Tile cache versioning for Nokia maps

Added to avoid mixing of different map versions in map view.

Generic cache versioning by adding an incremental version number to
tile specs and filenames. Default version -1 falls back to not using
version in file names for backward compatibility.

Nokia specific version management by implementing the version request,
comparing all version information and increment the version if anything
has changed.

Task-number: QTBUG-25559
Change-Id: I6820f2efbe7458701475cc833d3077022797b2df
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>

1 files changed, 75 insertions, 0 deletions

diff --git a/src/plugins/geoservices/nokia/qgeomapversion.h b/src/plugins/geoservices/nokia/qgeomapversion.h
new file mode 100644
index 00000000..18a9f3a7
--- /dev/null
+++ b/src/plugins/geoservices/nokia/qgeomapversion.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Appello Systems AB.
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtLocation module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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, Digia gives you certain additional
+** rights.  These rights are described in the Digia 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.
+**
+**
+** $QT_END_LICENSE$
+**
+** This file is part of the Nokia services plugin for the Maps and
+** Navigation API.  The use of these services, whether by use of the
+** plugin or by other means, is governed by the terms and conditions
+** described by the file NOKIA_TERMS_AND_CONDITIONS.txt in
+** this package, located in the directory containing the Nokia services
+** plugin source code.
+**
+****************************************************************************/
+
+#ifndef QGEOMAPVERSION_H
+#define QGEOMAPVERSION_H
+
+#include <QByteArray>
+#include <QJsonObject>
+
+QT_BEGIN_NAMESPACE
+
+class QGeoMapVersion
+{
+
+public:
+    QGeoMapVersion();
+    bool isNewVersion(const QJsonObject &newVersionData);
+    int version() const;
+    void setVersion(const int);
+    void setVersionData(const QJsonObject &versionData);
+    QByteArray toJson() const;
+
+private:
+    int m_version;
+    QJsonObject m_versionData;
+};
+
+QT_END_NAMESPACE
+
+#endif // QGEOMAPVERSION_H