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diff --git a/filter/source/config/cache/querytokenizer.hxx b/filter/source/config/cache/querytokenizer.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <rtl/ustring.hxx>
+#include <unordered_map>
+
+
+namespace filter::config {
+
+
+/** @short      It can be used to split any query string (which can be used at the
+                related interface <type scope="css::container">XContainerQuery</type>)
+                into its different tokens using a fix schema.
+
+    @descr      All queries implemented of the services
+                <ul>
+                    <li><type scope="css::document">TypeDetection</type></li>
+                    <li><type scope="css::document">FilterFactory</type></li>
+                    <li><type scope="css::document">ExtendedTypeDetectionFactory</type></li>
+                    <li><type scope="css::frame">FrameLoaderFactory</type></li>
+                    <li><type scope="css::frame">ContentHandlerFactory</type></li>
+                </ul>
+                uses this schema.
+
+    @attention  This class is not threadsafe implemented. Because it's not necessary.
+                But you have to make sure that it's not used as such :-)
+ */
+class QueryTokenizer : public std::unordered_map< OUString, OUString >
+{
+
+    // member
+
+    private:
+
+        /** @short  Because the given query can contain errors,
+                    it should be checked outside.
+
+            TODO    May it's a good idea to describe the real problem
+                    more detailed ...
+         */
+        bool m_bValid;
+
+
+    // interface
+
+    public:
+
+        /** @short  create a new tokenizer instance with a
+                    a new query.
+
+            @descr  The given query is immediately analyzed
+                    and separated into its token, which can
+                    be access by some specialized method later.
+
+            @param  sQuery
+                    the query string.
+         */
+        explicit QueryTokenizer(std::u16string_view sQuery);
+
+
+        /** @short  destruct an instance of this class.
+         */
+        virtual ~QueryTokenizer();
+
+
+        /** @short  can be used to check if analyzing of given query
+                    was successful or not.
+         */
+        bool valid() const;
+};
+
+} // namespace filter::config
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */