content: /*
     Portions Copyright (c) 2009-10 Zepheira LLC, Some Rights Reserved
     Portions Copyright (c) 2010-11 Talis Inc, Some Rights Reserved
  
     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at
  
         http://www.apache.org/licenses/LICENSE-2.0
  
     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
  
   */
  package org.callimachusproject.engine.events;
  
  import javax.xml.stream.Location;
  
  import org.callimachusproject.engine.model.VarOrTerm;
  
  /**
   * Groups a collection of events that are about the same subject.
   * 
   * @author James Leigh
   *
   */
  public class Subject extends RDFEvent {
  	private VarOrTerm subject;
  
  	public Subject(boolean start, VarOrTerm subject, Location location) {
  		super(start, location);
  		this.subject = subject;
  	}
  
  	public VarOrTerm getSubject() {
  		return subject;
  	}
  
  	public String toString() {
  		if (isStart())
  			return subject.toString();
  		return ".";
  	}
  
  }
  