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
|
// collection_info_cache.cpp
/**
* 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.
*/
#include "mongo/db/catalog/collection_info_cache.h"
#include "mongo/db/d_concurrency.h"
#include "mongo/db/query/plan_cache.h"
#include "mongo/db/catalog/collection.h"
#include "mongo/db/index/index_descriptor.h"
#include "mongo/util/debug_util.h"
namespace mongo {
CollectionInfoCache::CollectionInfoCache( Collection* collection )
: _collection( collection ),
_keysComputed( false ),
_planCache(new PlanCache(collection->ns().ns())),
_querySettings(new QuerySettings()) { }
void CollectionInfoCache::reset() {
LOG(1) << _collection->ns().ns() << ": clearing plan cache - collection info cache reset";
clearQueryCache();
_keysComputed = false;
// query settings is not affected by info cache reset.
// index filters should persist throughout life of collection
}
void CollectionInfoCache::computeIndexKeys() {
_indexedPaths.clear();
IndexCatalog::IndexIterator i = _collection->getIndexCatalog()->getIndexIterator( true );
while( i.more() ) {
BSONObj key = i.next()->keyPattern();
BSONObjIterator j( key );
while ( j.more() ) {
BSONElement e = j.next();
_indexedPaths.addPath( e.fieldName() );
}
}
_keysComputed = true;
}
void CollectionInfoCache::notifyOfWriteOp() {
if (NULL != _planCache.get()) {
_planCache->notifyOfWriteOp();
}
}
void CollectionInfoCache::clearQueryCache() {
if (NULL != _planCache.get()) {
_planCache->clear();
}
}
PlanCache* CollectionInfoCache::getPlanCache() const {
return _planCache.get();
}
QuerySettings* CollectionInfoCache::getQuerySettings() const {
return _querySettings.get();
}
}
|
