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diff --git a/include/connectivity/TColumnsHelper.hxx b/include/connectivity/TColumnsHelper.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 .
+ */
+
+#ifndef INCLUDED_CONNECTIVITY_TCOLUMNSHELPER_HXX
+#define INCLUDED_CONNECTIVITY_TCOLUMNSHELPER_HXX
+
+#include <memory>
+#include <connectivity/sdbcx/VCollection.hxx>
+#include <connectivity/dbtoolsdllapi.hxx>
+
+namespace connectivity
+{
+    class OTableHelper;
+    class OColumnsHelperImpl;
+    /** contains general column handling to create default columns and default sql statements.
+    */
+    class OOO_DLLPUBLIC_DBTOOLS OColumnsHelper : public sdbcx::OCollection
+    {
+        std::unique_ptr<OColumnsHelperImpl> m_pImpl;
+    protected:
+        OTableHelper*   m_pTable;
+
+        virtual sdbcx::ObjectType createObject(const OUString& _rName) override;
+        virtual void impl_refresh() override;
+        virtual css::uno::Reference< css::beans::XPropertySet > createDescriptor() override;
+        virtual sdbcx::ObjectType appendObject( const OUString& _rForName, const css::uno::Reference< css::beans::XPropertySet >& descriptor ) override;
+        virtual void dropObject(sal_Int32 _nPos, const OUString& _sElementName) override;
+    public:
+        OColumnsHelper( ::cppu::OWeakObject& _rParent
+                        ,bool _bCase
+                        ,::osl::Mutex& _rMutex
+                        ,const ::std::vector< OUString> &_rVector
+                        ,bool _bUseHardRef
+                    );
+        virtual ~OColumnsHelper() override;
+
+        /** set the parent of the columns. Can also be <NULL/>.
+            @param  _pTable
+                The parent.
+        */
+        void setParent(OTableHelper* _pTable) { m_pTable = _pTable;}
+    };
+}
+#endif // INCLUDED_CONNECTIVITY_TCOLUMNSHELPER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */