001/* 002// $Id: NullType.java 482 2012-01-05 23:27:27Z jhyde $ 003// 004// Licensed to Julian Hyde under one or more contributor license 005// agreements. See the NOTICE file distributed with this work for 006// additional information regarding copyright ownership. 007// 008// Julian Hyde licenses this file to you under the Apache License, 009// Version 2.0 (the "License"); you may not use this file except in 010// compliance with the License. You may obtain a copy of the License at: 011// 012// http://www.apache.org/licenses/LICENSE-2.0 013// 014// Unless required by applicable law or agreed to in writing, software 015// distributed under the License is distributed on an "AS IS" BASIS, 016// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 017// See the License for the specific language governing permissions and 018// limitations under the License. 019*/ 020package org.olap4j.type; 021 022/** 023 * The type of a null expression. 024 * 025 * @author medstat 026 * @version $Id: NullType.java 482 2012-01-05 23:27:27Z jhyde $ 027 * @since Aug 21, 2006 028 */ 029public class NullType extends ScalarType 030{ 031 /** 032 * Creates a null type. 033 */ 034 public NullType() { 035 } 036 037 public String toString() { 038 return "NULL"; 039 } 040} 041// End NullType.java