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diff --git a/connectivity/source/inc/calc/CConnection.hxx b/connectivity/source/inc/calc/CConnection.hxx
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+++ b/connectivity/source/inc/calc/CConnection.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_CALC_CONNECTION_HXX_
+#define _CONNECTIVITY_CALC_CONNECTION_HXX_
+
+#include "file/FConnection.hxx"
+
+namespace com { namespace sun { namespace star { namespace sheet {
+    class XSpreadsheetDocument;
+} } } }
+
+
+namespace connectivity
+{
+    namespace calc
+    {
+        class ODriver;
+        class OCalcConnection : public file::OConnection
+        {
+            // the spreadsheet document:
+            ::com::sun::star::uno::Reference< ::com::sun::star::sheet::XSpreadsheetDocument > m_xDoc;
+            ::rtl::OUString     m_sPassword;
+            String              m_aFileName;
+            oslInterlockedCount m_nDocCount;
+
+        public:
+            OCalcConnection(ODriver* _pDriver);
+            virtual ~OCalcConnection();
+
+            virtual void construct(const ::rtl::OUString& _rUrl,
+                const ::com::sun::star::uno::Sequence< ::com::sun::star::beans::PropertyValue >& _rInfo )
+                throw( ::com::sun::star::sdbc::SQLException);
+
+            // XServiceInfo
+            DECLARE_SERVICE_INFO();
+
+            // OComponentHelper
+            virtual void SAL_CALL disposing(void);
+
+            // XConnection
+            virtual ::com::sun::star::uno::Reference< ::com::sun::star::sdbc::XDatabaseMetaData > SAL_CALL getMetaData(  ) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
+            virtual ::com::sun::star::uno::Reference< ::com::sun::star::sdbcx::XTablesSupplier > createCatalog();
+            virtual ::com::sun::star::uno::Reference< ::com::sun::star::sdbc::XStatement > SAL_CALL createStatement(  ) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
+            virtual ::com::sun::star::uno::Reference< ::com::sun::star::sdbc::XPreparedStatement > SAL_CALL prepareStatement( const ::rtl::OUString& sql ) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
+            virtual ::com::sun::star::uno::Reference< ::com::sun::star::sdbc::XPreparedStatement > SAL_CALL prepareCall( const ::rtl::OUString& sql ) throw(::com::sun::star::sdbc::SQLException, ::com::sun::star::uno::RuntimeException);
+
+            // no interface methods
+            ::com::sun::star::uno::Reference< ::com::sun::star::sheet::XSpreadsheetDocument> acquireDoc();
+            void releaseDoc();
+
+            class ODocHolder
+            {
+                OCalcConnection* m_pConnection;
+                ::com::sun::star::uno::Reference< ::com::sun::star::sheet::XSpreadsheetDocument> m_xDoc;
+            public:
+                ODocHolder(OCalcConnection* _pConnection) : m_pConnection(_pConnection)
+                {
+                    m_xDoc = m_pConnection->acquireDoc();
+                }
+                ~ODocHolder()
+                {
+                   m_xDoc.clear();
+                    m_pConnection->releaseDoc();
+                }
+                ::com::sun::star::uno::Reference< ::com::sun::star::sheet::XSpreadsheetDocument> getDoc() const { return m_xDoc; }
+            };
+        };
+    }
+}
+
+#endif // _CONNECTIVITY_CALC_CONNECTION_HXX_
+