001/**
002 *
003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved.
004 *
005 * This library is free software; you can redistribute it and/or
006 * modify it under the terms of the GNU Lesser General Public
007 * License as published by the Free Software Foundation; either 
008 * version 2.1 of the License, or (at your option) any later version.
009 * 
010 * This library is distributed in the hope that it will be useful,
011 * but WITHOUT ANY WARRANTY; without even the implied warranty of
012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
013 * Lesser General Public License for more details.
014 * 
015 * You should have received a copy of the GNU Lesser General Public 
016 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
017 * 
018 **/
019package lucee.runtime.sql.exp.value;
020
021import lucee.runtime.sql.exp.Literal;
022
023
024public class ValueNull extends ValueSupport implements Literal {
025
026        public static final ValueNull NULL = new ValueNull();
027        
028        //private boolean value;
029
030        private ValueNull() {
031                super("NULL");
032        }
033
034        @Override
035        public String toString(boolean noAlias) {
036                if(noAlias || getIndex()==0)return getString();
037                return getString()+" as "+getAlias();
038        }
039
040        public Object getValue() {
041                return null;
042        }
043}