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/*
* Copyright (C) 2014 Christian Mollekopf <chrigi_1@fastmail.fm>
*
* This library 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; either
* version 2.1 of the License, or (at your option) version 3, or any
* later version accepted by the membership of KDE e.V. (or its
* successor approved by the membership of KDE e.V.), which shall
* act as a proxy defined in Section 6 of version 3 of the license.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <sinkcommon_export.h>
#include <QByteArray>
#include <QDebug>
#include <QMutex>
#include <functional>
#include <memory>
#include "facadeinterface.h"
#include "applicationdomaintype.h"
#include "log.h"
namespace Sink {
/**
* Facade factory that returns a store facade implementation, by loading a plugin and providing the relevant implementation.
*
* If we were to provide default implementations for certain capabilities. Here would be the place to do so.
*/
class SINKCOMMON_EXPORT FacadeFactory {
public:
typedef std::function<std::shared_ptr<void>(const QByteArray &)> FactoryFunction;
void registerStaticFacades();
static FacadeFactory &instance();
static QByteArray key(const QByteArray &resource, const QByteArray &type);
template<class DomainType, class Facade>
void registerFacade(const QByteArray &resource)
{
registerFacade(resource, [](const QByteArray &instanceIdentifier){ return std::make_shared<Facade>(instanceIdentifier); }, ApplicationDomain::getTypeName<DomainType>());
}
/*
* Allows the registrar to register a specific instance.
*
* Primarily for testing.
*/
template<class DomainType, class Facade>
void registerFacade(const QByteArray &resource, const FactoryFunction &customFactoryFunction)
{
registerFacade(resource, customFactoryFunction, ApplicationDomain::getTypeName<DomainType>());
}
/*
* Can be used to clear the factory.
*
* Primarily for testing.
*/
void resetFactory();
template<class DomainType>
std::shared_ptr<StoreFacade<DomainType> > getFacade(const QByteArray &resource, const QByteArray &instanceIdentifier)
{
const QByteArray typeName = ApplicationDomain::getTypeName<DomainType>();
return std::static_pointer_cast<StoreFacade<DomainType> >(getFacade(resource, instanceIdentifier, typeName));
}
private:
FacadeFactory();
std::shared_ptr<void> getFacade(const QByteArray &resource, const QByteArray &instanceIdentifier, const QByteArray &typeName);
void registerFacade(const QByteArray &resource, const FactoryFunction &customFactoryFunction, const QByteArray typeName);
QHash<QByteArray, FactoryFunction> mFacadeRegistry;
static QMutex sMutex;
};
}
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