| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the 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 SetDeletedVisible(bool _bDeletedVisible) { m_bDeletedVisible = _bDeletedVisible; } |
| }; |
| } |
| #endif // CONNECTIVITY_SKIPDELETEDSSET_HXX |
| |