::value, 0>::create(bRawPointer); }
    00085
    00086    virtual void * createObjectNudePtr() const
    00087    { QxClass<T>::getSingleton(); return qxCreateInstance<std::is_abstract<T>::value, 0>::createNudePtr(); }
    00088
    00089 #ifndef _QX_NO_RTTI
    00090    virtual const std::type_info & typeInfo() const
    00091    { return typeid(T); }
    00092 #endif // _QX_NO_RTTI
    00093
    00094 private:
    00095
    00096    template <bool bIsAbstract /* = false */, int dummy>
    00097    struct qxCreateInstance
    00098    {
    00099       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); }
    00100       static inline void * createNudePtr()            { return static_cast<void *>(new T()); }
    00101    };
    00102
    00103    template <int dummy>
    00104    struct qxCreateInstance<true, dummy>
    00105    {
    00106       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(); }
    00107       static inline void * createNudePtr()            { qDebug(QX_STR_CANNOT_INSTANTIATE_ABSTRACT_CLASS, qx::trait::get_class_name<T>::get()); return NULL; }
    00108    };
    00109
    00110 };
    00111
    00112 } // namespace qx
    00113
    00114 #include "../../inl/QxFactory/QxFactory.inl"
    00115
    00116 #endif // _QX_FACTORY_H_