StringToLocalDateConverter.java

/*******************************************************************************
 * Copyright 2013 Thomas Letsch (contact@thomas-letsch.de)
 * 
 * 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 org.vaadin.addons.javaee.fields.converter;

import java.util.Locale;

import org.joda.time.LocalDate;
import org.joda.time.format.DateTimeFormat;

import com.vaadin.data.util.converter.Converter;

public class StringToLocalDateConverter implements Converter<String, LocalDate> {

    private static final long serialVersionUID = 1L;

    @Override
    public LocalDate convertToModel(String value, Class<? extends LocalDate> targetType, Locale locale)
            throws Converter.ConversionException {
        if (value == null) {
            return null;
        }
        return LocalDate.parse(value, DateTimeFormat.shortDate().withLocale(locale));
    }

    @Override
    public String convertToPresentation(LocalDate value, Class<? extends String> targetType, Locale locale)
            throws Converter.ConversionException {
        if (value == null) {
            return null;
        }
        return value.toString(DateTimeFormat.shortDate().withLocale(locale));
    }

    @Override
    public Class<LocalDate> getModelType() {
        return LocalDate.class;
    }

    @Override
    public Class<String> getPresentationType() {
        return String.class;
    }

}