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/** @file latlong_distance_keymaker.cc
* @brief LatLongDistanceKeyMaker implementation.
*/
/* Copyright 2008 Lemur Consulting Ltd
* Copyright 2011 Richard Boulton
* Copyright 2012 Olly Betts
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
* USA
*/
#include <config.h>
#include "xapian/geospatial.h"
#include "xapian/document.h"
#include "xapian/queryparser.h" // For sortable_serialise.
using namespace Xapian;
using namespace std;
string
LatLongDistanceKeyMaker::operator()(const Document &doc) const
{
string val(doc.get_value(slot));
if (val.empty()) {
return defkey;
}
LatLongCoords doccoords;
doccoords.unserialise(val);
double distance = (*metric)(centre, doccoords);
return sortable_serialise(distance);
}
LatLongDistanceKeyMaker::~LatLongDistanceKeyMaker()
{
delete metric;
}
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