001/**
002 * Copyright (C) 2007 - 2016, Jens Lehmann
003 *
004 * This file is part of DL-Learner.
005 *
006 * DL-Learner is free software; you can redistribute it and/or modify
007 * it under the terms of the GNU General Public License as published by
008 * the Free Software Foundation; either version 3 of the License, or
009 * (at your option) any later version.
010 *
011 * DL-Learner is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014 * GNU General Public License for more details.
015 *
016 * You should have received a copy of the GNU General Public License
017 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
018 */
019package org.dllearner.kb.repository;
020
021import java.util.ArrayList;
022import java.util.Collection;
023import java.util.Collections;
024import java.util.List;
025
026public class OntologyRepositoryManager {
027        private static OntologyRepositoryManager instance;
028
029    private List<OntologyRepository> repositories;
030
031    private OntologyRepositoryManager() {
032        repositories = new ArrayList<>();
033    }
034
035    public static synchronized OntologyRepositoryManager getManager() {
036        if(instance == null) {
037            instance = new OntologyRepositoryManager();
038        }
039        return instance;
040    }
041
042    public void addRepository(OntologyRepository repository) {
043        repositories.add(repository);
044    }
045
046    public Collection<OntologyRepository> getOntologyRepositories() {
047        return Collections.unmodifiableList(repositories);
048    }
049}