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/*************************************************************************
*
* $RCSfile: TSkipDeletedSet.hxx,v $
*
* $Revision: 1.4 $
*
* last change: $Author: rt $ $Date: 2004-03-02 12:35:45 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (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.openoffice.org/license.html.
*
* Software provided under this License is provided on an AS IS basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef CONNECTIVITY_SKIPDELETEDSSET_HXX
#define CONNECTIVITY_SKIPDELETEDSSET_HXX
#ifndef CONNECTIVITY_TRESULTSETHELPER_HXX
#include "TResultSetHelper.hxx"
#endif
#ifndef _RTL_ALLOC_H_
#include <rtl/alloc.h>
#endif
#include <map>
#include <vector>
namespace connectivity
{
/**
the class OSkipDeletedSet supports a general method to skip deleted rows
*/
class OSkipDeletedSet
{
typedef ::std::map<sal_Int32,sal_Int32> TInt2IntMap;
TInt2IntMap m_aBookmarks; // map from postion to logical position
::std::vector<TInt2IntMap::iterator> m_aBookmarksPositions;// vector of iterators to position map, the order is the logical position
IResultSetHelper* m_pHelper; // used for moving in the resultset
sal_Bool moveAbsolute(sal_Int32 _nOffset,sal_Bool _bRetrieveData);
public:
OSkipDeletedSet(IResultSetHelper* _pHelper);
~OSkipDeletedSet();
inline static void * SAL_CALL operator new( size_t nSize ) SAL_THROW( () )
{ return ::rtl_allocateMemory( nSize ); }
inline static void * SAL_CALL operator new( size_t nSize,void* _pHint ) SAL_THROW( () )
{ return _pHint; }
inline static void SAL_CALL operator delete( void * pMem ) SAL_THROW( () )
{ ::rtl_freeMemory( pMem ); }
inline static void SAL_CALL operator delete( void * pMem,void* _pHint ) SAL_THROW( () )
{ }
/**
skipDeleted moves the resultset to the position defined by the parameters
it garantees that the row isn't deleted
@param
IResultSetHelper::Movement _eCursorPosition in which direction the resultset should be moved
sal_Int32 _nOffset the position relativ to the movement
sal_Bool _bRetrieveData is true when the current row should be filled which data
@return
true when the movement was successful otherwise false
*/
sal_Bool skipDeleted(IResultSetHelper::Movement _eCursorPosition, sal_Int32 _nOffset, sal_Bool _bRetrieveData);
/**
clear the map and the vector used in this class
*/
void clear();
/**
getMappedPosition returns the mapped position of a logical position
@param
sal_Int32 _nPos the logical position
@return the mapped position
*/
sal_Int32 getMappedPosition(sal_Int32 _nPos) const;
/**
insertNewPosition adds a new position to the map
@param
sal_Int32 _nPos the logical position
*/
void insertNewPosition(sal_Int32 _nPos);
/**
deletePosition deletes this position from the map and decrement all following positions
@param
sal_Int32 _nPos the logical position
*/
void deletePosition(sal_Int32 _nPos);
/**
getLastPosition returns the last position
@return the last position
*/
sal_Int32 getLastPosition() const { return m_aBookmarksPositions.size(); }
};
}
#endif // CONNECTIVITY_SKIPDELETEDSSET_HXX
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