1 files changed, 59 insertions, 0 deletions

diff --git a/common/datastorequery.h b/common/datastorequery.h
new file mode 100644
index 0000000..cf9d9e2
--- /dev/null
+++ b/common/datastorequery.h
@@ -0,0 +1,59 @@
+/*
+ *   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;
+};
+
+
+
+