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/*
* Copyright (C) 2014 Christian Mollekopf <chrigi_1@fastmail.fm>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include "clientapi.h"
#include <QByteArray>
#include "domainadaptor.h"
#include "entitybuffer.h"
#include "log.h"
#include "storage.h"
#include "resultset.h"
/**
* Wraps storage, entity adaptor factory and indexes into one.
*/
class EntityStorageBase
{
protected:
EntityStorageBase(const QByteArray &instanceIdentifier, const DomainTypeAdaptorFactoryInterface::Ptr &adaptorFactory)
: mResourceInstanceIdentifier(instanceIdentifier),
mDomainTypeAdaptorFactory(adaptorFactory)
{
}
virtual Akonadi2::ApplicationDomain::ApplicationDomainType::Ptr create(const QByteArray &key, qint64 revision, const QSharedPointer<Akonadi2::ApplicationDomain::BufferAdaptor> &adaptor) = 0;
virtual Akonadi2::ApplicationDomain::ApplicationDomainType::Ptr copy(const Akonadi2::ApplicationDomain::ApplicationDomainType &) = 0;
virtual ResultSet queryIndexes(const Akonadi2::Query &query, const QByteArray &resourceInstanceIdentifier, QSet<QByteArray> &appliedFilters) = 0;
void readValue(const QSharedPointer<Akonadi2::Storage> &storage, const QByteArray &key, const std::function<void(const Akonadi2::ApplicationDomain::ApplicationDomainType::Ptr &)> &resultCallback);
ResultSet filteredSet(const ResultSet &resultSet, const std::function<bool(const Akonadi2::ApplicationDomain::ApplicationDomainType::Ptr &domainObject)> &filter, const QSharedPointer<Akonadi2::Storage> &storage, qint64 baseRevision, qint64 topRevision);
ResultSet getResultSet(const Akonadi2::Query &query, const QSharedPointer<Akonadi2::Storage> &storage, qint64 baseRevision, qint64 topRevision);
protected:
QByteArray mResourceInstanceIdentifier;
DomainTypeAdaptorFactoryInterface::Ptr mDomainTypeAdaptorFactory;
};
template<typename DomainType>
class EntityStorage : public EntityStorageBase
{
public:
EntityStorage(const QByteArray &instanceIdentifier, const DomainTypeAdaptorFactoryInterface::Ptr &adaptorFactory)
: EntityStorageBase(instanceIdentifier, adaptorFactory)
{
}
protected:
Akonadi2::ApplicationDomain::ApplicationDomainType::Ptr create(const QByteArray &key, qint64 revision, const QSharedPointer<Akonadi2::ApplicationDomain::BufferAdaptor> &adaptor) Q_DECL_OVERRIDE
{
return DomainType::Ptr::create(mResourceInstanceIdentifier, key, revision, adaptor);
}
Akonadi2::ApplicationDomain::ApplicationDomainType::Ptr copy(const Akonadi2::ApplicationDomain::ApplicationDomainType &object) Q_DECL_OVERRIDE
{
return Akonadi2::ApplicationDomain::ApplicationDomainType::getInMemoryRepresentation<DomainType>(object);
}
ResultSet queryIndexes(const Akonadi2::Query &query, const QByteArray &resourceInstanceIdentifier, QSet<QByteArray> &appliedFilters) Q_DECL_OVERRIDE
{
return Akonadi2::ApplicationDomain::TypeImplementation<DomainType>::queryIndexes(query, resourceInstanceIdentifier, appliedFilters);
}
public:
virtual void read(const Akonadi2::Query &query, const QPair<qint64, qint64> &revisionRange, const QSharedPointer<Akonadi2::ResultProvider<typename DomainType::Ptr> > &resultProvider)
{
auto storage = QSharedPointer<Akonadi2::Storage>::create(Akonadi2::Store::storageLocation(), mResourceInstanceIdentifier);
storage->setDefaultErrorHandler([](const Akonadi2::Storage::Error &error) {
Warning() << "Error during query: " << error.store << error.message;
});
storage->startTransaction(Akonadi2::Storage::ReadOnly);
//TODO start transaction on indexes as well
Log() << "Querying" << revisionRange.first << revisionRange.second;
auto resultSet = getResultSet(query, storage, revisionRange.first, revisionRange.second);
while(resultSet.next([this, resultProvider](const Akonadi2::ApplicationDomain::ApplicationDomainType::Ptr &value) -> bool {
auto cloned = copy(*value);
resultProvider->add(cloned.template staticCast<DomainType>());
return true;
})){};
//TODO replay removals and modifications
storage->abortTransaction();
}
};
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