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
|
/**
* Copyright (C) 2016 MongoDB 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 <vector>
#include "mongo/db/pipeline/document.h"
#include "mongo/db/pipeline/expression_context.h"
#include "mongo/db/pipeline/field_path.h"
#include "mongo/db/pipeline/value.h"
#include "mongo/db/pipeline/value_comparator.h"
#include "mongo/stdx/functional.h"
namespace mongo {
namespace document_path_support {
/**
* Calls 'callback' once for each value found at 'path' in the document 'doc'. If an array value is
* found at 'path', it is expanded and 'callback' is invoked once for each value within the array.
*
* For example, 'callback' will be invoked on the values 1, 1, {a: 1}, 2 and 3 are on the path "x.y"
* in the document {x: [{y: 1}, {y: 1}, {y: {a: 1}}, {y: [2, 3]}, 3, 4]}.
*/
void visitAllValuesAtPath(Document doc,
const FieldPath& path,
stdx::function<void(const Value&)> callback);
} // namespace document_path_support
} // namespace mongo
|
