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151 lines
4.6 KiB
151 lines
4.6 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_SQL_RELATION_LINKED_H_
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#define _QX_SQL_RELATION_LINKED_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 QxSqlRelationLinked.h
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* \author Lionel Marty
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* \ingroup QxDao
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* \brief Hierarchy of relationships to build SQL query
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*/
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#include <QtSql/qsqlerror.h>
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#include <QxCommon/QxBool.h>
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#include <QxDao/IxSqlRelation.h>
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#include <QxCollection/QxCollection.h>
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namespace qx {
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namespace dao {
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namespace detail {
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class IxDao_Helper;
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} // namespace detail
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} // namespace dao
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} // namespace qx
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namespace qx {
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class IxClass;
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/*!
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* \ingroup QxDao
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* \brief qx::QxSqlRelationLinked : hierarchy of relationships to build SQL query
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*
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* Here is the structure, each real relation has a relation linked associated to build the hierarchy, like this :
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* \code
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(<root>, <relation_linked>)
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("blog", blog_relation)
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("blog", <relation_linked>)
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("author", author_relation)
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("author", <relation_linked>)
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("list_blog", list_blog_relation)
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("list_blog", <relation_linked>)
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(etc...)
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("comment", comment_relation)
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("comment", <relation_linked>)
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("blog_id", blog_id_relation)
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("blog_id", <relation_linked>)
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(etc...)
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("category", category_relation)
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("category", <relation_linked>)
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("list_blog", list_blog_relation)
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("list_blog", <relation_linked>)
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(etc...)
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* \endcode
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*/
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class QX_DLL_EXPORT QxSqlRelationLinked
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{
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public:
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typedef std::shared_ptr<QxSqlRelationLinked> type_ptr;
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typedef std::tuple<qx::dao::sql_join::join_type, IxSqlRelation *, QPair<QSet<QString>, long>, QString, bool> type_relation;
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typedef qx::QxCollection<QString, type_relation> type_lst_relation;
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typedef QHash<QString, type_ptr> type_lst_relation_linked;
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private:
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struct QxSqlRelationLinkedImpl;
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std::unique_ptr<QxSqlRelationLinkedImpl> m_pImpl; //!< Private implementation idiom
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public:
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QxSqlRelationLinked();
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QxSqlRelationLinked(bool bRoot);
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virtual ~QxSqlRelationLinked();
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static type_ptr getHierarchy(IxClass * pClass, const QStringList & sRelationX, qx_bool & bOk, qx::dao::detail::IxDao_Helper * pDaoHelper = NULL);
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void hierarchySelect(QxSqlRelationParams & params);
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void hierarchyFrom(QxSqlRelationParams & params);
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void hierarchyJoin(QxSqlRelationParams & params);
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void hierarchyWhereSoftDelete(QxSqlRelationParams & params);
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void hierarchyResolveOutput(QxSqlRelationParams & params);
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QSqlError hierarchyOnBeforeSave(QxSqlRelationParams & params);
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QSqlError hierarchyOnAfterSave(QxSqlRelationParams & params);
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void updateOffset(QxSqlRelationParams & params);
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bool getCartesianProduct() const;
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long getAllRelationCount() const;
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long getRelationCount() const;
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bool existRelation(const QString & sKey) const;
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type_lst_relation_linked getRelationLinkedX() const;
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type_lst_relation getRelationX() const;
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bool isRoot() const;
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bool checkRootColumns(const QString & s) const;
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long getRootColumnsCount() const;
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long getRootColumnsOffset() const;
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void setRootColumnsOffset(long l);
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QString getRootCustomAlias() const;
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protected:
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bool isValidDaoHelper(QxSqlRelationParams & params) const;
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};
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typedef std::shared_ptr<QxSqlRelationLinked> QxSqlRelationLinked_ptr;
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} // namespace qx
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#endif // _QX_SQL_RELATION_LINKED_H_
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