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// expression_geo.cpp
/**
* 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.
*/
#include "mongo/pch.h"
#include "mongo/db/matcher/expression_geo.h"
namespace mongo {
//
// Geo queries we don't need an index to answer: geoWithin and geoIntersects
//
Status GeoMatchExpression::init( const StringData& path, const GeoQuery* query,
const BSONObj& rawObj ) {
_query.reset(query);
_rawObj = rawObj;
return initPath( path );
}
bool GeoMatchExpression::matchesSingleElement( const BSONElement& e ) const {
if ( !e.isABSONObj())
return false;
GeometryContainer geometry;
if ( !geometry.parseFrom( e.Obj() ) )
return false;
if (GeoQuery::WITHIN == _query->getPred()) {
return _query->getGeometry().contains(geometry);
}
else {
verify(GeoQuery::INTERSECT == _query->getPred());
return _query->getGeometry().intersects(geometry);
}
}
void GeoMatchExpression::debugString( StringBuilder& debug, int level ) const {
_debugAddSpace( debug, level );
debug << "GEO raw = " << _rawObj.toString();
MatchExpression::TagData* td = getTag();
if (NULL != td) {
debug << " ";
td->debugString(&debug);
}
debug << "\n";
}
bool GeoMatchExpression::equivalent( const MatchExpression* other ) const {
if ( matchType() != other->matchType() )
return false;
const GeoMatchExpression* realOther = static_cast<const GeoMatchExpression*>( other );
if ( path() != realOther->path() )
return false;
// TODO:
// return _query == realOther->_query;
return false;
}
LeafMatchExpression* GeoMatchExpression::shallowClone() const {
GeoMatchExpression* next = new GeoMatchExpression();
next->init( path(), NULL, _rawObj);
next->_query = _query;
if (getTag()) {
next->setTag(getTag()->clone());
}
return next;
}
//
// Parse-only geo expressions: geoNear (formerly known as near).
//
Status GeoNearMatchExpression::init( const StringData& path, const NearQuery& query,
const BSONObj& rawObj ) {
_query = query;
_rawObj = rawObj;
return initPath( path );
}
bool GeoNearMatchExpression::matchesSingleElement( const BSONElement& e ) const {
// See ops/update.cpp.
// This node is removed by the query planner. It's only ever called if we're getting an
// elemMatchKey.
return true;
}
void GeoNearMatchExpression::debugString( StringBuilder& debug, int level ) const {
_debugAddSpace( debug, level );
debug << "GEONEAR " << _query.toString();
MatchExpression::TagData* td = getTag();
if (NULL != td) {
debug << " ";
td->debugString(&debug);
}
debug << "\n";
}
bool GeoNearMatchExpression::equivalent( const MatchExpression* other ) const {
if ( matchType() != other->matchType() )
return false;
const GeoNearMatchExpression* realOther = static_cast<const GeoNearMatchExpression*>(other);
if ( path() != realOther->path() )
return false;
// TODO:
// return _query == realOther->_query;
return false;
}
LeafMatchExpression* GeoNearMatchExpression::shallowClone() const {
GeoNearMatchExpression* next = new GeoNearMatchExpression();
next->init( path(), _query, _rawObj );
if (getTag()) {
next->setTag(getTag()->clone());
}
return next;
}
}
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