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package de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.mtree;
/*
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 de.lmu.ifi.dbs.elki.database.relation.Relation;
import de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.AbstractMTreeFactory;
import de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.MTreeEntry;
import de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.MTreeSettings;
import de.lmu.ifi.dbs.elki.persistent.PageFile;
import de.lmu.ifi.dbs.elki.persistent.PageFileFactory;
import de.lmu.ifi.dbs.elki.utilities.Alias;
import de.lmu.ifi.dbs.elki.utilities.ClassGenericsUtil;
/**
* Factory for a M-Tree
*
* @author Erich Schubert
*
* @apiviz.stereotype factory
* @apiviz.uses MTreeIndex oneway - - «create»
*
* @param <O> Object type
*/
@Alias({ "mtree", "m" })
public class MTreeFactory<O> extends AbstractMTreeFactory<O, MTreeNode<O>, MTreeEntry, MTreeIndex<O>, MTreeSettings<O, MTreeNode<O>, MTreeEntry>> {
/**
* Constructor.
*
* @param pageFileFactory Data storage
* @param settings Tree settings
*/
public MTreeFactory(PageFileFactory<?> pageFileFactory, MTreeSettings<O, MTreeNode<O>, MTreeEntry> settings) {
super(pageFileFactory, settings);
}
@Override
public MTreeIndex<O> instantiate(Relation<O> relation) {
PageFile<MTreeNode<O>> pagefile = makePageFile(getNodeClass());
return new MTreeIndex<>(relation, pagefile, settings);
}
protected Class<MTreeNode<O>> getNodeClass() {
return ClassGenericsUtil.uglyCastIntoSubclass(MTreeNode.class);
}
/**
* Parameterization class.
*
* @author Erich Schubert
*
* @apiviz.exclude
*
* @param <O> Object type
*/
public static class Parameterizer<O> extends AbstractMTreeFactory.Parameterizer<O, MTreeNode<O>, MTreeEntry, MTreeSettings<O, MTreeNode<O>, MTreeEntry>> {
@Override
protected MTreeFactory<O> makeInstance() {
return new MTreeFactory<>(pageFileFactory, settings);
}
@Override
protected MTreeSettings<O, MTreeNode<O>, MTreeEntry> makeSettings() {
return new MTreeSettings<>();
}
}
}
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