    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  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 implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.beanutils2.locale.converters;
    019
    020import java.math.BigInteger;
    021import java.text.ParseException;
    022import java.util.Locale;
    023
    024import org.apache.commons.beanutils2.ConversionException;
    025
    026/**
    027 * Standard {@link org.apache.commons.beanutils2.locale.LocaleConverter} implementation that converts an incoming locale-sensitive String into a
    028 * {@link java.math.BigInteger} object, optionally using a default value or throwing a {@link org.apache.commons.beanutils2.ConversionException} if a conversion
    029 * error occurs.
    030 */
    031public class BigIntegerLocaleConverter extends DecimalLocaleConverter<BigInteger> {
    032
    033    /**
    034     * Builds instances of {@link BigIntegerLocaleConverter}.
    035     */
    036    public static class Builder extends DecimalLocaleConverter.Builder<Builder, BigInteger> {
    037
    038        @Override
    039        public BigIntegerLocaleConverter get() {
    040            return new BigIntegerLocaleConverter(defaultValue, locale, pattern, useDefault || defaultValue != null, localizedPattern);
    041        }
    042
    043    }
    044
    045    /**
    046     * Constructs a new builder.
    047     *
    048     * @return a new builder.
    049     */
    050    public static Builder builder() {
    051        return new Builder();
    052    }
    053
    054    private BigIntegerLocaleConverter(final BigInteger defaultValue, final Locale locale, final String pattern, final boolean useDefault,
    055            final boolean locPattern) {
    056        super(defaultValue, locale, pattern, useDefault, locPattern);
    057    }
    058
    059    /**
    060     * Parses the specified locale-sensitive input object into an output object of BigInteger type.
    061     *
    062     * @param value   The input object to be converted
    063     * @param pattern The pattern is used for the conversion
    064     * @return The converted value
    065     * @throws ConversionException if conversion cannot be performed successfully
    066     * @throws ParseException      if an error occurs parsing a String to a Number
    067     * @since 1.8.0
    068     */
    069    @Override
    070    protected BigInteger parse(final Object value, final String pattern) throws ParseException {
    071        final Number result = super.parse(value, pattern);
    072
    073        if (result == null || result instanceof BigInteger) {
    074            return (BigInteger) result;
    075        }
    076
    077        return BigInteger.valueOf(result.longValue());
    078    }
    079
    080}