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1   /*
2    * @(#) ZeroFilter.java Oct 26, 2004
3    * 
4    * Copyright (c) 2004 Delft University of Technology Jaffalaan 5, 2628 BX Delft,
5    * the Netherlands All rights reserved.
6    * 
7    * This software is proprietary information of Delft University of Technology
8    * The code is published under the General Public License
9    */
10  package nl.tudelft.simulation.language.filters;
11  
12  
13  /***
14   * The Zero filter does not filter any value.
15   * <p>
16   * (c) copyright 2004 <a href="http://www.simulation.tudelft.nl/dsol/">Delft
17   * University of Technology </a>, the Netherlands. <br>
18   * See for project information <a href="http://www.simulation.tudelft.nl/dsol/">
19   * www.simulation.tudelft.nl/dsol </a> <br>
20   * License of use: <a href="http://www.gnu.org/copyleft/gpl.html">General Public
21   * License (GPL) </a>, no warranty <br>
22   * 
23   * @author <a href="http://www.tbm.tudelft.nl/webstaf/peterja/index.htm"> Peter
24   *         Jacobs </a>
25   * @version 1.0 Oct 26, 2004
26   * @since 1.2
27   */
28  public class ZeroFilter extends AbstractFilter
29  {
30  	/***
31  	 * constructs a new ZeroFilte
32  	 */
33  	public ZeroFilter()
34  	{
35  		super();
36  	}
37  
38  	/***
39  	 * @see nl.tudelft.simulation.language.filters.AbstractFilter#filter(java.lang.Object)
40  	 * @return whether to accept the value; null values are accepted.
41  	 */
42  	protected boolean filter(final Object entry)
43  	{
44  		return true;
45  	}
46  
47  	/***
48  	 * @see nl.tudelft.simulation.language.filters.Filterinterface#getCriterium()
49  	 */
50  	public String getCriterium()
51  	{
52  		return "accepts every entry";
53  	}
54  }