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
|
/**
* Copyright (C) 2019-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* 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
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* 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 Server Side 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
namespace mongo {
class DocumentSourceMergeCursors;
class DocumentSourceSequentialDocumentCache;
class DocumentSourceSample;
class DocumentSourceUnwind;
class DocumentSourceCloseCursor;
class DocumentSourceGeoNear;
class DocumentSourceLookUp;
class DocumentSourceInternalInhibitOptimization;
class DocumentSourceLookupChangePostImage;
class DocumentSourceListCachedAndActiveUsers;
class DocumentSourceChangeStreamTransform;
class DocumentSourceOut;
class DocumentSourceRedact;
class DocumentSourceGraphLookUp;
class DocumentSourceExchange;
class DocumentSourceCursor;
class DocumentSourceBucketAuto;
class DocumentSourceSkip;
class DocumentSourceSort;
class DocumentSourceGroup;
class DocumentSourceMock;
class DocumentSourceListLocalSessions;
class DocumentSourcePlanCacheStats;
class DocumentSourceIndexStats;
class DocumentSourceLimit;
class DocumentSourceCurrentOp;
class DocumentSourceSingleDocumentTransformation;
class DocumentSourceChangeStream;
class DocumentSourceShardCheckResumability;
class DocumentSourceEnsureResumeTokenPresent;
class DocumentSourceCheckInvalidate;
class DocumentSourceFacet;
class DocumentSourceInternalSplitPipeline;
class DocumentSourceListSessions;
class DocumentSourceCollStats;
class DocumentSourceTeeConsumer;
class DocumentSourceSampleFromRandomCursor;
class DocumentSourceMatch;
class DocumentSourceOplogMatch;
class DocumentSourceUpdateOnAddShard;
class DocumentSourceBackupCursorExtend;
class DocumentSourceBackupCursor;
class DocumentSourceTestOptimizations;
/**
* This is a base class to allow for dynamic dispatch on a DocumentSource. It implements the visitor
* pattern, in which every derived class from DocumentSource implements an acceptVisitor() method,
* which simply calls the appropriate visit() method on the derived DocumentSourceVisitor class. The
* derived class can do whatever it needs to do for each specific node type in the corresponding
* visit() method.
*/
class DocumentSourceVisitor {
public:
virtual ~DocumentSourceVisitor() = default;
virtual void visit(DocumentSourceMergeCursors* source) = 0;
virtual void visit(DocumentSourceSequentialDocumentCache* source) = 0;
virtual void visit(DocumentSourceSample* source) = 0;
virtual void visit(DocumentSourceUnwind* source) = 0;
virtual void visit(DocumentSourceCloseCursor* source) = 0;
virtual void visit(DocumentSourceGeoNear* source) = 0;
virtual void visit(DocumentSourceLookUp* source) = 0;
virtual void visit(DocumentSourceInternalInhibitOptimization* source) = 0;
virtual void visit(DocumentSourceLookupChangePostImage* source) = 0;
virtual void visit(DocumentSourceListCachedAndActiveUsers* source) = 0;
virtual void visit(DocumentSourceChangeStreamTransform* source) = 0;
virtual void visit(DocumentSourceOut* source) = 0;
virtual void visit(DocumentSourceRedact* source) = 0;
virtual void visit(DocumentSourceGraphLookUp* source) = 0;
virtual void visit(DocumentSourceExchange* source) = 0;
virtual void visit(DocumentSourceCursor* source) = 0;
virtual void visit(DocumentSourceBucketAuto* source) = 0;
virtual void visit(DocumentSourceSkip* source) = 0;
virtual void visit(DocumentSourceSort* source) = 0;
virtual void visit(DocumentSourceGroup* source) = 0;
virtual void visit(DocumentSourceMock* source) = 0;
virtual void visit(DocumentSourceListLocalSessions* source) = 0;
virtual void visit(DocumentSourcePlanCacheStats* source) = 0;
virtual void visit(DocumentSourceIndexStats* source) = 0;
virtual void visit(DocumentSourceLimit* source) = 0;
virtual void visit(DocumentSourceCurrentOp* source) = 0;
virtual void visit(DocumentSourceSingleDocumentTransformation* source) = 0;
virtual void visit(DocumentSourceOplogMatch* source) = 0;
virtual void visit(DocumentSourceShardCheckResumability* source) = 0;
virtual void visit(DocumentSourceEnsureResumeTokenPresent* source) = 0;
virtual void visit(DocumentSourceCheckInvalidate* source) = 0;
virtual void visit(DocumentSourceFacet* source) = 0;
virtual void visit(DocumentSourceInternalSplitPipeline* source) = 0;
virtual void visit(DocumentSourceListSessions* source) = 0;
virtual void visit(DocumentSourceCollStats* source) = 0;
virtual void visit(DocumentSourceTeeConsumer* source) = 0;
virtual void visit(DocumentSourceSampleFromRandomCursor* source) = 0;
virtual void visit(DocumentSourceMatch* source) = 0;
virtual void visit(DocumentSourceUpdateOnAddShard* source) = 0;
virtual void visit(DocumentSourceBackupCursorExtend* source) = 0;
virtual void visit(DocumentSourceBackupCursor* source) = 0;
virtual void visit(DocumentSourceTestOptimizations* source) = 0;
};
} // namespace mongo
|
