br.com.caelum.vraptor.converter.jodatime.LocalDateConverter.java Source code

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Here is the source code for br.com.caelum.vraptor.converter.jodatime.LocalDateConverter.java

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/***
 * 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.jodatime;

import static org.joda.time.format.DateTimeFormat.shortDate;

import java.text.MessageFormat;
import java.util.ResourceBundle;

import org.joda.time.DateTime;
import org.joda.time.LocalDate;

import br.com.caelum.vraptor.Convert;
import br.com.caelum.vraptor.Converter;
import br.com.caelum.vraptor.converter.ConversionError;
import br.com.caelum.vraptor.core.Localization;

/**
 * VRaptor converter for {@link LocalDate}. {@link LocalDate} is part of Joda Time library.
 * 
 * @author Lucas Cavalcanti
 */
@Convert(LocalDate.class)
public class LocalDateConverter implements Converter<LocalDate> {

    private final Localization localization;

    public LocalDateConverter(Localization localization) {
        this.localization = localization;
    }

    public LocalDate convert(String value, Class<? extends LocalDate> type, ResourceBundle bundle) {
        try {
            DateTime out = new LocaleBasedJodaTimeConverter(localization).convert(value, shortDate());
            if (out == null) {
                return null;
            }

            return out.toLocalDate();
        } catch (Exception e) {
            throw new ConversionError(MessageFormat.format(bundle.getString("is_not_a_valid_date"), value));
        }
    }
}