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diff --git a/src/partition/jsondbstat.h b/src/partition/jsondbstat.h
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+/****************************************************************************
+**
+** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/
+**
+** This file is part of the QtAddOn.JsonDb module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef JSONDB_STAT_H
+#define JSONDB_STAT_H
+
+#include "jsondbpartitionglobal.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE_JSONDB_PARTITION
+
+class Q_JSONDB_PARTITION_EXPORT JsonDbStat
+{
+public:
+    qint32 reads;
+    qint32 hits;
+    qint32 writes;
+    JsonDbStat() : reads(0), hits(0), writes(0) {};
+    JsonDbStat(qint32 reads, qint32 hits, qint32 writes) : reads(reads), hits(hits), writes(writes) {};
+    JsonDbStat &operator += (const JsonDbStat &o)
+    {
+        reads += o.reads;
+        hits += o.hits;
+        writes += o.writes;
+        return *this;
+    };
+    JsonDbStat &operator -= (const JsonDbStat &o)
+    {
+        reads = qMax((qint32)0, reads - o.reads);
+        hits = qMax((qint32)0, hits - o.hits);
+        writes = qMax((qint32)0, writes - o.writes);
+        return *this;
+    };
+};
+
+QT_END_NAMESPACE_JSONDB_PARTITION
+
+QT_END_HEADER
+
+#endif // JSONDB_STAT_H