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package de.lmu.ifi.dbs.elki.database.lucene;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2015
Ludwig-Maximilians-Universität München
Lehr- und Forschungseinheit für Datenbanksysteme
ELKI Development Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 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 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/>.
*/
import org.apache.lucene.search.DefaultSimilarity;
import org.apache.lucene.search.Similarity;
import de.lmu.ifi.dbs.elki.distance.distancefunction.AbstractDBIDRangeDistanceFunction;
import de.lmu.ifi.dbs.elki.utilities.exceptions.AbortException;
/**
* Distance function, interfacing back into Lucene.
*
* @author Erich Schubert
*/
public class LuceneDistanceFunction extends AbstractDBIDRangeDistanceFunction {
/**
* Lucene similarity.
*/
Similarity sim = new DefaultSimilarity();
@Override
public double distance(int i1, int i2) {
// FIXME: how to compute the same similarity value that lucene uses?
throw new AbortException("Manual distance computations are not yet implemented!");
}
}
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