Java tutorial
/* * Copyright (C) 2000 - 2008 TagServlet Ltd * * This file is part of Open BlueDragon (OpenBD) CFML Server Engine. * * OpenBD is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * Free Software Foundation,version 3. * * OpenBD is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with OpenBD. If not, see http://www.gnu.org/licenses/ * * Additional permission under GNU GPL version 3 section 7 * * If you modify this Program, or any covered work, by linking or combining * it with any of the JARS listed in the README.txt (or a modified version of * (that library), containing parts covered by the terms of that JAR, the * licensors of this Program grant you additional permission to convey the * resulting work. * README.txt @ http://www.openbluedragon.org/license/README.txt * * http://www.openbluedragon.org/ */ /* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jfreechart/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ---------------------------- * StandardPieURLGenerator.java * ---------------------------- * (C) Copyright 2002-2005, by Richard Atkinson and Contributors. * * Original Author: Richard Atkinson; * Contributors: David Gilbert (for Object Refinery Limited); * * $Id: PieURLGenerator.java,v 1.1 2008/05/09 09:49:24 openbd Exp $ * * Changes: * -------- * 05-Aug-2002 : Version 1, contributed by Richard Atkinson; * 09-Oct-2002 : Fixed errors reported by Checkstyle (DG); * 07-Mar-2003 : Modified to use KeyedValuesDataset and added pieIndex * parameter (DG); * 21-Mar-2003 : Implemented Serializable (DG); * 24-Apr-2003 : Switched around PieDataset and KeyedValuesDataset (DG); * 31-Mar-2004 : Added an optional 'pieIndex' parameter (DG); * 13-Jan-2005 : Fixed for compliance with XHTML 1.0 (DG): * */ package com.newatlanta.bluedragon; import java.io.Serializable; import java.net.URLEncoder; import java.text.DateFormat; import java.text.NumberFormat; import org.jfree.data.general.PieDataset; /** * A URL generator for pie charts. * * @author Richard Atkinson */ public class PieURLGenerator implements org.jfree.chart.urls.PieURLGenerator, Serializable { /** For serialization. */ private static final long serialVersionUID = 1L; /** The URL */ private String url; private String urlLower; private NumberFormat numberFormat; private DateFormat dateFormat; /** * Creates a new generator. * * @param prefix the prefix. */ public PieURLGenerator(String url, NumberFormat formatter) { if (url == null) { throw new IllegalArgumentException("Null 'url' argument."); } if (formatter == null) { throw new IllegalArgumentException("Null 'formatter' argument."); } this.url = url; this.urlLower = url.toLowerCase(); this.numberFormat = formatter; } public PieURLGenerator(String url, DateFormat formatter) { if (url == null) { throw new IllegalArgumentException("Null 'url' argument."); } if (formatter == null) { throw new IllegalArgumentException("Null 'formatter' argument."); } this.url = url; this.urlLower = url.toLowerCase(); this.dateFormat = formatter; } /** * Generates a URL. * * @param data the dataset. * @param key the item key. * @param pieIndex the pie index (ignored). * * @return A string containing the generated URL. */ @SuppressWarnings("deprecation") public String generateURL(PieDataset data, Comparable key, int pieIndex) { String categoryKey = key.toString(); Number numberValue = data.getValue(key); String value; if (numberValue == null) value = ""; else if (dateFormat != null) value = this.dateFormat.format(numberValue); else value = this.numberFormat.format(numberValue); StringBuilder generatedURL = new StringBuilder(urlLower.length()); for (int i = 0; i < urlLower.length();) { char ch = urlLower.charAt(i); if (ch == '$') { if (urlLower.regionMatches(i, "$serieslabel$", 0, "$serieslabel$".length())) { generatedURL.append(""); i = i + "$serieslabel$".length(); } else if (urlLower.regionMatches(i, "$itemlabel$", 0, "$itemlabel$".length())) { generatedURL.append(URLEncoder.encode(categoryKey)); i = i + "$itemlabel$".length(); } else if (urlLower.regionMatches(i, "$value$", 0, "$value$".length())) { generatedURL.append(URLEncoder.encode(value)); i = i + "$value$".length(); } else { // Preserve case by retrieving char from original URL generatedURL.append(url.charAt(i)); i++; } } else { // Preserve case by retrieving char from original URL generatedURL.append(url.charAt(i)); i++; } } return generatedURL.toString(); } /** * Tests if this object is equal to another. * * @param obj the object (<code>null</code> permitted). * * @return A boolean. */ public boolean equals(Object obj) { if (obj == null) { return false; } if (obj == this) { return true; } if ((obj instanceof PieURLGenerator) == false) { return false; } PieURLGenerator generator = (PieURLGenerator) obj; return this.url.equals(generator.url); } }