001 /**
002 * ========================================
003 * JFreeReport : a free Java report library
004 * ========================================
005 *
006 * Project Info: http://reporting.pentaho.org/
007 *
008 * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
009 *
010 * This library is free software; you can redistribute it and/or modify it under the terms
011 * of the GNU Lesser General Public License as published by the Free Software Foundation;
012 * either version 2.1 of the License, or (at your option) any later version.
013 *
014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016 * See the GNU Lesser General Public License for more details.
017 *
018 * You should have received a copy of the GNU Lesser General Public License along with this
019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020 * Boston, MA 02111-1307, USA.
021 *
022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023 * in the United States and other countries.]
024 *
025 * ------------
026 * $Id: ClassValueConverter.java,v 1.8 2007/04/01 18:49:34 taqua Exp $
027 * ------------
028 * (C) Copyright 2000-2005, by Object Refinery Limited.
029 * (C) Copyright 2005-2007, by Pentaho Corporation.
030 */
031 package org.jfree.report.util.beans;
032
033 import org.jfree.util.ObjectUtilities;
034
035 /**
036 * A class that handles the conversion of {@link Integer} attributes to and from their
037 * {@link String} representation.
038 *
039 * @author Thomas Morgner
040 */
041 public class ClassValueConverter implements ValueConverter
042 {
043 public ClassValueConverter ()
044 {
045 }
046
047 public String toAttributeValue (final Object o)
048 {
049 if (o instanceof Class)
050 {
051 final Class c = (Class) o;
052 return c.getName();
053 }
054 throw new ClassCastException("Give me a real type.");
055 }
056
057 public Object toPropertyValue (final String s)
058 {
059 try
060 {
061 final ClassLoader loader = ObjectUtilities.getClassLoader(ClassValueConverter.class);
062 return loader.loadClass(s);
063 }
064 catch (ClassNotFoundException e)
065 {
066 throw new IllegalArgumentException("No such class.");
067 }
068 }
069 }