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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 CACHE_H
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#define CACHE_H
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#include <QHash>
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#include <QWeakPointer>
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#include <QMutex>
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#include <QSharedPointer>
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#include "entityinstancefactory.h"
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#include "entity.h"
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#include "entityhelper.h"
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namespace CuteEntityManager {
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class Entity;
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class Cache {
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public:
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Cache();
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QHash<QString, QWeakPointer<Entity> > getCache() const;
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bool contains(qint64 id, const QString &classname);
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bool contains(const QString &key);
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template<class T> bool contains(qint64 id) {
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bool ok = false;
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Entity *e = EntityInstanceFactory::createInstance<T>();
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if (e) {
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ok = this->contains(id, QString(EntityHelper::getClassname(e)));
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delete e;
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}
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return ok;
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}
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void clear();
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void insert(QSharedPointer<Entity> &entity);
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void remove(const QSharedPointer<Entity> &entity);
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void remove(const qint64 &id, const QString &classname);
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template<class T> void remove(qint64 id) {
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Entity *e = EntityInstanceFactory::createInstance<T>();
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if (e) {
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this->remove(id, QString(EntityHelper::getClassname(e)));
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delete e;
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}
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}
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QSharedPointer<Entity> get(qint64 id, const QString &classname);
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template<class T> QSharedPointer<Entity> get(qint64 id) {
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Entity *e = EntityInstanceFactory::createInstance<T>();
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if (e) {
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auto r = this->get(id, QString(EntityHelper::getClassname(e)));
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delete e;
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return r;
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}
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return QSharedPointer<Entity>();
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}
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protected:
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QString generateKey(qint64 id, const QString &classname) const;
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private:
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QHash<QString, QWeakPointer<Entity>> cache;
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QMutex mutex;
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};
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}
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#endif // CACHE_H
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