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Diffstat (limited to 'connectivity/source/inc/TSkipDeletedSet.hxx')
-rw-r--r-- | connectivity/source/inc/TSkipDeletedSet.hxx | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/connectivity/source/inc/TSkipDeletedSet.hxx b/connectivity/source/inc/TSkipDeletedSet.hxx new file mode 100644 index 000000000000..bcd3fc23f1a6 --- /dev/null +++ b/connectivity/source/inc/TSkipDeletedSet.hxx @@ -0,0 +1,105 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org 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 version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ +#ifndef CONNECTIVITY_SKIPDELETEDSSET_HXX +#define CONNECTIVITY_SKIPDELETEDSSET_HXX + +#include "TResultSetHelper.hxx" +#include <rtl/alloc.h> +#include <hash_map> +#include <vector> +#include "connectivity/dbtoolsdllapi.hxx" + +namespace connectivity +{ + /** + the class OSkipDeletedSet supports a general method to skip deleted rows + */ + class OOO_DLLPUBLIC_DBTOOLS OSkipDeletedSet + { + ::std::vector<sal_Int32> m_aBookmarksPositions;// vector of iterators to position map, the order is the logical position + IResultSetHelper* m_pHelper; // used for moving in the resultset + bool m_bDeletedVisible; + + 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,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 *,void* ) 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 _nBookmark the logical position + + @return the mapped position + */ + sal_Int32 getMappedPosition(sal_Int32 _nBookmark) 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 + */ + inline sal_Int32 getLastPosition() const { return m_aBookmarksPositions.size(); } + inline void SetDeleted(bool _bDeletedVisible) { m_bDeletedVisible = _bDeletedVisible; } + }; +} +#endif // CONNECTIVITY_SKIPDELETEDSSET_HXX + |