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diff --git a/dbaccess/source/ui/querydesign/QTableConnection.cxx b/dbaccess/source/ui/querydesign/QTableConnection.cxx
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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 .
+ */
+
+#include "QTableConnection.hxx"
+#include <osl/diagnose.h>
+#include <QueryTableView.hxx>
+
+using namespace dbaui;
+
+OQueryTableConnection::OQueryTableConnection(OQueryTableView* pContainer, const TTableConnectionData::value_type& pTabConnData)
+ : OTableConnection(pContainer, pTabConnData)
+ , m_bVisited(false)
+{
+}
+
+OQueryTableConnection::OQueryTableConnection(const OQueryTableConnection& rConn)
+ : VclReferenceBase(),
+ OTableConnection( rConn )
+ , m_bVisited(false)
+{
+ // no own members, so base class functionality is sufficient
+}
+
+OQueryTableConnection& OQueryTableConnection::operator=(const OQueryTableConnection& rConn)
+{
+ if (&rConn == this)
+ return *this;
+
+ OTableConnection::operator=(rConn);
+ // no own members ...
+ return *this;
+}
+
+bool OQueryTableConnection::operator==(const OQueryTableConnection& rCompare) const
+{
+ OSL_ENSURE(GetData() && rCompare.GetData(), "OQueryTableConnection::operator== : one of the two participants has no data!");
+
+ // I don't have to compare all too much (especially not all the members) : merely the windows, which we are connected to, and the indices in the corresponding table have to match.
+ OQueryTableConnectionData* pMyData = static_cast<OQueryTableConnectionData*>(GetData().get());
+ OQueryTableConnectionData* pCompData = static_cast<OQueryTableConnectionData*>(rCompare.GetData().get());
+
+ // Connections are seen as equal, if source and destination window names and source and destination field Indices match...
+ return ( ( (pMyData->getReferencedTable() == pCompData->getReferencedTable()) &&
+ (pMyData->getReferencingTable() == pCompData->getReferencingTable()) &&
+ (pMyData->GetFieldIndex(JTCS_TO) == pCompData->GetFieldIndex(JTCS_TO)) &&
+ (pMyData->GetFieldIndex(JTCS_FROM) == pCompData->GetFieldIndex(JTCS_FROM))
+ )
+ || // ... or this cross matching is given
+ ( (pMyData->getReferencingTable() == pCompData->getReferencedTable()) &&
+ (pMyData->getReferencedTable() == pCompData->getReferencingTable()) &&
+ (pMyData->GetFieldIndex(JTCS_TO) == pCompData->GetFieldIndex(JTCS_FROM)) &&
+ (pMyData->GetFieldIndex(JTCS_FROM) == pCompData->GetFieldIndex(JTCS_TO))
+ )
+ );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */