package de.lmu.ifi.dbs.elki.database.datastore.memory;
/*
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 .
*/
import gnu.trove.map.TIntObjectMap;
import gnu.trove.map.hash.TIntObjectHashMap;
import de.lmu.ifi.dbs.elki.database.datastore.WritableDataStore;
import de.lmu.ifi.dbs.elki.database.ids.DBIDRef;
import de.lmu.ifi.dbs.elki.database.ids.DBIDUtil;
/**
* A class to answer representation queries using a map. Basically, it is just a
* wrapper around a regular map.
*
* @author Erich Schubert
*
* @param Representation object type
*/
public class MapIntegerDBIDStore implements WritableDataStore {
/**
* Storage Map.
*/
private TIntObjectMap data;
/**
* Constructor.
*
* @param data Existing map
*/
public MapIntegerDBIDStore(TIntObjectMap data) {
super();
this.data = data;
}
/**
* Constructor.
*/
public MapIntegerDBIDStore() {
super();
this.data = new TIntObjectHashMap<>();
}
/**
* Constructor.
*
* @param size Expected size
*/
public MapIntegerDBIDStore(int size) {
this.data = new TIntObjectHashMap<>(size);
}
@Override
public T get(DBIDRef id) {
return data.get(DBIDUtil.asInteger(id));
}
@Override
public T put(DBIDRef id, T value) {
if(value == null) {
return data.remove(DBIDUtil.asInteger(id));
}
return data.put(DBIDUtil.asInteger(id), value);
}
@Override
public void destroy() {
data = null;
}
@Override
public void delete(DBIDRef id) {
data.remove(DBIDUtil.asInteger(id));
}
@Override
public String getLongName() {
return "raw";
}
@Override
public String getShortName() {
return "raw";
}
}