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diff --git a/dbaccess/source/ui/inc/TableConnectionData.hxx b/dbaccess/source/ui/inc/TableConnectionData.hxx
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+++ b/dbaccess/source/ui/inc/TableConnectionData.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 "ConnectionLineData.hxx"
+#include "TableWindowData.hxx"
+#include <vector>
+#include <memory>
+
+namespace dbaui
+{
+    //===========================================//
+    // ConnData     ---------->*    ConnLineData //
+    //    ^1                            ^1       //
+    //    |                             |        //
+    //  Conn        ---------->*    ConnLine     //
+    //===========================================//
+
+    /** Contains all connection data which exists between two windows */
+    class OTableConnectionData
+    {
+    protected:
+        TTableWindowData::value_type m_pReferencingTable;
+        TTableWindowData::value_type m_pReferencedTable;
+        OUString m_aConnName;
+
+        OConnectionLineDataVec m_vConnLineData;
+
+        void    Init();
+
+        OTableConnectionData& operator=( const OTableConnectionData& rConnData );
+    public:
+        OTableConnectionData();
+        OTableConnectionData( const TTableWindowData::value_type& _pReferencingTable,
+                              const TTableWindowData::value_type& _pReferencedTable );
+        OTableConnectionData( const OTableConnectionData& rConnData );
+        virtual ~OTableConnectionData();
+
+        /// initialise from a source (more comfortable than a virtual assignment operator)
+        virtual void CopyFrom(const OTableConnectionData& rSource);
+
+        /** deliver a new instance of my own type
+
+            derived classes have to deliver an instance of their own type
+
+            @note does NOT have to be initialised
+         */
+        virtual std::shared_ptr<OTableConnectionData> NewInstance() const;
+
+        void SetConnLine( sal_uInt16 nIndex, const OUString& rSourceFieldName, const OUString& rDestFieldName );
+        bool AppendConnLine( const OUString& rSourceFieldName, const OUString& rDestFieldName );
+        /** Deletes list of ConnLines
+        */
+        void ResetConnLines();
+
+        /** moves the empty lines to the back
+            removes duplicated empty lines
+
+            caller is responsible for repainting them
+
+            @return index of first changed line, or one-past-the-end if no change
+         */
+        OConnectionLineDataVec::size_type normalizeLines();
+
+        const OConnectionLineDataVec& GetConnLineDataList() const { return m_vConnLineData; }
+        OConnectionLineDataVec& GetConnLineDataList() { return m_vConnLineData; }
+
+        const TTableWindowData::value_type& getReferencingTable() const { return m_pReferencingTable; }
+        const TTableWindowData::value_type& getReferencedTable()  const { return m_pReferencedTable;  }
+
+        void setReferencingTable(const TTableWindowData::value_type& _pTable) { m_pReferencingTable = _pTable; }
+        void setReferencedTable(const TTableWindowData::value_type& _pTable)  { m_pReferencedTable  = _pTable; }
+
+        /** Update create a new connection
+
+            @return true if successful
+        */
+        virtual bool Update(){ return true; }
+    };
+
+    typedef std::vector< std::shared_ptr<OTableConnectionData> >  TTableConnectionData;
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */