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diff --git a/src/libs/installer/genericdatacache.h b/src/libs/installer/genericdatacache.h
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+++ b/src/libs/installer/genericdatacache.h
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+/**************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Installer Framework.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+
+#ifndef GENERICDATACACHE_H
+#define GENERICDATACACHE_H
+
+#include "installer_global.h"
+#include "lockfile.h"
+
+#include <QHash>
+#include <QMutex>
+#include <QScopedPointer>
+
+namespace QInstaller {
+
+class INSTALLER_EXPORT CacheableItem
+{
+public:
+    CacheableItem() = default;
+    explicit CacheableItem(const QString &path)
+        : m_path(path)
+    {}
+    virtual ~CacheableItem() = 0;
+
+    virtual QString path() const { return m_path; }
+    virtual void setPath(const QString &path) { m_path = path; }
+
+    virtual QByteArray checksum() const = 0;
+    virtual bool isValid() const = 0;
+
+    virtual bool isActive() const = 0;
+    virtual bool obsoletes(CacheableItem *other) = 0;
+
+private:
+    QString m_path;
+};
+
+template <typename T>
+class INSTALLER_EXPORT GenericDataCache
+{
+public:
+    enum RegisterMode {
+        Copy = 0,
+        Move = 1
+    };
+
+    GenericDataCache();
+    explicit GenericDataCache(const QString &path, const QString &type, const QString &version);
+    virtual ~GenericDataCache();
+
+    void setType(const QString &type);
+    void setVersion(const QString &version);
+
+    bool initialize();
+    bool clear();
+    bool sync();
+
+    bool isValid() const;
+    QString errorString() const;
+
+    QString path() const;
+    void setPath(const QString &path);
+
+    QList<T *> items() const;
+    T *itemByChecksum(const QByteArray &checksum) const;
+    T *itemByPath(const QString &path) const;
+
+    bool registerItem(T *item, bool replace = false, RegisterMode mode = Copy);
+    bool removeItem(const QByteArray &checksum);
+
+    QList<T *> obsoleteItems() const;
+
+private:
+    void invalidate();
+    void setErrorString(const QString &error) const;
+
+    bool fromDisk();
+    bool toDisk();
+
+    bool remove(const QByteArray &checksum);
+
+private:
+    QScopedPointer<KDUpdater::LockFile> m_lock;
+    mutable QMutex m_mutex;
+
+    QHash<QByteArray, T *> m_items;
+    QString m_path;
+    QString m_type;
+    QString m_version;
+    mutable QString m_error;
+
+    bool m_invalidated;
+};
+
+} // namespace QInstaller
+
+#endif // GENERICDATACACHE_H