/* ========================================================================
* JCommon : a free general purpose class library for the Java(tm) platform
* ========================================================================
*
* (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jcommon/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.]
*
* --------------------------
* DateObjectDescription.java
* --------------------------
* (C)opyright 2003, 2004, by Thomas Morgner and Contributors.
*
* Original Author: Thomas Morgner;
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* $Id: DateObjectDescription.java,v 1.4 2005/11/14 11:01:31 mungady Exp $
*
* Changes (from 19-Feb-2003)
* -------------------------
* 19-Feb-2003 : Added standard header and Javadocs (DG);
* 29-Apr-2003 : Distilled from the JFreeReport project and moved into JCommon
*
*/
package org.jfree.xml.factory.objects;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
/**
* An object-description for a <code>Date</code> object.
*
* @author Thomas Morgner
*/
public class DateObjectDescription extends AbstractObjectDescription {
/**
* Creates a new object description.
*/
public DateObjectDescription() {
super(Date.class);
setParameterDefinition("year", Integer.class);
setParameterDefinition("month", Integer.class);
setParameterDefinition("day", Integer.class);
}
/**
* Creates an object based on this description.
*
* @return The object.
*/
public Object createObject() {
final int y = getIntParameter("year");
final int m = getIntParameter("month");
final int d = getIntParameter("day");
return new GregorianCalendar(y, m, d).getTime();
}
/**
* Returns a parameter value as an <code>int</code>.
*
* @param param the parameter name.
*
* @return The parameter value.
*/
private int getIntParameter(final String param) {
final Integer p = (Integer) getParameter(param);
if (p == null) {
return 0;
}
return p.intValue();
}
/**
* Sets the parameters of this description object to match the supplied object.
*
* @param o the object (should be an instance of <code>Date</code>).
*
* @throws ObjectFactoryException if the object is not an instance of <code>Date</code>.
*/
public void setParameterFromObject(final Object o) throws ObjectFactoryException {
if (o instanceof Date) {
final GregorianCalendar gc = new GregorianCalendar();
gc.setTime((Date) o);
final int year = gc.get(Calendar.YEAR);
final int month = gc.get(Calendar.MONTH);
final int day = gc.get(Calendar.DAY_OF_MONTH);
setParameter("year", new Integer(year));
setParameter("month", new Integer(month));
setParameter("day", new Integer(day));
}
else {
throw new ObjectFactoryException("Is no instance of java.util.Date");
}
}
}