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
|
// index_catalog_entry.h
/**
* Copyright (C) 2013 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <string>
#include "mongo/base/owned_pointer_vector.h"
#include "mongo/bson/ordering.h"
#include "mongo/db/record_id.h"
namespace mongo {
class CollectionCatalogEntry;
class CollectionInfoCache;
class HeadManager;
class IndexAccessMethod;
class IndexDescriptor;
class MatchExpression;
class OperationContext;
class IndexCatalogEntry {
MONGO_DISALLOW_COPYING(IndexCatalogEntry);
public:
IndexCatalogEntry(StringData ns,
CollectionCatalogEntry* collection, // not owned
IndexDescriptor* descriptor, // ownership passes to me
CollectionInfoCache* infoCache); // not owned, optional
~IndexCatalogEntry();
const std::string& ns() const {
return _ns;
}
void init(OperationContext* txn, IndexAccessMethod* accessMethod);
IndexDescriptor* descriptor() {
return _descriptor;
}
const IndexDescriptor* descriptor() const {
return _descriptor;
}
IndexAccessMethod* accessMethod() {
return _accessMethod;
}
const IndexAccessMethod* accessMethod() const {
return _accessMethod;
}
const Ordering& ordering() const {
return _ordering;
}
const MatchExpression* getFilterExpression() const {
return _filterExpression.get();
}
/// ---------------------
const RecordId& head(OperationContext* txn) const;
void setHead(OperationContext* txn, RecordId newHead);
void setIsReady(bool newIsReady);
HeadManager* headManager() const {
return _headManager;
}
// --
bool isMultikey() const;
void setMultikey(OperationContext* txn);
// if this ready is ready for queries
bool isReady(OperationContext* txn) const;
private:
class SetMultikeyChange;
class SetHeadChange;
bool _catalogIsReady(OperationContext* txn) const;
RecordId _catalogHead(OperationContext* txn) const;
bool _catalogIsMultikey(OperationContext* txn) const;
// -----
std::string _ns;
CollectionCatalogEntry* _collection; // not owned here
IndexDescriptor* _descriptor; // owned here
CollectionInfoCache* _infoCache; // not owned here
IndexAccessMethod* _accessMethod; // owned here
// Owned here.
HeadManager* _headManager;
std::unique_ptr<MatchExpression> _filterExpression;
// cached stuff
Ordering _ordering; // TODO: this might be b-tree specific
bool _isReady; // cache of NamespaceDetails info
RecordId _head; // cache of IndexDetails
bool _isMultikey; // cache of NamespaceDetails info
};
class IndexCatalogEntryContainer {
public:
typedef std::vector<IndexCatalogEntry*>::const_iterator const_iterator;
typedef std::vector<IndexCatalogEntry*>::const_iterator iterator;
const_iterator begin() const {
return _entries.vector().begin();
}
const_iterator end() const {
return _entries.vector().end();
}
iterator begin() {
return _entries.vector().begin();
}
iterator end() {
return _entries.vector().end();
}
// TODO: these have to be SUPER SUPER FAST
// maybe even some pointer trickery is in order
const IndexCatalogEntry* find(const IndexDescriptor* desc) const;
IndexCatalogEntry* find(const IndexDescriptor* desc);
IndexCatalogEntry* find(const std::string& name);
unsigned size() const {
return _entries.size();
}
// -----------------
/**
* Removes from _entries and returns the matching entry or NULL if none matches.
*/
IndexCatalogEntry* release(const IndexDescriptor* desc);
bool remove(const IndexDescriptor* desc) {
IndexCatalogEntry* entry = release(desc);
delete entry;
return entry;
}
// pass ownership to EntryContainer
void add(IndexCatalogEntry* entry) {
_entries.mutableVector().push_back(entry);
}
private:
OwnedPointerVector<IndexCatalogEntry> _entries;
};
}
|
