001/* -*- mode: Java; c-basic-offset: 2; indent-tabs-mode: nil; coding: utf-8-unix -*-
002 *
003 * Copyright © 2020 microBean™.
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
014 * implied.  See the License for the specific language governing
015 * permissions and limitations under the License.
016 */
017package org.microbean.settings.converter;
018
019import java.time.Instant;
020
021import java.util.Date;
022
023import javax.enterprise.context.ApplicationScoped;
024
025import org.microbean.settings.Converter;
026import org.microbean.settings.Value;
027
028@ApplicationScoped
029public class DateConverter implements Converter<Date> {
030
031  private static final long serialVersionUID = 1L;
032
033  private final InstantConverter delegate;
034  
035  public DateConverter() {
036    super();
037    this.delegate = new InstantConverter();
038  }
039
040  @Override
041  public Date convert(final Value value) {
042    final Date returnValue;
043    if (value == null) {
044      returnValue = null;
045    } else {
046      final String stringValue = value.get();
047      if (stringValue == null) {
048        returnValue = null;
049      } else {
050        final Instant instant = this.delegate.convert(value);
051        if (instant == null) {
052          returnValue = null;
053        } else {
054          returnValue = Date.from(instant);
055        }
056      }
057    }
058    return returnValue;
059  }
060
061}