001 /* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2008, 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 2005-2008, by Object Refinery Limited. 031 * 032 * Original Author: David Gilbert (for Object Refinery Limited); 033 * Contributor(s): -; 034 * 035 * Changes: 036 * -------- 037 * 24-Feb-2005 : Version 1 (DG); 038 * 039 */ 040 041 package org.jfree.data; 042 043 import java.io.ObjectStreamException; 044 import java.io.Serializable; 045 046 /** 047 * Used to indicate the type of range to display on an axis (full, positive or 048 * negative). 049 */ 050 public final class RangeType implements Serializable { 051 052 /** For serialization. */ 053 private static final long serialVersionUID = -9073319010650549239L; 054 055 /** Full range (positive and negative). */ 056 public static final RangeType FULL = new RangeType("RangeType.FULL"); 057 058 /** Positive range. */ 059 public static final RangeType POSITIVE 060 = new RangeType("RangeType.POSITIVE"); 061 062 /** Negative range. */ 063 public static final RangeType NEGATIVE 064 = new RangeType("RangeType.NEGATIVE"); 065 066 /** The name. */ 067 private String name; 068 069 /** 070 * Private constructor. 071 * 072 * @param name the name. 073 */ 074 private RangeType(String name) { 075 this.name = name; 076 } 077 078 /** 079 * Returns a string representing the object. 080 * 081 * @return The string. 082 */ 083 public String toString() { 084 return this.name; 085 } 086 087 /** 088 * Returns <code>true</code> if this object is equal to the specified 089 * object, and <code>false</code> otherwise. 090 * 091 * @param obj the other object. 092 * 093 * @return A boolean. 094 */ 095 public boolean equals(Object obj) { 096 097 if (this == obj) { 098 return true; 099 } 100 if (!(obj instanceof RangeType)) { 101 return false; 102 } 103 RangeType that = (RangeType) obj; 104 if (!this.name.equals(that.toString())) { 105 return false; 106 } 107 return true; 108 } 109 110 /** 111 * Returns a hash code value for the object. 112 * 113 * @return The hashcode 114 */ 115 public int hashCode() { 116 return this.name.hashCode(); 117 } 118 119 /** 120 * Ensures that serialization returns the unique instances. 121 * 122 * @return The object. 123 * 124 * @throws ObjectStreamException if there is a problem. 125 */ 126 private Object readResolve() throws ObjectStreamException { 127 if (this.equals(RangeType.FULL)) { 128 return RangeType.FULL; 129 } 130 else if (this.equals(RangeType.POSITIVE)) { 131 return RangeType.POSITIVE; 132 } 133 else if (this.equals(RangeType.NEGATIVE)) { 134 return RangeType.NEGATIVE; 135 } 136 return null; 137 } 138 139 }