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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 <vector>
#include "mongo/base/status.h"
#include "mongo/db/geo/geoquery.h"
#include "mongo/db/index/2d_common.h"
#include "mongo/db/index/index_cursor.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/pdfile.h"
#include "mongo/platform/unordered_map.h"
namespace mongo {
class TwoDAccessMethod;
class GeoNearArguments;
namespace twod_internal {
class GeoCursorBase;
class TwoDGeoNearRunner {
public:
static bool run2DGeoNear(NamespaceDetails* nsd, int idxNo, const BSONObj& cmdObj,
const GeoNearArguments &parsedArgs, string& errmsg,
BSONObjBuilder& result, unordered_map<string, double>* stats);
};
}
class TwoDIndexCursor : public IndexCursor {
public:
TwoDIndexCursor(TwoDAccessMethod* accessMethod);
/**
* Parse the query, figure out if it's a near or a non-near predicate, and create the
* appropriate sub-cursor.
*/
virtual Status seek(const BSONObj& position);
/**
* We pay attention to the numWanted option.
*/
virtual Status setOptions(const CursorOptions& options);
// Implemented:
virtual bool isEOF() const;
virtual BSONObj getKey() const;
virtual DiskLoc getValue() const;
virtual void next();
virtual string toString();
virtual Status savePosition();
virtual Status restorePosition();
virtual void explainDetails(BSONObjBuilder* b);
private:
TwoDAccessMethod* _accessMethod;
int _numWanted;
scoped_ptr<twod_internal::GeoCursorBase> _underlyingCursor;
};
} // namespace mongo
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