Source for org.jfree.report.util.beans.ClassValueConverter

   1: /**
   2:  * ========================================
   3:  * JFreeReport : a free Java report library
   4:  * ========================================
   5:  *
   6:  * Project Info:  http://reporting.pentaho.org/
   7:  *
   8:  * (C) Copyright 2000-2007, by Object Refinery Limited, Pentaho Corporation and Contributors.
   9:  *
  10:  * This library is free software; you can redistribute it and/or modify it under the terms
  11:  * of the GNU Lesser General Public License as published by the Free Software Foundation;
  12:  * either version 2.1 of the License, or (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  15:  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16:  * See the GNU Lesser General Public License for more details.
  17:  *
  18:  * You should have received a copy of the GNU Lesser General Public License along with this
  19:  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  20:  * Boston, MA 02111-1307, USA.
  21:  *
  22:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
  23:  * in the United States and other countries.]
  24:  *
  25:  * ------------
  26:  * $Id: ClassValueConverter.java 2725 2007-04-01 18:49:29Z taqua $
  27:  * ------------
  28:  * (C) Copyright 2000-2005, by Object Refinery Limited.
  29:  * (C) Copyright 2005-2007, by Pentaho Corporation.
  30:  */
  31: package org.jfree.report.util.beans;
  32: 
  33: import org.jfree.util.ObjectUtilities;
  34: 
  35: /**
  36:  * A class that handles the conversion of {@link Integer} attributes to and from their
  37:  * {@link String} representation.
  38:  *
  39:  * @author Thomas Morgner
  40:  */
  41: public class ClassValueConverter implements ValueConverter
  42: {
  43:   public ClassValueConverter ()
  44:   {
  45:   }
  46: 
  47:   public String toAttributeValue (final Object o)
  48:   {
  49:     if (o instanceof Class)
  50:     {
  51:       final Class c = (Class) o;
  52:       return c.getName();
  53:     }
  54:     throw new ClassCastException("Give me a real type.");
  55:   }
  56: 
  57:   public Object toPropertyValue (final String s)
  58:   {
  59:     try
  60:     {
  61:       final ClassLoader loader = ObjectUtilities.getClassLoader(ClassValueConverter.class);
  62:       return loader.loadClass(s);
  63:     }
  64:     catch (ClassNotFoundException e)
  65:     {
  66:       throw new IllegalArgumentException("No such class.");
  67:     }
  68:   }
  69: }