001 /**
002 * GRANITE DATA SERVICES
003 * Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 * This file is part of the Granite Data Services Platform.
006 *
007 * Granite Data Services is free software; you can redistribute it and/or
008 * modify it under the terms of the GNU Lesser General Public
009 * License as published by the Free Software Foundation; either
010 * version 2.1 of the License, or (at your option) any later version.
011 *
012 * Granite Data Services is distributed in the hope that it will be useful,
013 * but WITHOUT ANY WARRANTY; without even the implied warranty of
014 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 * General Public License for more details.
016 *
017 * You should have received a copy of the GNU Lesser General Public
018 * License along with this library; if not, write to the Free Software
019 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 * USA, or see <http://www.gnu.org/licenses/>.
021 */
022 package org.granite.messaging.amf.io.convert.impl;
023
024 import java.lang.reflect.Type;
025 import java.util.Locale;
026 import java.util.regex.Pattern;
027
028 import org.granite.messaging.amf.io.convert.Converter;
029 import org.granite.messaging.amf.io.convert.Converters;
030 import org.granite.messaging.amf.io.convert.IllegalConverterArgumentException;
031 import org.granite.messaging.amf.io.convert.Reverter;
032
033 /**
034 * @author Franck WOLFF
035 */
036 public class String2Locale extends Converter implements Reverter {
037
038 private static final Pattern SPLITTER = Pattern.compile(Pattern.quote("_"));
039
040 public String2Locale(Converters converters) {
041 super(converters);
042 }
043
044 @Override
045 protected boolean internalCanConvert(Object value, Type targetType) {
046 return targetType.equals(Locale.class) && (value == null || value instanceof String);
047 }
048
049 @Override
050 protected Object internalConvert(Object value, Type targetType) {
051 if (value == null)
052 return null;
053 String[] tokens = SPLITTER.split((String)value, 3);
054 if (tokens.length == 1)
055 return new Locale(tokens[0]);
056 if (tokens.length == 2)
057 return new Locale(tokens[0], tokens[1]);
058 if (tokens.length == 3)
059 return new Locale(tokens[0], tokens[1], tokens[2]);
060 throw new IllegalConverterArgumentException(this, value, targetType, "Illegal Locale: " + value);
061 }
062
063 public boolean canRevert(Object value) {
064 return (value == null) || (value instanceof Locale);
065 }
066
067 public Object revert(Object value) {
068 if (value != null)
069 value = value.toString();
070 return value;
071 }
072 }