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.algorithms.qtl.util.filters;
020
021import org.apache.jena.rdf.model.Statement;
022
023import java.util.Set;
024import java.util.function.Predicate;
025
026/**
027 * A filter that drops statements which contain
028 * subject, predicates and objects whose IRI starts with one of the given
029 * namespaces.
030 * @author Lorenz Buehmann
031 *
032 */
033public class NamespaceDropStatementFilter implements Predicate<Statement> {
034        
035        private Set<String> namespaces;
036
037        public NamespaceDropStatementFilter(Set<String> namespaces) {
038                this.namespaces = namespaces;
039        }
040
041        /* (non-Javadoc)
042         * @see org.apache.jena.util.iterator.Filter#accept(java.lang.Object)
043         */
044        @Override
045        public boolean test(Statement st) {
046//              return !(
047//                              namespaces.contains(st.getSubject().getNameSpace()) ||
048//                              namespaces.contains(st.getPredicate().getNameSpace()) ||
049//                              (st.getObject().isURIResource() && namespaces.contains(st.getObject().asResource().getNameSpace()))
050//                              );
051                for (String ns : namespaces) {
052                        if (st.getSubject().getURI().startsWith(ns) || st.getPredicate().getURI().startsWith(ns)
053                                        || st.getObject().isURIResource() && st.getObject().asResource().getURI().startsWith(ns)) {
054                                return false;
055                        }
056                }
057                return true;
058        }
059
060}