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/**
* 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/>.
*/
#pragma once
#include "mongo/base/status.h"
#include "mongo/db/dbmessage.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/matcher/expression.h"
#include "mongo/db/query/lite_parsed_query.h"
namespace mongo {
class CanonicalQuery {
public:
static Status canonicalize(const QueryMessage& qm, CanonicalQuery** out);
// This is for testing, when we don't have a QueryMessage.
static Status canonicalize(const string& ns, const BSONObj& query, CanonicalQuery** out);
// TODO: Make this more legit and useful
// Get a dummy query for internal use or testing. Accessing any of it will crash.
static CanonicalQuery* getInternalQuery() { return new CanonicalQuery(); }
// What namespace is this query over?
const string& ns() const { return _pq->ns(); }
//
// Accessors for the query
//
MatchExpression* root() const { return _root.get(); }
BSONObj getQueryObj() const { return _pq->getFilter(); }
const LiteParsedQuery& getParsed() const { return *_pq; }
string toString() const;
private:
// You must go through canonicalize to create a CanonicalQuery.
CanonicalQuery() { }
scoped_ptr<LiteParsedQuery> _pq;
// _root points into _pq->getFilter()
scoped_ptr<MatchExpression> _root;
};
} // namespace mongo
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