001    /*
002     * 
003     * $Revision: 13085 $ $Date: 2008-02-06 18:27:24 +0100 (Mi, 06 Feb 2008) $
004     *
005     * This file is part of ***  M y C o R e  ***
006     * See http://www.mycore.de/ for details.
007     *
008     * This program is free software; you can use it, redistribute it
009     * and / or modify it under the terms of the GNU General Public License
010     * (GPL) as published by the Free Software Foundation; either version 2
011     * of the License or (at your option) any later version.
012     *
013     * This program is distributed in the hope that it will be useful, but
014     * WITHOUT ANY WARRANTY; without even the implied warranty of
015     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
016     * GNU General Public License for more details.
017     *
018     * You should have received a copy of the GNU General Public License
019     * along with this program, in a file called gpl.txt or license.txt.
020     * If not, write to the Free Software Foundation Inc.,
021     * 59 Temple Place - Suite 330, Boston, MA  02111-1307 USA
022     */
023    
024    package org.mycore.parsers.bool;
025    
026    import org.jdom.Attribute;
027    import org.jdom.Element;
028    
029    /**
030     * Implementation of the boolean "false" primitive
031     * 
032     * @author Matthias Kramm
033     */
034    public class MCRFalseCondition implements MCRCondition {
035        public MCRFalseCondition() {
036        }
037    
038        public boolean evaluate(Object o) {
039            return false;
040        }
041    
042        public String toString() {
043            return "false";
044        }
045    
046        public Element toXML() {
047            Element cond = new Element("boolean");
048            cond.setAttribute("operator", "false");
049            return cond;
050        }
051    
052        public Element info() {
053            Element el = new Element("info");
054            el.setAttribute(new Attribute("type", "false"));
055    
056            return el;
057        }
058    
059        public void accept(MCRConditionVisitor visitor) {
060            visitor.visitType(info());
061        }
062    };