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: LocaleValueConverter.java 3525 2007-10-16 11:43:48Z tmorgner $
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 java.util.Locale;
034    import java.util.StringTokenizer;
035    
036    /**
037     * Creation-Date: 24.01.2006, 19:19:03
038     *
039     * @author Thomas Morgner
040     */
041    public class LocaleValueConverter implements ValueConverter
042    {
043      public LocaleValueConverter()
044      {
045      }
046    
047      /**
048       * Converts an object to an attribute value.
049       *
050       * @param o the object.
051       * @return the attribute value.
052       * @throws BeanException if there was an error during the conversion.
053       */
054      public String toAttributeValue(final Object o) throws BeanException
055      {
056        final Locale l = (Locale) o;
057        if ("".equals(l.getCountry()))
058        {
059          return l.getLanguage();
060        }
061        else if ("".equals(l.getVariant()))
062        {
063          return l.getLanguage() + "_" + l.getCountry();
064        }
065        else
066        {
067          return l.getLanguage() + "_" + l.getCountry() + "_" + l.getVariant();
068        }
069      }
070    
071      /**
072       * Converts a string to a property value.
073       *
074       * @param s the string.
075       * @return a property value.
076       * @throws BeanException if there was an error during the conversion.
077       */
078      public Object toPropertyValue(final String s) throws BeanException
079      {
080        final StringTokenizer strtok = new StringTokenizer(s.trim(), "_");
081        if (strtok.hasMoreElements() == false)
082        {
083          throw new BeanException("This is no valid locale specification.");
084        }
085        final String language = strtok.nextToken();
086        String country = "";
087        if (strtok.hasMoreTokens())
088        {
089          country = strtok.nextToken();
090        }
091        String variant = "";
092        if (strtok.hasMoreTokens())
093        {
094          variant = strtok.nextToken();
095        }
096        return new Locale(language, country, variant);
097      }
098    }