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package de.lmu.ifi.dbs.elki.index.tree.metrical.mtreevariants.mktrees.mkcop;
/*
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.mktrees.MkTreeSettings;
import de.lmu.ifi.dbs.elki.persistent.PageFile;
import de.lmu.ifi.dbs.elki.persistent.PageFileFactory;
import de.lmu.ifi.dbs.elki.utilities.ClassGenericsUtil;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.OptionID;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.constraints.CommonConstraints;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameterization.Parameterization;
import de.lmu.ifi.dbs.elki.utilities.optionhandling.parameters.IntParameter;
/**
* Factory for a MkCoPTree-Tree
*
* @author Erich Schubert
* @since 0.4.0
*
* @apiviz.stereotype factory
* @apiviz.uses MkCoPTreeIndex oneway - - «create»
*
* @param <O> Object type
*/
public class MkCopTreeFactory<O> extends AbstractMTreeFactory<O, MkCoPTreeNode<O>, MkCoPEntry, MkCoPTreeIndex<O>, MkTreeSettings<O, MkCoPTreeNode<O>, MkCoPEntry>> {
/**
* Parameter for k
*/
public static final OptionID K_ID = new OptionID("mkcop.k", "positive integer specifying the maximum number k of reverse k nearest neighbors to be supported.");
/**
* Constructor.
*
* @param pageFileFactory Data storage
* @param settings Tree settings
*/
public MkCopTreeFactory(PageFileFactory<?> pageFileFactory, MkTreeSettings<O, MkCoPTreeNode<O>, MkCoPEntry> settings) {
super(pageFileFactory, settings);
}
@Override
public MkCoPTreeIndex<O> instantiate(Relation<O> relation) {
PageFile<MkCoPTreeNode<O>> pagefile = makePageFile(getNodeClass());
return new MkCoPTreeIndex<>(relation, pagefile, settings);
}
protected Class<MkCoPTreeNode<O>> getNodeClass() {
return ClassGenericsUtil.uglyCastIntoSubclass(MkCoPTreeNode.class);
}
/**
* Parameterization class.
*
* @author Erich Schubert
*
* @apiviz.exclude
*
* @param <O> Object type
*/
public static class Parameterizer<O> extends AbstractMTreeFactory.Parameterizer<O, MkCoPTreeNode<O>, MkCoPEntry, MkTreeSettings<O, MkCoPTreeNode<O>, MkCoPEntry>> {
@Override
protected void makeOptions(Parameterization config) {
super.makeOptions(config);
IntParameter k_maxP = new IntParameter(K_ID);
k_maxP.addConstraint(CommonConstraints.GREATER_EQUAL_ONE_INT);
if(config.grab(k_maxP)) {
settings.k_max = k_maxP.intValue();
}
}
@Override
protected MkCopTreeFactory<O> makeInstance() {
return new MkCopTreeFactory<>(pageFileFactory, settings);
}
@Override
protected MkTreeSettings<O, MkCoPTreeNode<O>, MkCoPEntry> makeSettings() {
return new MkTreeSettings<>();
}
}
}
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