content: /*
     Copyright (c) 2011 3 round Stones 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 java.util.Collection;
  
  import javax.xml.stream.Location;
  
  import org.callimachusproject.engine.model.Var;
  
  public class OrderBy extends RDFEvent {
  	private Collection<Var> vars;
  
  	public OrderBy(Collection<Var> vars, Location location) {
  		super(location);
  		assert vars != null && !vars.isEmpty();
  		this.vars = vars;
  	}
  
  	public String toString() {
  		StringBuilder sb = new StringBuilder();
  		sb.append("ORDER BY");
  		for (Var var : vars) {
  			sb.append(" ");
  			sb.append(var);
  		}
  		return sb.toString();
  	}
  }
  