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/*
* Copyright (C) 2015 Christian Ehringfeld <c.ehringfeld@t-online.de>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
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#ifndef RELATION_H
#define RELATION_H
#include <QString>
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#include <QHash>
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namespace CuteEntityManager {
enum RelationType {
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ONE_TO_ONE, //e.g. specialization, heritage
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ONE_TO_MANY, //@OneToMany(cascade=ALL, mappedBy="customer")
MANY_TO_ONE, //1-n Entity foreign key in same table
MANY_TO_MANY,
};

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enum InheritanceStrategy {
PER_CLASS_TABLE,
JOINED_TABLE,
};

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enum CascadeType {
ALL,
MERGE,
PERSIST,
REFRESH,
REMOVE,
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};

class Relation {
public:
Relation();
Relation(QString propertyName, RelationType type, bool optional = true);
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/**
* @brief Relation
* @param propertyName
* @param type
* @param mappedBy Q_PROPERTY in foreign Entity
*/
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Relation(QString propertyName, RelationType type, QString mappedBy,
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QList<CascadeType> cascadeType = {MERGE, PERSIST, REFRESH});
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~Relation();
RelationType getType() const;
void setType(const RelationType &value);

QString getPropertyName() const;
void setPropertyName(const QString &value);

bool getOptional() const;
void setOptional(bool value);

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QString getMappedBy() const;
void setMappedBy(const QString &value);

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QList<CascadeType> getCascadeType() const;
void setCascadeType(const QList<CascadeType> &value);
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protected:
QString propertyName;
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QString mappedBy;
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RelationType type;
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QList<CascadeType> cascadeType;
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bool optional;

};
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inline bool operator==(const Relation &e1, const Relation &e2) {
return e1.getPropertyName() == e2.getPropertyName();
}

inline uint qHash(const Relation &key, uint seed) {
return qHash(key.getPropertyName(), seed);
}

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}

#endif // RELATION_H