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// matcher.h
/**
* Copyright (C) 2013 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/disallow_copying.h"
#include "mongo/base/status.h"
#include "mongo/bson/bsonobj.h"
#include "mongo/db/matcher/expression.h"
#include "mongo/db/matcher/expression_parser.h"
#include "mongo/db/matcher/extensions_callback_noop.h"
#include "mongo/db/matcher/match_details.h"
namespace mongo {
class CollatorInterface;
/**
* Matcher is a simple wrapper around a BSONObj and the MatchExpression created from it.
*/
class Matcher {
MONGO_DISALLOW_COPYING(Matcher);
public:
/**
* 'collator' must outlive the returned Matcher and any MatchExpression cloned from it.
*/
Matcher(const BSONObj& pattern,
const boost::intrusive_ptr<ExpressionContext>& expCtx,
const ExtensionsCallback& extensionsCallback = ExtensionsCallbackNoop(),
MatchExpressionParser::AllowedFeatureSet allowedFeatures =
MatchExpressionParser::kDefaultSpecialFeatures);
bool matches(const BSONObj& doc, MatchDetails* details = NULL) const;
const BSONObj* getQuery() const {
return &_pattern;
};
std::string toString() const {
return _pattern.toString();
}
MatchExpression* getMatchExpression() {
return _expression.get();
}
private:
BSONObj _pattern;
std::unique_ptr<MatchExpression> _expression;
};
} // namespace mongo
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