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101 lines
3.5 KiB
101 lines
3.5 KiB
/****************************************************************************
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**
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** https://www.qxorm.com/
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** Copyright (C) 2013 Lionel Marty (contact@qxorm.com)
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**
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** This file is part of the QxOrm library
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any
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** damages arising from the use of this software
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**
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** Commercial Usage
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** Licensees holding valid commercial QxOrm licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Lionel Marty
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file 'license.gpl3.txt' included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met : http://www.gnu.org/copyleft/gpl.html
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**
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** If you are unsure which license is appropriate for your use, or
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** if you have questions regarding the use of this file, please contact :
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** contact@qxorm.com
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**
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****************************************************************************/
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#ifndef _QX_SERIALIZE_CHECK_INSTANCE_H_
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#define _QX_SERIALIZE_CHECK_INSTANCE_H_
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#ifdef _MSC_VER
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#pragma once
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#endif
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/*!
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* \file QxSerializeCheckInstance.h
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* \author Lionel Marty
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* \ingroup QxSerialize
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* \brief Check instance during serialization process to avoid infinite loop with circular references (using RAII)
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*/
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#include <QtCore/qset.h>
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#include <QtCore/qpair.h>
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#include <QtCore/qthread.h>
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namespace qx {
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class QxSqlRelationLinked;
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class IxClass;
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} // namespace qx
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namespace qx {
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namespace serialization {
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namespace helper {
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/*!
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* \ingroup QxSerialize
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* \brief qx::serialization::helper::QxSerializeCheckInstance : check instance during serialization process to avoid infinite loop with circular references (using RAII)
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*/
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class QX_DLL_EXPORT QxSerializeCheckInstance
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{
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public:
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typedef QPair<std::shared_ptr<qx::QxSqlRelationLinked>, QString> type_hierarchy;
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protected:
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static QSet< QPair<Qt::HANDLE, QPair<qptrdiff, qx::IxClass *> > > m_lstInstanceByThread; //!< List of all instances currently used by a serialization process
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static QHash<Qt::HANDLE, int> m_hashLevelByThread; //!< Manage how deep level is serialization process
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static QHash<Qt::HANDLE, type_hierarchy> m_hashHierarchyByThread; //!< Store current hierarchy used by serialization process
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static QMutex m_mutex; //!< Mutex => qx::serialization::helper::QxSerializeCheckInstance is thread-safe
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qptrdiff m_pInstance; //!< Instance associated to this helper class
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Qt::HANDLE m_lThreadId; //!< Thread id associated to this helper class
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qx::IxClass * m_pClass; //!< Class associated to this helper class
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public:
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QxSerializeCheckInstance(const void * pInstance, qx::IxClass * pClass);
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virtual ~QxSerializeCheckInstance();
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static bool contains(const void * pInstance, qx::IxClass * pClass);
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static bool isRoot();
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static type_hierarchy getHierarchy();
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static void setHierarchy(const type_hierarchy & hierarchy);
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};
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} // namespace helper
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} // namespace serialization
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} // namespace qx
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#endif // _QX_SERIALIZE_CHECK_INSTANCE_H_
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