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diff --git a/connectivity/source/inc/OSubComponent.hxx b/connectivity/source/inc/OSubComponent.hxx
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+++ b/connectivity/source/inc/OSubComponent.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*************************************************************************
+ *
+ * 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_OSUBCOMPONENT_HXX_
+#define _CONNECTIVITY_OSUBCOMPONENT_HXX_
+
+#include <cppuhelper/weak.hxx>
+#include <cppuhelper/interfacecontainer.h>
+#include "connectivity/dbtoolsdllapi.hxx"
+
+namespace com
+{
+    namespace sun
+    {
+        namespace star
+        {
+            namespace lang
+            {
+                class XComponent;
+            }
+        }
+    }
+}
+namespace connectivity
+{
+    OOO_DLLPUBLIC_DBTOOLS
+    void release(oslInterlockedCount& _refCount,
+                 ::cppu::OBroadcastHelper& rBHelper,
+                 ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& _xInterface,
+                 ::com::sun::star::lang::XComponent* _pObject);
+    //************************************************************
+    // OSubComponent
+    //************************************************************
+    template <class SELF, class WEAK> class OSubComponent
+    {
+    protected:
+        // the parent must support the tunnel implementation
+        ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > m_xParent;
+        SELF*   m_pDerivedImplementation;
+
+    public:
+        OSubComponent(
+                const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& _xParent,
+                SELF* _pDerivedImplementation)
+            :m_xParent(_xParent)
+            ,m_pDerivedImplementation(_pDerivedImplementation)
+        {
+        }
+
+    protected:
+        void dispose_ChildImpl()
+        {
+            // avoid ambiguity
+            ::osl::MutexGuard aGuard( m_pDerivedImplementation->WEAK::rBHelper.rMutex );
+        m_xParent.clear();
+        }
+        void relase_ChildImpl()
+        {
+            ::connectivity::release(m_pDerivedImplementation->m_refCount,
+                                    m_pDerivedImplementation->WEAK::rBHelper,
+                                    m_xParent,
+                                    m_pDerivedImplementation);
+
+            m_pDerivedImplementation->WEAK::release();
+        }
+    };
+}
+#endif // _CONNECTIVITY_OSUBCOMPONENT_HXX_
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */