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.math.BigInteger;
020
021import javax.enterprise.context.ApplicationScoped;
022
023import org.microbean.settings.Converter;
024import org.microbean.settings.Value;
025
026@ApplicationScoped
027public class BigIntegerConverter implements Converter<BigInteger> {
028
029  private static final long serialVersionUID = 1L;
030
031  public BigIntegerConverter() {
032    super();
033  }
034
035  @Override
036  public BigInteger convert(final Value value) {
037    final BigInteger returnValue;
038    if (value == null) {
039      returnValue = null;
040    } else {
041      final String stringValue = value.get();
042      if (stringValue == null) {
043        returnValue = null;
044      } else {
045        returnValue = BigInteger.valueOf(Long.parseLong(stringValue));
046      }
047    }
048    return returnValue;
049  }
050
051}