001 /***************************************************************************/
002 /* Copyright (C) 2010-2011, Sebastian Hellmann */
003 /* Note: If you need parts of NLP2RDF in another licence due to licence */
004 /* incompatibility, please mail hellmann@informatik.uni-leipzig.de */
005 /* */
006 /* This file is part of NLP2RDF. */
007 /* */
008 /* NLP2RDF is free software; you can redistribute it and/or modify */
009 /* it under the terms of the GNU General Public License as published by */
010 /* the Free Software Foundation; either version 3 of the License, or */
011 /* (at your option) any later version. */
012 /* */
013 /* NLP2RDF is distributed in the hope that it will be useful, */
014 /* but WITHOUT ANY WARRANTY; without even the implied warranty of */
015 /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
016 /* GNU General Public License for more details. */
017 /* */
018 /* You should have received a copy of the GNU General Public License */
019 /* along with this program. If not, see <http://www.gnu.org/licenses/>. */
020 /***************************************************************************/
021
022 package org.nlp2rdf.implementation.snowball;
023
024 import com.hp.hpl.jena.ontology.OntModel;
025 import org.nlp2rdf.webservice.NIFParameters;
026 import org.nlp2rdf.webservice.NIFServlet;
027 import org.slf4j.Logger;
028 import org.slf4j.LoggerFactory;
029
030 public class NIFStemmer extends NIFServlet {
031 private static Logger log = LoggerFactory.getLogger(NIFStemmer.class);
032
033 @Override
034 public void execute(NIFParameters nifParameters, OntModel diff) throws Exception {
035
036 String stemmer = (nifParameters.getParameterMap().get("stemmer") == null) ? "PorterStemmer" : nifParameters.getParameterMap().get("stemmer");
037 SnowballStemmer ss = new SnowballStemmer(stemmer);
038
039 if (nifParameters.getInputModel().size() == 0) {
040 ss.processText(nifParameters.getPrefix(), nifParameters.getUriRecipe(), nifParameters.getText(), diff);
041 } else {
042 ss.execute(nifParameters.getInputModel(), diff);
043 }
044 log.debug("returning " + diff.size() + " triples");
045 }
046
047
048 }