/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package br.com.caelum.vraptor.converter;
import static com.google.common.base.Strings.isNullOrEmpty;
import java.text.DateFormat;
import java.text.MessageFormat;
import java.text.ParseException;
import java.util.Date;
import java.util.Locale;
import java.util.ResourceBundle;
import br.com.caelum.vraptor.Convert;
import br.com.caelum.vraptor.Converter;
import br.com.caelum.vraptor.core.Localization;
import br.com.caelum.vraptor.ioc.RequestScoped;
/**
* Locale based date converter.
*
* @author Guilherme Silveira
*/
@Convert(Date.class)
@RequestScoped
public class LocaleBasedDateConverter
implements Converter<Date> {
private final Localization localization;
public LocaleBasedDateConverter(Localization localization) {
this.localization = localization;
}
public Date convert(String value, Class<? extends Date> type, ResourceBundle bundle) {
if (isNullOrEmpty(value)) {
return null;
}
Locale locale = localization.getLocale();
if (locale == null) {
locale = Locale.getDefault();
}
DateFormat formatDateTime = DateFormat.getDateTimeInstance(
DateFormat.MEDIUM, DateFormat.MEDIUM, locale);
try {
return formatDateTime.parse(value);
} catch (ParseException pe) {
DateFormat formatDate = DateFormat.getDateInstance(
DateFormat.SHORT, locale);
try {
return formatDate.parse(value);
} catch (ParseException pe1) {
throw new ConversionError(MessageFormat.format(
bundle.getString("is_not_a_valid_date"), value));
}
}
}
}