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diff --git a/connectivity/source/simpledbt/refbase.hxx b/connectivity/source/simpledbt/refbase.hxx
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+++ b/connectivity/source/simpledbt/refbase.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef CONNECTIVITY_DBTOOLS_REFBASE_HXX
+#define CONNECTIVITY_DBTOOLS_REFBASE_HXX
+
+#include <rtl/ref.hxx>
+
+//........................................................................
+namespace connectivity
+{
+//........................................................................
+
+    //================================================================
+    //= ORefBase
+    //================================================================
+    /// base class for all objects implementing the ::rtl::IReference interface
+    class ORefBase : public ::rtl::IReference
+    {
+    protected:
+        oslInterlockedCount     m_refCount;
+
+    protected:
+        ORefBase() : m_refCount(0) { }
+        virtual ~ORefBase();
+
+        virtual oslInterlockedCount SAL_CALL acquire();
+        virtual oslInterlockedCount SAL_CALL release();
+    };
+
+//........................................................................
+}   // namespace connectivity
+//........................................................................
+
+#endif // CONNECTIVITY_DBTOOLS_REFBASE_HXX
+
+