5251bf3a
 Steven de Ridder
Initial commit. d...
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/* ****************************************************************************
* Copyright 2019 Open Systems Development BV *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the "Software"), *
* to deal in the Software without restriction, including without limitation *
* the rights to use, copy, modify, merge, publish, distribute, sublicense, *
* and/or sell copies of the Software, and to permit persons to whom the *
* Software is furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included in *
* all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR *
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL *
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER *
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING *
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER *
* DEALINGS IN THE SOFTWARE. *
* ***************************************************************************/
#ifndef OSDEV_COMPONENTS_ORMHANDLER_H
#define OSDEV_COMPONENTS_ORMHANDLER_H
#include <memory>
#include <QObject>
#include <QHash>
#include <QSharedPointer>
#include <QString>
#include "dbconnector.h"
#include "ormtable.h"
#include "ormreldata.h"
namespace osdev {
namespace components {
/**
* @brief Handles the Object Relational Model
*/
class OrmHandler : public QObject
{
Q_OBJECT
public:
enum class OrmStatus
{
OrmStatusSuccess = 0,
OrmStatusNoRelation,
OrmStatusFailed
};
/**
* @brief Constructor
* @param parent Parent QObject
*/
explicit OrmHandler(QObject *parent = nullptr);
/// Deleted copy-constructor
OrmHandler(const OrmHandler&) = delete;
/// Deleted assignment operator
OrmHandler& operator=(const OrmHandler&) = delete;
/// Deleted move-constructor
OrmHandler(const OrmHandler&&) = delete;
/// Deleted move operator
OrmHandler& operator=(const OrmHandler&&) = delete;
virtual ~OrmHandler();
/// @brief Start the ORM handler
void start();
public slots:
/**
* @brief Receive data from an external source
* @param dataContainer - Data received Each layer has shared ownership of the
* pointer it receives. (See SSD @TODO Actualy SSD needs updating on this issue.)
*/
void receiveData( const QSharedPointer<ORMRelData>& dataContainer );
/*!
* \brief Gets the primary key from the given tableName
* \param tableName - The table we're interested in.
* \return The primary keyfield name.
*/
QString getPrimaryKey( const QString& tableName ) const;
signals:
/*!
* \brief Signal for RejectedData.
* \param dataContainer The data container for this signal.
*/
void signalRejectedData( const QSharedPointer<ORMRelData>& dataContainer );
private:
/**
* @brief Create an Object Relational Model object for a specific table
* @param _table Table name
* @return True if successful, false otherwise
*/
bool createOrmObject( const QString& _table );
/*!
* \brief Create an ORM object for a specific relation or constraint.
*
* \param table The name of the table for which to create an ORM relation.
* \return true if the object was created. False if something went wrong.
*/
OrmStatus createOrmRelation( const QString& table );
// Internal structures and objects.
QHash<QString, OrmTable*> m_qhOrmTables; ///< Maps table-name to TableModel*
DbConnector m_dbConnection; ///< Database connection
QString m_className; ///< Name of the class for logging purposes
};
} // End namespace components
} // End namespace osdev
#endif // OSDEV_COMPONENTS_ORMHANDLER_H
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