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
193
194
195
196
197
198
199
200
201
202
203
204
|
/**
* Copyright (C) 2018-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
#include "mongo/db/geo/geometry_container.h"
#include "mongo/db/matcher/expression.h"
#include "mongo/db/matcher/expression_leaf.h"
namespace mongo {
struct PointWithCRS;
class GeometryContainer;
// This represents either a $within or a $geoIntersects.
class GeoExpression {
MONGO_DISALLOW_COPYING(GeoExpression);
public:
GeoExpression();
GeoExpression(const std::string& f);
enum Predicate { WITHIN, INTERSECT, INVALID };
// parseFrom() must be called before getGeometry() to ensure initialization of geoContainer
Status parseFrom(const BSONObj& obj);
std::string getField() const {
return field;
}
Predicate getPred() const {
return predicate;
}
const GeometryContainer& getGeometry() const {
return *geoContainer;
}
private:
// Parse geospatial query
// e.g.
// { "$intersect" : { "$geometry" : { "type" : "Point", "coordinates": [ 40, 5 ] } } }
Status parseQuery(const BSONObj& obj);
// Name of the field in the query.
std::string field;
std::unique_ptr<GeometryContainer> geoContainer;
Predicate predicate;
};
class GeoMatchExpression : public LeafMatchExpression {
public:
GeoMatchExpression(StringData path, const GeoExpression* query, const BSONObj& rawObj);
GeoMatchExpression(StringData path,
std::shared_ptr<const GeoExpression> query,
const BSONObj& rawObj);
virtual ~GeoMatchExpression() {}
bool matchesSingleElement(const BSONElement&, MatchDetails* details = nullptr) const final;
virtual void debugString(StringBuilder& debug, int level = 0) const;
virtual void serialize(BSONObjBuilder* out) const;
virtual bool equivalent(const MatchExpression* other) const;
virtual std::unique_ptr<MatchExpression> shallowClone() const;
void setCanSkipValidation(bool val) {
_canSkipValidation = val;
}
bool getCanSkipValidation() const {
return _canSkipValidation;
}
const GeoExpression& getGeoExpression() const {
return *_query;
}
private:
ExpressionOptimizerFunc getOptimizer() const final {
return [](std::unique_ptr<MatchExpression> expression) { return expression; };
}
// The original geo specification provided by the user.
BSONObj _rawObj;
// Share ownership of our query with all of our clones
std::shared_ptr<const GeoExpression> _query;
bool _canSkipValidation;
};
// TODO: Make a struct, turn parse stuff into something like
// static Status parseNearQuery(const BSONObj& obj, NearQuery** out);
class GeoNearExpression {
MONGO_DISALLOW_COPYING(GeoNearExpression);
public:
GeoNearExpression();
GeoNearExpression(const std::string& f);
Status parseFrom(const BSONObj& obj);
// The name of the field that contains the geometry.
std::string field;
// The starting point of the near search. Use forward declaration of geometries.
std::unique_ptr<PointWithCRS> centroid;
// Min and max distance from centroid that we're willing to search.
// Distance is in units of the geometry's CRS, except SPHERE and isNearSphere => radians
double minDistance;
double maxDistance;
// Is this a $nearSphere query
bool isNearSphere;
// $nearSphere with a legacy point implies units are radians
bool unitsAreRadians;
// $near with a non-legacy point implies a wrapping query, otherwise the query doesn't wrap
bool isWrappingQuery;
std::string toString() const {
std::stringstream ss;
ss << " field=" << field;
ss << " maxdist=" << maxDistance;
ss << " isNearSphere=" << isNearSphere;
return ss.str();
}
private:
bool parseLegacyQuery(const BSONObj& obj);
Status parseNewQuery(const BSONObj& obj);
};
class GeoNearMatchExpression : public LeafMatchExpression {
public:
GeoNearMatchExpression(StringData path, const GeoNearExpression* query, const BSONObj& rawObj);
GeoNearMatchExpression(StringData path,
std::shared_ptr<const GeoNearExpression> query,
const BSONObj& rawObj);
virtual ~GeoNearMatchExpression() {}
/**
* Stub implementation that should never be called, since geoNear execution requires an
* appropriate geo index.
*/
bool matchesSingleElement(const BSONElement&, MatchDetails* details = nullptr) const final;
virtual void debugString(StringBuilder& debug, int level = 0) const;
virtual void serialize(BSONObjBuilder* out) const;
virtual bool equivalent(const MatchExpression* other) const;
virtual std::unique_ptr<MatchExpression> shallowClone() const;
const GeoNearExpression& getData() const {
return *_query;
}
private:
ExpressionOptimizerFunc getOptimizer() const final {
return [](std::unique_ptr<MatchExpression> expression) { return expression; };
}
// The original geo specification provided by the user.
BSONObj _rawObj;
// Share ownership of our query with all of our clones
std::shared_ptr<const GeoNearExpression> _query;
};
} // namespace mongo
|
