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1: /* ======================================================================== 2: * JCommon : a free general purpose class library for the Java(tm) platform 3: * ======================================================================== 4: * 5: * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 6: * 7: * Project Info: http://www.jfree.org/jcommon/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: * TableOrder.java 29: * --------------- 30: * (C) Copyright 2004, 2005, by Object Refinery Limited. 31: * 32: * Original Author: David Gilbert (for Object Refinery Limited); 33: * Contributor(s): -; 34: * 35: * $Id: TableOrder.java,v 1.5 2005/10/18 13:24:19 mungady Exp $ 36: * 37: * Changes: 38: * -------- 39: * 29-Jan-2004 : Version 1 (DG); 40: * 41: */ 42: 43: package org.jfree.util; 44: 45: import java.io.ObjectStreamException; 46: import java.io.Serializable; 47: 48: /** 49: * Used to indicate the processing order for a table (by row or by column). 50: * 51: * @author David Gilbert 52: */ 53: public final class TableOrder implements Serializable { 54: 55: /** For serialization. */ 56: private static final long serialVersionUID = 525193294068177057L; 57: 58: /** By row. */ 59: public static final TableOrder BY_ROW = new TableOrder("TableOrder.BY_ROW"); 60: 61: /** By column. */ 62: public static final TableOrder BY_COLUMN 63: = new TableOrder("TableOrder.BY_COLUMN"); 64: 65: /** The name. */ 66: private String name; 67: 68: /** 69: * Private constructor. 70: * 71: * @param name the name. 72: */ 73: private TableOrder(String name) { 74: this.name = name; 75: } 76: 77: /** 78: * Returns a string representing the object. 79: * 80: * @return The string. 81: */ 82: public String toString() { 83: return this.name; 84: } 85: 86: /** 87: * Returns <code>true</code> if this object is equal to the specified 88: * object, and <code>false</code> otherwise. 89: * 90: * @param obj the other object. 91: * 92: * @return A boolean. 93: */ 94: public boolean equals(Object obj) { 95: if (this == obj) { 96: return true; 97: } 98: if (!(obj instanceof TableOrder)) { 99: return false; 100: } 101: TableOrder that = (TableOrder) obj; 102: if (!this.name.equals(that.name)) { 103: return false; 104: } 105: return true; 106: } 107: 108: /** 109: * Returns a hash code value for the object. 110: * 111: * @return The hashcode 112: */ 113: public int hashCode() { 114: return this.name.hashCode(); 115: } 116: 117: /** 118: * Ensures that serialization returns the unique instances. 119: * 120: * @return The object. 121: * 122: * @throws ObjectStreamException if there is a problem. 123: */ 124: private Object readResolve() throws ObjectStreamException { 125: if (this.equals(TableOrder.BY_ROW)) { 126: return TableOrder.BY_ROW; 127: } 128: else if (this.equals(TableOrder.BY_COLUMN)) { 129: return TableOrder.BY_COLUMN; 130: } 131: return null; 132: } 133: 134: }