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/**
* Copyright (C) 2021-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.
*/
#include "mongo/db/matcher/expression_internal_bucket_geo_within.h"
#include "mongo/db/bson/dotted_path_support.h"
#include "mongo/db/geo/geoparser.h"
#include "mongo/db/timeseries/timeseries_constants.h"
#include "mongo/platform/basic.h"
#include "third_party/s2/s2cellid.h"
#include "third_party/s2/s2cellunion.h"
#include "third_party/s2/s2regioncoverer.h"
namespace mongo {
constexpr StringData InternalBucketGeoWithinMatchExpression::kName;
void InternalBucketGeoWithinMatchExpression::debugString(StringBuilder& debug,
int indentationLevel) const {
_debugAddSpace(debug, indentationLevel);
BSONObjBuilder builder;
serialize(&builder, true);
debug << builder.obj().toString() << "\n";
const auto* tag = getTag();
if (tag) {
debug << " ";
tag->debugString(&debug);
}
debug << "\n";
}
bool InternalBucketGeoWithinMatchExpression::equivalent(const MatchExpression* expr) const {
if (matchType() != expr->matchType()) {
return false;
}
const auto* other = static_cast<const InternalBucketGeoWithinMatchExpression*>(expr);
return SimpleBSONObjComparator::kInstance.evaluate(
_geoContainer->getGeoElement().Obj() ==
other->getGeoContainer()->getGeoElement().Obj()) &&
_field == other->getField();
}
bool InternalBucketGeoWithinMatchExpression::matches(const MatchableDocument* doc,
MatchDetails* details) const {
return _matchesBSONObj(doc->toBSON());
}
bool InternalBucketGeoWithinMatchExpression::_matchesBSONObj(const BSONObj& obj) const {
auto controlMinElm = dotted_path_support::extractElementAtPath(
obj, str::stream() << timeseries::kControlMinFieldNamePrefix << _field);
auto controlMaxElm = dotted_path_support::extractElementAtPath(
obj, str::stream() << timeseries::kControlMaxFieldNamePrefix << _field);
std::string path = str::stream() << timeseries::kControlMinFieldNamePrefix << _field;
if (controlMinElm.eoo() || controlMaxElm.eoo() || !controlMinElm.isABSONObj() ||
!controlMaxElm.isABSONObj())
return false;
if (controlMinElm.type() != controlMaxElm.type())
return true;
// Returns true if the bucket should be unpacked and all the data within the bucket should be
// checked later.
auto parseMinMaxPoint = [](const BSONElement& elem, PointWithCRS* out) -> bool {
auto geoObj = elem.embeddedObject();
if (Array == elem.type() || geoObj.firstElement().isNumber()) {
// Legacy Point.
if (!GeoParser::parseLegacyPoint(elem, out, true).isOK())
return true;
} else {
// If the bucket contains GeoJSON objects of types other than 'Points' we cannot be sure
// whether this bucket contains data is within the provided region.
if (!geoObj.hasField(GEOJSON_TYPE) ||
geoObj[GEOJSON_TYPE].String() != GEOJSON_TYPE_POINT)
return true;
// GeoJSON Point.
if (!GeoParser::parseGeoJSONPoint(geoObj, out).isOK())
return true;
}
return false;
};
PointWithCRS minPoint;
PointWithCRS maxPoint;
const CRS crs = _geoContainer->getNativeCRS();
if (parseMinMaxPoint(controlMinElm, &minPoint) || parseMinMaxPoint(controlMaxElm, &maxPoint))
return true;
if (minPoint.crs != maxPoint.crs || crs != minPoint.crs)
return true;
if (crs == FLAT && _geoContainer->hasR2Region()) {
// Construct a 2D Box for legacy coordinate pairs. This box is used to check if the box may
// contain points that are within _geoContainer.
const Box bbox2D(minPoint.oldPoint, maxPoint.oldPoint);
if (_geoContainer->getR2Region().fastDisjoint(bbox2D))
return false;
}
if (crs == SPHERE && _geoContainer->hasS2Region()) {
const S2LatLngRect rect(S2LatLng(minPoint.point), S2LatLng(maxPoint.point));
S2RegionCoverer coverer;
S2CellUnion cellUnionRect;
S2CellUnion cellUnionGeo;
coverer.GetCellUnion(rect, &cellUnionRect);
coverer.GetCellUnion(_geoContainer->getS2Region(), &cellUnionGeo);
if (!cellUnionRect.Intersects(&cellUnionGeo))
return false;
}
return true;
}
void InternalBucketGeoWithinMatchExpression::serialize(BSONObjBuilder* builder,
bool includePath) const {
BSONObjBuilder bob(builder->subobjStart(InternalBucketGeoWithinMatchExpression::kName));
BSONObjBuilder withinRegionBob(
bob.subobjStart(InternalBucketGeoWithinMatchExpression::kWithinRegion));
withinRegionBob.append(_geoContainer->getGeoElement());
withinRegionBob.doneFast();
bob.append(InternalBucketGeoWithinMatchExpression::kField, _field);
bob.doneFast();
}
std::unique_ptr<MatchExpression> InternalBucketGeoWithinMatchExpression::shallowClone() const {
std::unique_ptr<InternalBucketGeoWithinMatchExpression> next =
std::make_unique<InternalBucketGeoWithinMatchExpression>(_geoContainer, _field);
if (getTag()) {
next->setTag(getTag()->clone());
}
return next;
}
} // namespace mongo
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