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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/>.
*
* 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/db/geo/shapes.h"
#include "mongo/db/jsobj.h"
namespace mongo {
// This class parses geographic data.
// It parses a subset of GeoJSON and creates S2 shapes from it.
// See http://geojson.org/geojson-spec.html for the spec.
//
// This class also parses the ad-hoc geo formats that MongoDB introduced.
//
// parse* methods may do some more validation than the is* methods; they return false if they
// encounter invalid geometry and true if the geometry is parsed successfully.
class GeoParser {
public:
// Geospatial specifier after $geoWithin / $geoIntersects predicates.
// i.e. "$box" in { $box: [[1, 2], [3, 4]] }
enum GeoSpecifier {
UNKNOWN = 0,
BOX, // $box
CENTER, // $center
POLYGON, // $polygon
CENTER_SPHERE, // $centerSphere
GEOMETRY // GeoJSON geometry, $geometry
};
// GeoJSON type defined in GeoJSON document.
// i.e. "Point" in { type: "Point", coordinates: [1, 2] }
enum GeoJSONType {
GEOJSON_UNKNOWN = 0,
GEOJSON_POINT,
GEOJSON_LINESTRING,
GEOJSON_POLYGON,
GEOJSON_MULTI_POINT,
GEOJSON_MULTI_LINESTRING,
GEOJSON_MULTI_POLYGON,
GEOJSON_GEOMETRY_COLLECTION
};
static GeoSpecifier parseGeoSpecifier(const BSONElement& elem);
static GeoJSONType parseGeoJSONType(const BSONObj& obj);
// Legacy points can contain extra data as extra fields - these are valid to index
// e.g. { x: 1, y: 1, z: 1 }
static Status parseLegacyPoint(const BSONElement& elem,
PointWithCRS* out,
bool allowAddlFields = false);
// Parse the BSON object after $box, $center, etc.
static Status parseLegacyBox(const BSONObj& obj, BoxWithCRS* out);
static Status parseLegacyCenter(const BSONObj& obj, CapWithCRS* out);
static Status parseLegacyPolygon(const BSONObj& obj, PolygonWithCRS* out);
static Status parseCenterSphere(const BSONObj& obj, CapWithCRS* out);
static Status parseGeoJSONPolygon(const BSONObj& obj, PolygonWithCRS* out);
static Status parseGeoJSONPoint(const BSONObj& obj, PointWithCRS* out);
static Status parseGeoJSONLine(const BSONObj& obj, LineWithCRS* out);
static Status parseMultiPoint(const BSONObj& obj, MultiPointWithCRS* out);
static Status parseMultiLine(const BSONObj& obj, MultiLineWithCRS* out);
static Status parseMultiPolygon(const BSONObj& obj, MultiPolygonWithCRS* out);
static Status parseGeometryCollection(const BSONObj& obj, GeometryCollection* out);
// For geo near
static Status parseQueryPoint(const BSONElement& elem, PointWithCRS* out);
static Status parseStoredPoint(const BSONElement& elem, PointWithCRS* out);
static bool parsePointWithMaxDistance(const BSONObj& obj, PointWithCRS* out, double* maxOut);
};
} // namespace mongo
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