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/*
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* Copyright (C) 2015 Christian Ehringfeld <c.ehringfeld@t-online.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef RELATION_H
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#define RELATION_H
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#include <QString>
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#include <QHash>
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namespace CuteEntityManager {
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enum RelationType {
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ONE_TO_ONE = 0, //e.g. specialization, heritage
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ONE_TO_MANY = 1, //@OneToMany(cascade=ALL, mappedBy="customer") e.g. QList<QSharedPointer<Person>>
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MANY_TO_ONE = 2, //e.g. QSharedPointer<Person>
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//1-n Entity foreign key in same table
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MANY_TO_MANY = 3, //e.g. QList<QSharedPointer<Person>> - realized with seperated database table
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};
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enum InheritanceStrategy {
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PER_CLASS_TABLE,
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JOINED_TABLE,
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};
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enum CascadeType {
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ALL,
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MERGE,
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PERSIST,
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REFRESH,
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REMOVE,
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};
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class Relation {
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public:
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Q_DECL_EXPORT explicit Relation();
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Q_DECL_EXPORT explicit Relation(QString propertyName, bool optional, RelationType type);
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/**
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* @brief Relation
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* @param propertyName
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* @param type
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* @param mappedBy Q_PROPERTY in foreign Entity
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*/
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Q_DECL_EXPORT explicit Relation(QString propertyName, RelationType type,
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QString mappedBy = QString(),
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QList<CascadeType> cascadeType = {MERGE, PERSIST, REFRESH});
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Q_DECL_EXPORT ~Relation();
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Q_DECL_EXPORT RelationType getType() const;
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Q_DECL_EXPORT void setType(const RelationType &value);
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Q_DECL_EXPORT QString getPropertyName() const;
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Q_DECL_EXPORT void setPropertyName(const QString &value);
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Q_DECL_EXPORT bool getOptional() const;
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Q_DECL_EXPORT void setOptional(bool value);
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Q_DECL_EXPORT QString getMappedBy() const;
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Q_DECL_EXPORT void setMappedBy(const QString &value);
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Q_DECL_EXPORT QList<CascadeType> getCascadeType() const;
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Q_DECL_EXPORT void setCascadeType(const QList<CascadeType> &value);
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protected:
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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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};
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inline bool operator==(const Relation &e1, const Relation &e2) {
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return e1.getPropertyName() == e2.getPropertyName();
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}
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inline uint qHash(const Relation &key, uint seed) {
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return qHash(key.getPropertyName(), seed);
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}
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}
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#endif // RELATION_H
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