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/**
* Copyright 2017 (c) 10gen 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 "mongo/base/string_data.h"
#include "mongo/db/matcher/expression_leaf.h"
#include "mongo/stdx/functional.h"
namespace mongo {
class InternalSchemaStrLengthMatchExpression : public LeafMatchExpression {
public:
using Validator = stdx::function<bool(int)>;
InternalSchemaStrLengthMatchExpression(MatchType type,
StringData path,
long long strLen,
StringData name);
virtual ~InternalSchemaStrLengthMatchExpression() {}
virtual Validator getComparator() const = 0;
bool matchesSingleElement(const BSONElement& elem,
MatchDetails* details = nullptr) const final {
if (elem.type() != BSONType::String) {
return false;
}
auto len = str::lengthInUTF8CodePoints(elem.valueStringData());
return getComparator()(len);
};
void debugString(StringBuilder& debug, int level) const final;
void serialize(BSONObjBuilder* out) const final;
bool equivalent(const MatchExpression* other) const final;
protected:
long long strLen() const {
return _strLen;
}
private:
ExpressionOptimizerFunc getOptimizer() const final {
return [](std::unique_ptr<MatchExpression> expression) { return expression; };
}
StringData _name;
long long _strLen = 0;
};
} // namespace mongo
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