com.zeroone.guestebook.DateFormatter.java Source code

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Here is the source code for com.zeroone.guestebook.DateFormatter.java

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/*
 * Copyright 2016 Erwin Mller <erwin.mueller@deventm.org>
 *
 * 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.zeroone.guestebook;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import org.springframework.context.MessageSource;
import org.springframework.format.Formatter;

/**
 * Formats date field for guesbook entries. Uses the
 * {@code "guestbook.date.format"} entry from the {@code messages.properties}.
 *
 * @author Erwin Mller, erwin.mueller@deventm.de
 * @since 1.0
 */
public class DateFormatter implements Formatter<Date> {

    private final MessageSource messageSource;

    public DateFormatter(MessageSource messageSource) {
        super();
        this.messageSource = messageSource;
    }

    @Override
    public Date parse(String text, Locale locale) throws ParseException {
        SimpleDateFormat dateFormat = createDateFormat(locale);
        return dateFormat.parse(text);
    }

    @Override
    public String print(Date object, Locale locale) {
        SimpleDateFormat dateFormat = createDateFormat(locale);
        return dateFormat.format(object);
    }

    private SimpleDateFormat createDateFormat(Locale locale) {
        String format;
        format = messageSource.getMessage("guestbook.date.format", null, locale);
        SimpleDateFormat dateFormat = new SimpleDateFormat(format);
        dateFormat.setLenient(false);
        return dateFormat;
    }

}