content: // This file is part of AceWiki.
  // Copyright 2008-2013, AceWiki developers.
  // 
  // AceWiki is free software: you can redistribute it and/or modify it under the terms of the GNU
  // Lesser General Public License as published by the Free Software Foundation, either version 3 of
  // the License, or (at your option) any later version.
  // 
  // AceWiki 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
  // Lesser General Public License for more details.
  // 
  // You should have received a copy of the GNU Lesser General Public License along with AceWiki. If
  // not, see http://www.gnu.org/licenses/.
  
  package ch.uzh.ifi.attempto.acewiki.aceowl;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import ch.uzh.ifi.attempto.acewiki.core.InvalidWordException;
  import ch.uzh.ifi.attempto.acewiki.core.LanguageUtils;
  import ch.uzh.ifi.attempto.acewiki.core.LexiconChanger;
  import ch.uzh.ifi.attempto.acewiki.core.LexiconDetail;
  import ch.uzh.ifi.attempto.acewiki.core.Ontology;
  import ch.uzh.ifi.attempto.acewiki.core.OntologyElement;
  import ch.uzh.ifi.attempto.ape.FunctionWords;
  
  /**
   * This class is used to modify or create of-constructs.
   * 
   * @author Tobias Kuhn
   */
  public class NounOfChanger implements LexiconChanger {
  	
  	public String getDescription() {
  		return "Every of-construct represents a certain relation between things. " +
  			"For example, the of-construct \"child of\" relates persons to their " +
  			"parents. Every of-construct consists of a noun plus the preposition " +
  			"\"of\".";
  	}
  	
  	public List<LexiconDetail> getDetails(OntologyElement el) {
  		OfRelation relation = (OfRelation) el;
  		List<LexiconDetail> l = new ArrayList<LexiconDetail>();
  		l.add(new LexiconDetail(
  				"noun",
  				"examples: part, child, owner",
  				relation.getNoun()
  			));
  		return l;
  	}
  	
  	public void save(OntologyElement el, int wordNumber, List<Object> newValues, Ontology ontology)
  			throws InvalidWordException {
  		OfRelation relation = (OfRelation) el;
  		String name = ACEOWLLexicon.normalize((String) newValues.get(0));
  		if (name.toLowerCase().endsWith("_of")) {
  			name = name.substring(0, name.length()-3);
  		}
  		String nameP = LanguageUtils.getPrettyPrinted(name);
  		
  		if (name.equals("")) {
  			throw new InvalidWordException("No noun defined: Please specify the singular form " +
  				"of a noun.");
  		}
  		if (!ACEOWLLexicon.isValidWordOrEmpty(name)) {
  			throw new InvalidWordException("Invalid character: Only a-z, A-Z, 0-9, -, and " +
  				"spaces are allowed, and the first character must be one of a-z A-Z.");
  		}
  		if (FunctionWords.isFunctionWord(name)) {
  			throw new InvalidWordException("'" + nameP + "' is a predefined word and cannot be " +
  				"used here.");
  		}
  		OntologyElement oe = ontology.getElement(name + " of");
  		if (oe != null && oe != relation) {
  			throw new InvalidWordException("The word '" + nameP + "' is already used. Please " +
  				"use a different one.");
  		}
  		ontology.change(relation, name);
  	}
  
  }
  