001/* -*- mode: Java; c-basic-offset: 2; indent-tabs-mode: nil; coding: utf-8-unix -*- 002 * 003 * Copyright © 2017 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.configuration.spi.converter; 018 019import java.time.Instant; 020 021import java.util.Calendar; 022 023import org.microbean.configuration.spi.Converter; 024 025public final class StringToCalendarConverter extends Converter<Calendar> { 026 027 private static final long serialVersionUID = 1L; 028 029 private static final StringToInstantConverter stringToInstantConverter = new StringToInstantConverter(); 030 031 @Override 032 public final Calendar convert(final String value) { 033 final Instant instant = stringToInstantConverter.convert(value); 034 final Calendar returnValue; 035 if (instant == null) { 036 returnValue = null; 037 } else { 038 returnValue = Calendar.getInstance(); 039 assert returnValue != null; 040 returnValue.setTimeInMillis(instant.toEpochMilli()); 041 } 042 return returnValue; 043 } 044 045}