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 *      https://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.validator;
019
020/**
021 * A class for validating 10 digit ISBN codes. Based on this <a href="https://www.isbn.org/standards/home/isbn/international/html/usm4.htm"> algorithm</a>
022 * <p>
023 * <strong>NOTE:</strong> This has been replaced by the new {@link ISBNValidator}.
024 * </p>
025 *
026 * @since 1.2.0
027 * @deprecated Use the new ISBNValidator in the routines package
028 */
029@Deprecated
030public class ISBNValidator {
031
032    /**
033     * Constructs a new instance.
034     */
035    public ISBNValidator() {
036    }
037
038    /**
039     * If the ISBN is formatted with space or dash separators its format is validated. Then the digits in the number are weighted, summed, and divided by 11
040     * according to the ISBN algorithm. If the result is zero, the ISBN is valid. This method accepts formatted or raw ISBN codes.
041     *
042     * @param isbn Candidate ISBN number to be validated. {@code null} is considered invalid.
043     * @return true if the string is a valid ISBN code.
044     */
045    public boolean isValid(final String isbn) {
046        return org.apache.commons.validator.routines.ISBNValidator.getInstance().isValidISBN10(isbn);
047    }
048}