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

   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: LocaleValueConverter.java 3525 2007-10-16 11:43:48Z tmorgner $
  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 java.util.Locale;
  34: import java.util.StringTokenizer;
  35: 
  36: /**
  37:  * Creation-Date: 24.01.2006, 19:19:03
  38:  *
  39:  * @author Thomas Morgner
  40:  */
  41: public class LocaleValueConverter implements ValueConverter
  42: {
  43:   public LocaleValueConverter()
  44:   {
  45:   }
  46: 
  47:   /**
  48:    * Converts an object to an attribute value.
  49:    *
  50:    * @param o the object.
  51:    * @return the attribute value.
  52:    * @throws BeanException if there was an error during the conversion.
  53:    */
  54:   public String toAttributeValue(final Object o) throws BeanException
  55:   {
  56:     final Locale l = (Locale) o;
  57:     if ("".equals(l.getCountry()))
  58:     {
  59:       return l.getLanguage();
  60:     }
  61:     else if ("".equals(l.getVariant()))
  62:     {
  63:       return l.getLanguage() + "_" + l.getCountry();
  64:     }
  65:     else
  66:     {
  67:       return l.getLanguage() + "_" + l.getCountry() + "_" + l.getVariant();
  68:     }
  69:   }
  70: 
  71:   /**
  72:    * Converts a string to a property value.
  73:    *
  74:    * @param s the string.
  75:    * @return a property value.
  76:    * @throws BeanException if there was an error during the conversion.
  77:    */
  78:   public Object toPropertyValue(final String s) throws BeanException
  79:   {
  80:     final StringTokenizer strtok = new StringTokenizer(s.trim(), "_");
  81:     if (strtok.hasMoreElements() == false)
  82:     {
  83:       throw new BeanException("This is no valid locale specification.");
  84:     }
  85:     final String language = strtok.nextToken();
  86:     String country = "";
  87:     if (strtok.hasMoreTokens())
  88:     {
  89:       country = strtok.nextToken();
  90:     }
  91:     String variant = "";
  92:     if (strtok.hasMoreTokens())
  93:     {
  94:       variant = strtok.nextToken();
  95:     }
  96:     return new Locale(language, country, variant);
  97:   }
  98: }