001 //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.3_testing/src/org/deegree/model/filterencoding/FalseFilter.java $
002 /*----------------------------------------------------------------------------
003 This file is part of deegree, http://deegree.org/
004 Copyright (C) 2001-2009 by:
005 Department of Geography, University of Bonn
006 and
007 lat/lon GmbH
008
009 This library is free software; you can redistribute it and/or modify it under
010 the terms of the GNU Lesser General Public License as published by the Free
011 Software Foundation; either version 2.1 of the License, or (at your option)
012 any later version.
013 This library is distributed in the hope that it will be useful, but WITHOUT
014 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
015 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
016 details.
017 You should have received a copy of the GNU Lesser General Public License
018 along with this library; if not, write to the Free Software Foundation, Inc.,
019 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
020
021 Contact information:
022
023 lat/lon GmbH
024 Aennchenstr. 19, 53177 Bonn
025 Germany
026 http://lat-lon.de/
027
028 Department of Geography, University of Bonn
029 Prof. Dr. Klaus Greve
030 Postfach 1147, 53001 Bonn
031 Germany
032 http://www.geographie.uni-bonn.de/deegree/
033
034 e-mail: info@deegree.org
035 ----------------------------------------------------------------------------*/
036 package org.deegree.model.filterencoding;
037
038 import org.deegree.model.feature.Feature;
039
040 /**
041 * A {@link Filter} that always evaluates to false.
042 *
043 * @author <a href="mailto:schneider@lat-lon.de">Markus Schneider</a>
044 * @author last edited by: $Author: mschneider $
045 *
046 * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
047 */
048 public class FalseFilter implements Filter {
049
050 /**
051 * Calculates the <tt>Filter</tt>'s logical value (false).
052 * <p>
053 *
054 * @param feature
055 * (in this special case irrelevant)
056 * @return false (always)
057 */
058 public boolean evaluate( Feature feature ) {
059 return false;
060 }
061
062 public StringBuffer toXML() {
063 StringBuffer sb = new StringBuffer();
064 sb.append( "<ogc:Filter xmlns:ogc='http://www.opengis.net/ogc'>" );
065 sb.append( "<False/>" );
066 sb.append( "</ogc:Filter>\n" );
067 return sb;
068 }
069
070 public StringBuffer to100XML() {
071 return toXML();
072 }
073
074 public StringBuffer to110XML() {
075 return toXML();
076 }
077 }