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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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#include "cache.h"
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#include "entityhelper.h"
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using namespace CuteEntityManager;
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Cache::Cache() {
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}
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QHash<QString, QWeakPointer<Entity> > Cache::getCache() const {
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return cache;
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}
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bool Cache::contains(qint64 id, const QString &classname) {
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QString key = this->generateKey(id, classname);
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return this->contains(key);
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}
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bool Cache::contains(const QString &key) {
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if (!key.isEmpty()) {
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return this->cache.contains(key);
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}
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return false;
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}
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void Cache::insert(QSharedPointer<Entity> &entity) {
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if (entity && entity->getId() > -1) {
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QString key = this->generateKey(entity->getId(),
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EntityHelper::getClassName(entity.data()));
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if (this->cache.contains(key)) {
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QSharedPointer<Entity> ptr = this->cache.value(key).toStrongRef();
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if (ptr) {
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ptr.swap(entity);
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return;
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}
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}
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this->cache.insert(key, entity.toWeakRef());
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}
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}
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void Cache::remove(const QSharedPointer<Entity> &entity) {
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if (entity.data() && entity->getId() > -1) {
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this->remove(entity->getId(), EntityHelper::getClassName(entity.data()));
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}
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}
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void Cache::remove(const qint64 &id, const QString &classname) {
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this->cache.remove(this->generateKey(id, classname));
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}
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QSharedPointer<Entity> Cache::get(qint64 id, const QString &classname) {
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QString key = this->generateKey(id, classname);
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if (this->contains(key)) {
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QSharedPointer<Entity> ptr = this->cache.value(key).toStrongRef();
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if (!ptr) {
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this->remove(id, classname);
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}
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return ptr;
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}
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return QSharedPointer<Entity>();
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}
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QString Cache::generateKey(qint64 id, const QString &classname) const {
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if (id > -1) {
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return QString::number(id).append("[").append(classname).append("]");
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}
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return QString("");
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}
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