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1: /* =========================================================== 2: * JFreeChart : a free chart library for the Java(tm) platform 3: * =========================================================== 4: * 5: * (C) Copyright 2000-2007, by Object Refinery Limited and Contributors. 6: * 7: * Project Info: http://www.jfree.org/jfreechart/index.html 8: * 9: * This library is free software; you can redistribute it and/or modify it 10: * under the terms of the GNU Lesser General Public License as published by 11: * the Free Software Foundation; either version 2.1 of the License, or 12: * (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but 15: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17: * License for more details. 18: * 19: * You should have received a copy of the GNU Lesser General Public 20: * License along with this library; if not, write to the Free Software 21: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22: * USA. 23: * 24: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 25: * in the United States and other countries.] 26: * 27: * -------------- 28: * RangeType.java 29: * -------------- 30: * (C) Copyright 2005-2007, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * Changes: 36: * -------- 37: * 24-Feb-2005 : Version 1 (DG); 38: * 39: */ 40: 41: package org.jfree.data; 42: 43: import java.io.ObjectStreamException; 44: import java.io.Serializable; 45: 46: /** 47: * Used to indicate the type of range to display on an axis (full, positive or 48: * negative). 49: */ 50: public final class RangeType implements Serializable { 51: 52: /** For serialization. */ 53: private static final long serialVersionUID = -9073319010650549239L; 54: 55: /** Full range (positive and negative). */ 56: public static final RangeType FULL = new RangeType("RangeType.FULL"); 57: 58: /** Positive range. */ 59: public static final RangeType POSITIVE 60: = new RangeType("RangeType.POSITIVE"); 61: 62: /** Negative range. */ 63: public static final RangeType NEGATIVE 64: = new RangeType("RangeType.NEGATIVE"); 65: 66: /** The name. */ 67: private String name; 68: 69: /** 70: * Private constructor. 71: * 72: * @param name the name. 73: */ 74: private RangeType(String name) { 75: this.name = name; 76: } 77: 78: /** 79: * Returns a string representing the object. 80: * 81: * @return The string. 82: */ 83: public String toString() { 84: return this.name; 85: } 86: 87: /** 88: * Returns <code>true</code> if this object is equal to the specified 89: * object, and <code>false</code> otherwise. 90: * 91: * @param obj the other object. 92: * 93: * @return A boolean. 94: */ 95: public boolean equals(Object obj) { 96: 97: if (this == obj) { 98: return true; 99: } 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: }