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.core;
  
  
  /**
   * This is a partial implementation of an ontology element.
   * 
   * @author Tobias Kuhn
   */
  public abstract class AbstractOntologyElement implements OntologyElement {
  	
  	private Ontology ontology;
  	private Article article;
  	
  	private long id = -1;
  	
  	public void initId(long id) {
  		this.id = id;
  	}
  	
  	public void initOntology(Ontology ontology) {
  		if (this.ontology != null && this.ontology != ontology) {
  			throw new RuntimeException("Cannot change the ontology for element " + toString());
  		}
  		this.ontology = ontology;
  	}
  	
  	public void initArticle(Article article) {
  		this.article = article;
  	}
  	
  	public String getWord(int n) {
  		return getWords()[n];
  	}
  	
  	public String getWord() {
  		return getWord(0);
  	}
  	
  	public String[] getHeadwords() {
  		return new String[] {getWord(0)};
  	}
  	
  	public long getId() {
  		return id;
  	}
  	
  	public Ontology getOntology() {
  		return ontology;
  	}
  	
  	public Article getArticle() {
  		if (article == null) {
  			article = new Article(this);
  		}
  		return article;
  	}
  	
  	/**
  	 * Writes the text to the log file.
  	 * 
  	 * @param text The text to be written to the log file.
  	 */
  	protected void log(String text) {
  		if (ontology != null) {
  			ontology.log(text);
  		}
  	}
  	
  	public String toString() {
  		return getInternalType() + ":" + serializeWords();
  	}
  
  }
  