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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 <http://www.gnu.org/licenses/>.
*/
import java.util.Arrays;
import de.lmu.ifi.dbs.elki.database.datastore.DataStoreIDMap;
import de.lmu.ifi.dbs.elki.database.datastore.WritableIntegerDataStore;
import de.lmu.ifi.dbs.elki.database.ids.DBIDRef;
/**
* A class to answer representation queries using the stored Array.
*
* @author Erich Schubert
*
* @apiviz.composedOf de.lmu.ifi.dbs.elki.database.datastore.DataStoreIDMap
*/
public class ArrayIntegerStore implements WritableIntegerDataStore {
/**
* Data array
*/
private int[] data;
/**
* DBID to index map
*/
private DataStoreIDMap idmap;
/**
* Constructor.
*
* @param size Size
* @param idmap ID map
*/
public ArrayIntegerStore(int size, DataStoreIDMap idmap) {
this(size, idmap, 0);
}
/**
* Constructor.
*
* @param size Size
* @param idmap ID map
* @param def Default value
*/
public ArrayIntegerStore(int size, DataStoreIDMap idmap, int def) {
super();
this.data = new int[size];
if(def != 0) {
Arrays.fill(this.data, def);
}
this.idmap = idmap;
}
@Override
@Deprecated
public Integer get(DBIDRef id) {
return Integer.valueOf(data[idmap.mapDBIDToOffset(id)]);
}
@Override
@Deprecated
public Integer put(DBIDRef id, Integer value) {
final int off = idmap.mapDBIDToOffset(id);
int ret = data[off];
data[off] = value.intValue();
return Integer.valueOf(ret);
}
@Override
public int intValue(DBIDRef id) {
return data[idmap.mapDBIDToOffset(id)];
}
@Override
public int putInt(DBIDRef id, int value) {
final int off = idmap.mapDBIDToOffset(id);
final int ret = data[off];
data[off] = value;
return ret;
}
@Override
public int put(DBIDRef id, int value) {
final int off = idmap.mapDBIDToOffset(id);
final int ret = data[off];
data[off] = value;
return ret;
}
@Override
public void increment(DBIDRef id, int adjust) {
final int off = idmap.mapDBIDToOffset(id);
data[off] += adjust;
}
@Override
public void destroy() {
data = null;
idmap = null;
}
@Override
public void delete(DBIDRef id) {
throw new UnsupportedOperationException("Can't delete from a static array storage.");
}
@Override
public String getLongName() {
return "raw";
}
@Override
public String getShortName() {
return "raw";
}
}
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