1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* 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 .
*/
#ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DINDEXNODE_HXX
#define INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DINDEXNODE_HXX
#include <file/fcode.hxx>
#include <connectivity/FValue.hxx>
#include <memory>
#define NODE_NOTFOUND 0xFFFF
#define DINDEX_PAGE_SIZE 512
class SvStream;
namespace connectivity
{
namespace dbase
{
class ONDXNode;
class ODbaseIndex;
// Index Key
typedef file::OOperand ONDXKey_BASE;
class ONDXKey : public ONDXKey_BASE
{
friend class ONDXNode;
sal_uInt32 nRecord; /* Record pointer */
ORowSetValue xValue; /* Key values */
public:
ONDXKey();
ONDXKey(const ORowSetValue& rVal, sal_Int32 eType, sal_uInt32 nRec);
ONDXKey(const OUString& aStr, sal_uInt32 nRec);
ONDXKey(double aVal, sal_uInt32 nRec);
inline ONDXKey(const ONDXKey& rKey);
inline ONDXKey& operator= (const ONDXKey& rKey);
virtual void setValue(const ORowSetValue& _rVal) override;
virtual const ORowSetValue& getValue() const override;
sal_uInt32 GetRecord() const { return nRecord; }
void setRecord(sal_uInt32 _nRec) { nRecord = _nRec; }
void ResetRecord() { nRecord = 0; }
bool operator == (const ONDXKey& rKey) const;
bool operator != (const ONDXKey& rKey) const;
bool operator < (const ONDXKey& rKey) const;
bool operator <= (const ONDXKey& rKey) const;
bool operator > (const ONDXKey& rKey) const;
static bool IsText(sal_Int32 eType);
private:
int Compare(const ONDXKey& rKey) const;
};
class ONDXPage;
// Index Page Pointer
// This is ref-count pointer class
class ONDXPagePtr
{
friend SvStream& WriteONDXPagePtr(SvStream &rStream, const ONDXPagePtr&);
friend SvStream& operator >> (SvStream &rStream, ONDXPagePtr&);
ONDXPage* mpPage;
sal_uInt32 nPagePos; // Position in the index file
public:
ONDXPagePtr();
ONDXPagePtr(ONDXPagePtr&& rObj) noexcept;
ONDXPagePtr(ONDXPagePtr const & rRef);
ONDXPagePtr(ONDXPage* pRefPage);
~ONDXPagePtr();
void Clear();
ONDXPagePtr& operator=(ONDXPagePtr const & rRef);
ONDXPagePtr& operator=(ONDXPagePtr && rRef);
bool Is() const { return mpPage != nullptr; }
ONDXPage * operator ->() const { assert(mpPage != nullptr); return mpPage; }
operator ONDXPage *() const { return mpPage; }
sal_uInt32 GetPagePos() const {return nPagePos;}
bool HasPage() const {return nPagePos != 0;}
};
// Index Page
// This is a ref-counted class, with re-cycling
class ONDXPage
{
friend class ODbaseIndex;
friend class ONDXPagePtr;
friend SvStream& WriteONDXPage(SvStream &rStream, const ONDXPage&);
friend SvStream& operator >> (SvStream &rStream, ONDXPage&);
// work around a clang 3.5 optimization bug: if the bNoDelete is *first*
// it mis-compiles "if (--nRefCount == 0)" and never deletes any object
unsigned int nRefCount : 31;
// the only reason this is not bool is because MSVC cannot handle mixed type bitfields
unsigned int bNoDelete : 1;
sal_uInt32 nPagePos; // Position in the index file
bool bModified : 1;
sal_uInt16 nCount;
ONDXPagePtr aParent, // Parent page
aChild; // Pointer to the right child page
ODbaseIndex& rIndex;
std::unique_ptr<ONDXNode[]>
ppNodes; // Array of nodes
public:
// Node operations
sal_uInt16 Count() const {return nCount;}
bool Insert(ONDXNode& rNode, sal_uInt32 nRowsLeft = 0);
bool Insert(sal_uInt16 nIndex, ONDXNode& rNode);
bool Append(ONDXNode& rNode);
void Delete(sal_uInt16);
void Remove(sal_uInt16);
void Release(bool bSave = true);
void ReleaseFull();
// Split and merge
ONDXNode Split(ONDXPage& rPage);
void Merge(sal_uInt16 nParentNodePos, const ONDXPagePtr& xPage);
// Access operators
ONDXNode& operator[] (sal_uInt16 nPos);
const ONDXNode& operator[] (sal_uInt16 nPos) const;
bool IsRoot() const;
bool IsLeaf() const;
bool IsModified() const;
bool HasParent() const;
bool IsFull() const;
sal_uInt32 GetPagePos() const {return nPagePos;}
ONDXPagePtr& GetChild(ODbaseIndex const * pIndex = nullptr);
// Parent does not need to be reloaded
const ONDXPagePtr& GetParent() const;
ODbaseIndex& GetIndex() {return rIndex;}
const ODbaseIndex& GetIndex() const {return rIndex;}
// Setting the child, via reference to retain the PagePos
void SetChild(ONDXPagePtr aCh);
void SetParent(ONDXPagePtr aPa);
sal_uInt16 Search(const ONDXKey& rSearch);
sal_uInt16 Search(const ONDXPage* pPage);
void SearchAndReplace(const ONDXKey& rSearch, ONDXKey const & rReplace);
protected:
ONDXPage(ODbaseIndex& rIndex, sal_uInt32 nPos, ONDXPage*);
~ONDXPage();
void ReleaseRef();
void QueryDelete();
void AddNextRef()
{
assert( nRefCount < (1 << 30) && "Do not add refs to dead objects" );
++nRefCount;
}
void AddFirstRef()
{
assert( nRefCount < (1 << 30) && "Do not add refs to dead objects" );
if( bNoDelete )
bNoDelete = 0;
++nRefCount;
}
void SetModified(bool bMod) {bModified = bMod;}
void SetPagePos(sal_uInt32 nPage) {nPagePos = nPage;}
bool Find(const ONDXKey&); // Descend recursively
sal_uInt16 FindPos(const ONDXKey& rKey) const;
#if OSL_DEBUG_LEVEL > 1
void PrintPage();
#endif
};
SvStream& WriteONDXPagePtr(SvStream &rStream, const ONDXPagePtr&);
SvStream& operator >> (SvStream &rStream, ONDXPagePtr&);
inline bool ONDXPage::IsRoot() const {return !aParent.Is();}
inline bool ONDXPage::IsLeaf() const {return !aChild.HasPage();}
inline bool ONDXPage::IsModified() const {return bModified;}
inline bool ONDXPage::HasParent() const {return aParent.Is();}
inline const ONDXPagePtr& ONDXPage::GetParent() const {return aParent;}
inline void ONDXPage::SetParent(ONDXPagePtr aPa = ONDXPagePtr())
{
aParent = aPa;
}
inline void ONDXPage::SetChild(ONDXPagePtr aCh = ONDXPagePtr())
{
aChild = aCh;
if (aChild.Is())
aChild->SetParent(this);
}
SvStream& operator >> (SvStream &rStream, ONDXPage& rPage);
SvStream& WriteONDXPage(SvStream &rStream, const ONDXPage& rPage);
// Index Node
class ONDXNode
{
friend class ONDXPage;
ONDXPagePtr aChild; /* Next page reference */
ONDXKey aKey;
public:
ONDXNode(){}
ONDXNode(const ONDXKey& rKey)
:aKey(rKey) {}
// Does the node point to a page?
bool HasChild() const {return aChild.HasPage();}
// If an index is provided, we may be able to retrieve the page
ONDXPagePtr& GetChild(ODbaseIndex* pIndex = nullptr, ONDXPage* = nullptr);
const ONDXKey& GetKey() const { return aKey;}
ONDXKey& GetKey() { return aKey;}
// Setting the child, via reference to retain the PagePos
void SetChild(ONDXPagePtr aCh = ONDXPagePtr(), ONDXPage* = nullptr);
void Write(SvStream &rStream, const ONDXPage& rPage) const;
void Read(SvStream &rStream, ODbaseIndex const &);
};
inline ONDXKey::ONDXKey(const ONDXKey& rKey)
: ONDXKey_BASE(rKey.getDBType())
,nRecord(rKey.nRecord)
,xValue(rKey.xValue)
{
}
inline ONDXKey& ONDXKey::operator=(const ONDXKey& rKey)
{
if(&rKey == this)
return *this;
xValue = rKey.xValue;
nRecord = rKey.nRecord;
m_eDBType = rKey.getDBType();
return *this;
}
inline bool ONDXKey::operator == (const ONDXKey& rKey) const
{
if(&rKey == this)
return true;
return Compare(rKey) == 0;
}
inline bool ONDXKey::operator != (const ONDXKey& rKey) const
{
return !operator== (rKey);
}
inline bool ONDXKey::operator < (const ONDXKey& rKey) const
{
return Compare(rKey) < 0;
}
inline bool ONDXKey::operator > (const ONDXKey& rKey) const
{
return Compare(rKey) > 0;
}
inline bool ONDXKey::operator <= (const ONDXKey& rKey) const
{
return !operator > (rKey);
}
inline void ONDXNode::SetChild(ONDXPagePtr aCh, ONDXPage* pParent)
{
aChild = aCh;
if (aChild.Is())
aChild->SetParent(pParent);
}
}
}
#endif // INCLUDED_CONNECTIVITY_SOURCE_INC_DBASE_DINDEXNODE_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
