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/*
* Copyright (C) 2016 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 "query.h"
#include "storage.h"
#include "resultset.h"
#include "typeindex.h"
#include "query.h"
#include "entitybuffer.h"
class DataStoreQuery {
public:
DataStoreQuery(const Sink::Query &query, const QByteArray &type, Sink::Storage::Transaction &transaction, TypeIndex &typeIndex, std::function<QVariant(const Sink::Entity &entity, const QByteArray &property)> getProperty);
ResultSet execute();
ResultSet update(qint64 baseRevision);
private:
typedef std::function<bool(const QByteArray &uid, const Sink::EntityBuffer &entityBuffer)> FilterFunction;
typedef std::function<void(const QByteArray &uid, const Sink::EntityBuffer &entityBuffer)> BufferCallback;
QVariant getProperty(const Sink::Entity &entity, const QByteArray &property);
void readEntity(const QByteArray &key, const BufferCallback &resultCallback);
ResultSet loadInitialResultSet(QSet<QByteArray> &remainingFilters, QByteArray &remainingSorting);
ResultSet loadIncrementalResultSet(qint64 baseRevision, QSet<QByteArray> &remainingFilters);
ResultSet filterAndSortSet(ResultSet &resultSet, const FilterFunction &filter, bool initialQuery, const QByteArray &sortProperty);
FilterFunction getFilter(const QSet<QByteArray> &remainingFilters);
Sink::Query mQuery;
Sink::Storage::Transaction &mTransaction;
const QByteArray mType;
TypeIndex &mTypeIndex;
Sink::Storage::NamedDatabase mDb;
std::function<QVariant(const Sink::Entity &entity, const QByteArray &property)> mGetProperty;
};
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