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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 0 : inline void SetDeletedVisible(bool _bDeletedVisible) { m_bDeletedVisible = _bDeletedVisible; }
94 : };
95 : }
96 : #endif // CONNECTIVITY_SKIPDELETEDSSET_HXX
97 :
98 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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