/*
 * Copyright 2000-2013 Vaadin Ltd.
 * 
 * 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 com.vaadin.data.util.converter;

import java.util.Date;
import java.util.Locale;

/**
 * Converter for handling conversion between {@link java.util.Date} and
 * {@link java.sql.Date}. This is used when a PopupDateField or InlineDateField
 * is connected to a java.sql.Date property, typically through a JPAContainer or
 * SQLContainer. Note that information (time information) is lost when
 * converting from {@link java.util.Date} to {@link java.sql.Date}.
 * 
 * @since 7.1
 * @author Vaadin Ltd
 */
public class DateToSqlDateConverter implements Converter<Date, java.sql.Date> {

    @Override
    public java.sql.Date convertToModel(Date value,
            Class<? extends java.sql.Date> targetType, Locale locale)
            throws ConversionException {
        if (targetType != getModelType()) {
            throw new ConversionException("Converter only supports "
                    + getModelType().getName() + " (targetType was "
                    + targetType.getName() + ")");
        }

        if (value == null) {
            return null;
        }

        return new java.sql.Date(value.getTime());
    }

    @Override
    public Date convertToPresentation(java.sql.Date value,
            Class<? extends Date> targetType, Locale locale)
            throws ConversionException {
        if (targetType != getPresentationType()) {
            throw new ConversionException("Converter only supports "
                    + getPresentationType().getName() + " (targetType was "
                    + targetType.getName() + ")");
        }

        if (value == null) {
            return null;
        }

        return new Date(value.getTime());
    }

    @Override
    public Class<java.sql.Date> getModelType() {
        return java.sql.Date.class;
    }

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

}
