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package de.lmu.ifi.dbs.elki.database.ids;
import de.lmu.ifi.dbs.elki.database.datastore.DataStoreIDMap;
/*
This file is part of ELKI:
Environment for Developing KDD-Applications Supported by Index-Structures
Copyright (C) 2012
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/>.
*/
/**
* Static DBID range.
*
* @author Erich Schubert
*/
public interface DBIDRange extends ArrayStaticDBIDs, DataStoreIDMap {
/**
* Get offset in the array for a particular DBID.
*
* Should satisfy {@code range.get(getOffset(id)) == id} and
* {@code range.getOffset(range.get(idx)) == idx}.
*
* @param dbid ID to compute index for
* @return index
*/
int getOffset(DBIDRef dbid);
}
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