1
2 /**
3 * Copyright (C) 2018-present MongoDB, Inc.
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the Server Side Public License, version 1,
7 * as published by MongoDB, Inc.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * Server Side Public License for more details.
13 *
14 * You should have received a copy of the Server Side Public License
15 * along with this program. If not, see
16 * <http://www.mongodb.com/licensing/server-side-public-license>.
17 *
18 * As a special exception, the copyright holders give permission to link the
19 * code of portions of this program with the OpenSSL library under certain
20 * conditions as described in each individual source file and distribute
21 * linked combinations including the program with the OpenSSL library. You
22 * must comply with the Server Side Public License in all respects for
23 * all of the code used other than as permitted herein. If you modify file(s)
24 * with this exception, you may extend this exception to your version of the
25 * file(s), but you are not obligated to do so. If you do not wish to do so,
26 * delete this exception statement from your version. If you delete this
27 * exception statement from all source files in the program, then also delete
28 * it in the license file.
29 */
30
31 #include "mongo/db/index/btree_access_method.h"
32
33 #include <vector>
34
35 #include "mongo/base/status.h"
36 #include "mongo/base/status_with.h"
37 #include "mongo/db/catalog/index_catalog_entry.h"
38 #include "mongo/db/jsobj.h"
39 #include "mongo/db/keypattern.h"
40
41 namespace mongo {
42
43 using std::vector;
44
45 // Standard Btree implementation below.
BtreeAccessMethod(IndexCatalogEntry * btreeState,SortedDataInterface * btree)46 BtreeAccessMethod::BtreeAccessMethod(IndexCatalogEntry* btreeState, SortedDataInterface* btree)
47 : IndexAccessMethod(btreeState, btree) {
48 // The key generation wants these values.
49 vector<const char*> fieldNames;
50 vector<BSONElement> fixed;
51
52 BSONObjIterator it(_descriptor->keyPattern());
53 while (it.more()) {
54 BSONElement elt = it.next();
55 fieldNames.push_back(elt.fieldName());
56 fixed.push_back(BSONElement());
57 }
58
59 _keyGenerator = BtreeKeyGenerator::make(_descriptor->version(),
60 fieldNames,
61 fixed,
62 _descriptor->isSparse(),
63 btreeState->getCollator());
64 massert(16745, "Invalid index version for key generation.", _keyGenerator);
65 }
66
doGetKeys(const BSONObj & obj,GetKeysContext context,BSONObjSet * keys,MultikeyPaths * multikeyPaths) const67 void BtreeAccessMethod::doGetKeys(const BSONObj& obj,
68 GetKeysContext context,
69 BSONObjSet* keys,
70 MultikeyPaths* multikeyPaths) const {
71 _keyGenerator->getKeys(obj, keys, multikeyPaths);
72 }
73
74 } // namespace mongo
75