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}