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/*
* Copyright (C) 2014 Aaron Seigo <aseigo@kde.org>
* Copyright (C) 2015 Christian Mollekopf <mollekopf@kolabsys.com>
*
* 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 <flatbuffers/flatbuffers.h>
#include <QSharedDataPointer>
#include <QObject>
#include "sink_export.h"
#include <storage.h>
#include <Async/Async>
#include "domainadaptor.h"
namespace Sink {
class Preprocessor;
class SINK_EXPORT Pipeline : public QObject
{
Q_OBJECT
public:
Pipeline(const ResourceContext &context);
~Pipeline();
Storage::DataStore &storage() const;
void setPreprocessors(const QString &entityType, const QVector<Preprocessor *> &preprocessors);
void startTransaction();
void commit();
Storage::DataStore::Transaction &transaction();
KAsync::Job<qint64> newEntity(void const *command, size_t size);
KAsync::Job<qint64> modifiedEntity(void const *command, size_t size);
KAsync::Job<qint64> deletedEntity(void const *command, size_t size);
/*
* Cleans up a single revision.
*
* This has to be called for every revision in consecutive order.
*/
void cleanupRevision(qint64 revision);
/*
* Returns the latest cleaned up revision.
*/
qint64 cleanedUpRevision();
signals:
void revisionUpdated(qint64);
private:
class Private;
const std::unique_ptr<Private> d;
};
class SINK_EXPORT Preprocessor
{
public:
Preprocessor();
virtual ~Preprocessor();
virtual void startBatch();
virtual void newEntity(const QByteArray &uid, qint64 revision, ApplicationDomain::BufferAdaptor &newEntity, Storage::DataStore::Transaction &transaction) {};
virtual void modifiedEntity(const QByteArray &uid, qint64 revision, const ApplicationDomain::BufferAdaptor &oldEntity,
ApplicationDomain::BufferAdaptor &newEntity, Storage::DataStore::Transaction &transaction) {};
virtual void deletedEntity(const QByteArray &uid, qint64 revision, const ApplicationDomain::BufferAdaptor &oldEntity, Storage::DataStore::Transaction &transaction) {};
virtual void finalize();
void setup(const QByteArray &resourceType, const QByteArray &resourceInstanceIdentifier, Pipeline *);
protected:
template <typename DomainType>
void createEntity(const DomainType &entity)
{
createEntity(entity, ApplicationDomain::getTypeName<DomainType>());
}
void createEntity(const ApplicationDomain::ApplicationDomainType &entity, const QByteArray &type);
QByteArray resourceInstanceIdentifier() const;
private:
friend class Pipeline;
class Private;
const std::unique_ptr<Private> d;
};
template<typename DomainType>
class SINK_EXPORT EntityPreprocessor: public Preprocessor
{
public:
virtual void newEntity(DomainType &, Storage::DataStore::Transaction &transaction) {};
virtual void modifiedEntity(const DomainType &oldEntity, DomainType &newEntity, Storage::DataStore::Transaction &transaction) {};
virtual void deletedEntity(const DomainType &oldEntity, Storage::DataStore::Transaction &transaction) {};
private:
static void nullDeleter(ApplicationDomain::BufferAdaptor *) {}
virtual void newEntity(const QByteArray &uid, qint64 revision, ApplicationDomain::BufferAdaptor &bufferAdaptor, Storage::DataStore::Transaction &transaction) Q_DECL_OVERRIDE
{
auto o = DomainType("", uid, revision, QSharedPointer<ApplicationDomain::BufferAdaptor>(&bufferAdaptor, nullDeleter));
newEntity(o, transaction);
}
virtual void modifiedEntity(const QByteArray &uid, qint64 revision, const ApplicationDomain::BufferAdaptor &oldEntity,
ApplicationDomain::BufferAdaptor &bufferAdaptor, Storage::DataStore::Transaction &transaction) Q_DECL_OVERRIDE
{
auto o = DomainType("", uid, revision, QSharedPointer<ApplicationDomain::BufferAdaptor>(&bufferAdaptor, nullDeleter));
modifiedEntity(DomainType("", uid, 0, QSharedPointer<ApplicationDomain::BufferAdaptor>(const_cast<ApplicationDomain::BufferAdaptor*>(&oldEntity), nullDeleter)), o, transaction);
}
virtual void deletedEntity(const QByteArray &uid, qint64 revision, const ApplicationDomain::BufferAdaptor &bufferAdaptor, Storage::DataStore::Transaction &transaction) Q_DECL_OVERRIDE
{
deletedEntity(DomainType("", uid, revision, QSharedPointer<ApplicationDomain::BufferAdaptor>(const_cast<ApplicationDomain::BufferAdaptor*>(&bufferAdaptor), nullDeleter)), transaction);
}
};
} // namespace Sink
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