001 /* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jfreechart/index.html 008 * 009 * This library is free software; you can redistribute it and/or modify it 010 * under the terms of the GNU Lesser General Public License as published by 011 * the Free Software Foundation; either version 2.1 of the License, or 012 * (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but 015 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 016 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 017 * License for more details. 018 * 019 * You should have received a copy of the GNU Lesser General Public 020 * License along with this library; if not, write to the Free Software 021 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 022 * USA. 023 * 024 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 025 * in the United States and other countries.] 026 * 027 * -------------- 028 * RangeType.java 029 * -------------- 030 * (C) Copyright 2005, by Object Refinery Limited. 031 * 032 * Original Author: David Gilbert (for Object Refinery Limited); 033 * Contributor(s): -; 034 * 035 * $Id: RangeType.java,v 1.2.2.1 2005/10/25 21:29:13 mungady Exp $ 036 * 037 * Changes: 038 * -------- 039 * 24-Feb-2005 : Version 1 (DG); 040 * 041 */ 042 043 package org.jfree.data; 044 045 import java.io.ObjectStreamException; 046 import java.io.Serializable; 047 048 /** 049 * Used to indicate the type of range to display on an axis (full, positive or 050 * negative). 051 */ 052 public final class RangeType implements Serializable { 053 054 /** For serialization. */ 055 private static final long serialVersionUID = -9073319010650549239L; 056 057 /** Full range (positive and negative). */ 058 public static final RangeType FULL = new RangeType("RangeType.FULL"); 059 060 /** Positive range. */ 061 public static final RangeType POSITIVE 062 = new RangeType("RangeType.POSITIVE"); 063 064 /** Negative range. */ 065 public static final RangeType NEGATIVE 066 = new RangeType("RangeType.NEGATIVE"); 067 068 /** The name. */ 069 private String name; 070 071 /** 072 * Private constructor. 073 * 074 * @param name the name. 075 */ 076 private RangeType(String name) { 077 this.name = name; 078 } 079 080 /** 081 * Returns a string representing the object. 082 * 083 * @return The string. 084 */ 085 public String toString() { 086 return this.name; 087 } 088 089 /** 090 * Returns <code>true</code> if this object is equal to the specified 091 * object, and <code>false</code> otherwise. 092 * 093 * @param obj the other object. 094 * 095 * @return A boolean. 096 */ 097 public boolean equals(Object obj) { 098 099 if (this == obj) { 100 return true; 101 } 102 if (!(obj instanceof RangeType)) { 103 return false; 104 } 105 RangeType that = (RangeType) obj; 106 if (!this.name.equals(that.toString())) { 107 return false; 108 } 109 return true; 110 } 111 112 /** 113 * Returns a hash code value for the object. 114 * 115 * @return The hashcode 116 */ 117 public int hashCode() { 118 return this.name.hashCode(); 119 } 120 121 /** 122 * Ensures that serialization returns the unique instances. 123 * 124 * @return The object. 125 * 126 * @throws ObjectStreamException if there is a problem. 127 */ 128 private Object readResolve() throws ObjectStreamException { 129 if (this.equals(RangeType.FULL)) { 130 return RangeType.FULL; 131 } 132 else if (this.equals(RangeType.POSITIVE)) { 133 return RangeType.POSITIVE; 134 } 135 else if (this.equals(RangeType.NEGATIVE)) { 136 return RangeType.NEGATIVE; 137 } 138 return null; 139 } 140 141 }