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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: * DateObjectDescription.java 29: * -------------------------- 30: * (C)opyright 2003, 2004, by Thomas Morgner and Contributors. 31: * 32: * Original Author: Thomas Morgner; 33: * Contributor(s): David Gilbert (for Object Refinery Limited); 34: * 35: * $Id: DateObjectDescription.java,v 1.4 2005/11/14 11:01:31 mungady Exp $ 36: * 37: * Changes (from 19-Feb-2003) 38: * ------------------------- 39: * 19-Feb-2003 : Added standard header and Javadocs (DG); 40: * 29-Apr-2003 : Distilled from the JFreeReport project and moved into JCommon 41: * 42: */ 43: 44: package org.jfree.xml.factory.objects; 45: 46: import java.util.Calendar; 47: import java.util.Date; 48: import java.util.GregorianCalendar; 49: 50: /** 51: * An object-description for a <code>Date</code> object. 52: * 53: * @author Thomas Morgner 54: */ 55: public class DateObjectDescription extends AbstractObjectDescription { 56: 57: /** 58: * Creates a new object description. 59: */ 60: public DateObjectDescription() { 61: super(Date.class); 62: setParameterDefinition("year", Integer.class); 63: setParameterDefinition("month", Integer.class); 64: setParameterDefinition("day", Integer.class); 65: } 66: 67: /** 68: * Creates an object based on this description. 69: * 70: * @return The object. 71: */ 72: public Object createObject() { 73: final int y = getIntParameter("year"); 74: final int m = getIntParameter("month"); 75: final int d = getIntParameter("day"); 76: 77: return new GregorianCalendar(y, m, d).getTime(); 78: } 79: 80: /** 81: * Returns a parameter value as an <code>int</code>. 82: * 83: * @param param the parameter name. 84: * 85: * @return The parameter value. 86: */ 87: private int getIntParameter(final String param) { 88: final Integer p = (Integer) getParameter(param); 89: if (p == null) { 90: return 0; 91: } 92: return p.intValue(); 93: } 94: 95: /** 96: * Sets the parameters of this description object to match the supplied object. 97: * 98: * @param o the object (should be an instance of <code>Date</code>). 99: * 100: * @throws ObjectFactoryException if the object is not an instance of <code>Date</code>. 101: */ 102: public void setParameterFromObject(final Object o) throws ObjectFactoryException { 103: if (o instanceof Date) { 104: final GregorianCalendar gc = new GregorianCalendar(); 105: gc.setTime((Date) o); 106: final int year = gc.get(Calendar.YEAR); 107: final int month = gc.get(Calendar.MONTH); 108: final int day = gc.get(Calendar.DAY_OF_MONTH); 109: 110: setParameter("year", new Integer(year)); 111: setParameter("month", new Integer(month)); 112: setParameter("day", new Integer(day)); 113: } 114: else { 115: throw new ObjectFactoryException("Is no instance of java.util.Date"); 116: } 117: 118: } 119: }