src/DAL/KeyImpl.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2008 by Sverre Rabbelier                                *
   3  *   sverre@rabbelier.nl                                                   *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 3 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  19  ***************************************************************************/
  20
  21 #include "KeyImpl.h"
  22 #include "KeyValue.h"
  23
  24 KeyImpl::KeyImpl(TableImplPtr nativeTable, TableImplPtr foreignTable, cstring name, bool primary, bool lookup) :
  25 FieldImpl(nativeTable, name, false, lookup),
  26 m_foreignTable(foreignTable),
  27 m_primary(primary)
  28 {
  29         Assert(nativeTable);
  30         Assert(foreignTable);
  31 }
  32
  33 FieldValuePtr KeyImpl::newValue()
  34 {
  35         FieldImplPtr field = shared_from_this();
  36         KeyImplPtr thisptr = boost::static_pointer_cast<KeyImpl>(field);
  37         Assert(thisptr.get() == this);
  38
  39         KeyValuePtr result(new KeyValue(thisptr, 0));
  40         return result;
  41 }
  42
  43 TableImplPtr KeyImpl::getForeignTable() const
  44 {
  45         return m_foreignTable;
  46 }
  47
  48 bool KeyImpl::isForeignKey() const
  49 {
  50         return getForeignTable() != getTable();
  51 }