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/**
* Copyright (C) 2017 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/matcher/expression_internal_expr_eq.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/bson/bsonobjbuilder.h"
namespace mongo {
constexpr StringData InternalExprEqMatchExpression::kName;
bool InternalExprEqMatchExpression::matchesSingleElement(const BSONElement& elem,
MatchDetails* details) const {
// We use NonLeafArrayBehavior::kMatchSubpath traversal in InternalExprEqMatchExpression. This
// means matchesSinglElement() will be called when an array is found anywhere along the patch we
// are matching against. When this occurs, we return 'true' and depend on the corresponding
// ExprMatchExpression node to filter properly.
if (elem.type() == BSONType::Array) {
return true;
}
if (elem.canonicalType() != _rhs.canonicalType()) {
return false;
}
auto comp = BSONElement::compareElements(
elem, _rhs, BSONElement::ComparisonRules::kConsiderFieldName, _collator);
return comp == 0;
}
std::unique_ptr<MatchExpression> InternalExprEqMatchExpression::shallowClone() const {
auto clone = stdx::make_unique<InternalExprEqMatchExpression>(path(), _rhs);
clone->setCollator(_collator);
if (getTag()) {
clone->setTag(getTag()->clone());
}
return std::move(clone);
}
} // namespace mongo
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