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       1                 :            : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2                 :            : /*
       3                 :            :  * This file is part of the LibreOffice project.
       4                 :            :  *
       5                 :            :  * This Source Code Form is subject to the terms of the Mozilla Public
       6                 :            :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7                 :            :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8                 :            :  *
       9                 :            :  * This file incorporates work covered by the following license notice:
      10                 :            :  *
      11                 :            :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12                 :            :  *   contributor license agreements. See the NOTICE file distributed
      13                 :            :  *   with this work for additional information regarding copyright
      14                 :            :  *   ownership. The ASF licenses this file to you under the Apache
      15                 :            :  *   License, Version 2.0 (the "License"); you may not use this file
      16                 :            :  *   except in compliance with the License. You may obtain a copy of
      17                 :            :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18                 :            :  */
      19                 :            : #ifndef CONNECTIVITY_SKIPDELETEDSSET_HXX
      20                 :            : #define CONNECTIVITY_SKIPDELETEDSSET_HXX
      21                 :            : 
      22                 :            : #include "TResultSetHelper.hxx"
      23                 :            : #include <rtl/alloc.h>
      24                 :            : #include <boost/unordered_map.hpp>
      25                 :            : #include <vector>
      26                 :            : #include "connectivity/dbtoolsdllapi.hxx"
      27                 :            : 
      28                 :            : namespace connectivity
      29                 :            : {
      30                 :            :     /**
      31                 :            :         the class OSkipDeletedSet supports a general method to skip deleted rows
      32                 :            :     */
      33                 :            :     class OOO_DLLPUBLIC_DBTOOLS OSkipDeletedSet
      34                 :            :     {
      35                 :            :         ::std::vector<sal_Int32>                m_aBookmarksPositions;// vector of iterators to position map, the order is the logical position
      36                 :            :         IResultSetHelper*                       m_pHelper;            // used for moving in the resultset
      37                 :            :         bool                                    m_bDeletedVisible;
      38                 :            : 
      39                 :            :         sal_Bool    moveAbsolute(sal_Int32 _nOffset,sal_Bool _bRetrieveData);
      40                 :            :     public:
      41                 :            :         OSkipDeletedSet(IResultSetHelper* _pHelper);
      42                 :            :         ~OSkipDeletedSet();
      43                 :            : 
      44                 :          0 :         inline static void * SAL_CALL operator new( size_t nSize ) SAL_THROW(())
      45                 :          0 :             { return ::rtl_allocateMemory( nSize ); }
      46                 :            :         inline static void * SAL_CALL operator new( size_t,void* _pHint ) SAL_THROW(())
      47                 :            :             { return _pHint; }
      48                 :          0 :         inline static void SAL_CALL operator delete( void * pMem ) SAL_THROW(())
      49                 :          0 :             { ::rtl_freeMemory( pMem ); }
      50                 :            :         inline static void SAL_CALL operator delete( void *,void* ) SAL_THROW(())
      51                 :            :             {  }
      52                 :            : 
      53                 :            :         /**
      54                 :            :             skipDeleted moves the resultset to the position defined by the parameters
      55                 :            :             it garantees that the row isn't deleted
      56                 :            :                 @param
      57                 :            :                     IResultSetHelper::Movement  _eCursorPosition        in which direction the resultset should be moved
      58                 :            :                     sal_Int32                   _nOffset                the position relativ to the movement
      59                 :            :                     sal_Bool                    _bRetrieveData          is true when the current row should be filled which data
      60                 :            :                 @return
      61                 :            :                     true when the movement was successful otherwise false
      62                 :            :         */
      63                 :            :         sal_Bool    skipDeleted(IResultSetHelper::Movement _eCursorPosition, sal_Int32 _nOffset, sal_Bool _bRetrieveData);
      64                 :            :         /**
      65                 :            :             clear the map and the vector used in this class
      66                 :            :         */
      67                 :            :         void        clear();
      68                 :            :         /**
      69                 :            :             getMappedPosition returns the mapped position of a logical position
      70                 :            :             @param
      71                 :            :                 sal_Int32 _nBookmark    the logical position
      72                 :            : 
      73                 :            :             @return the mapped position
      74                 :            :         */
      75                 :            :         sal_Int32   getMappedPosition(sal_Int32 _nBookmark) const;
      76                 :            :         /**
      77                 :            :             insertNewPosition adds a new position to the map
      78                 :            :             @param
      79                 :            :                 sal_Int32 _nPos the logical position
      80                 :            :         */
      81                 :            :         void        insertNewPosition(sal_Int32 _nPos);
      82                 :            :         /**
      83                 :            :             deletePosition deletes this position from the map and decrement all following positions
      84                 :            :             @param
      85                 :            :                 sal_Int32 _nPos the logical position
      86                 :            :         */
      87                 :            :         void        deletePosition(sal_Int32 _nPos);
      88                 :            :         /**
      89                 :            :             getLastPosition returns the last position
      90                 :            :             @return the last position
      91                 :            :         */
      92                 :            :         inline sal_Int32    getLastPosition() const { return m_aBookmarksPositions.size(); }
      93                 :         88 :         inline void SetDeletedVisible(bool _bDeletedVisible) { m_bDeletedVisible = _bDeletedVisible; }
      94                 :            :     };
      95                 :            : }
      96                 :            : #endif // CONNECTIVITY_SKIPDELETEDSSET_HXX
      97                 :            : 
      98                 :            : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */