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    package org.apache.commons.cli2.validation;
018    
019    import java.util.List;
020    
021    /**
022     * The validation interface for validating argument values(s).
023     *
024     * A validator can replace the argument string value with a
025     * specific class instance e.g. the {@link UrlValidator} replaces
026     * the string value with a {@link java.net.URL} instance.
027     *
028     * @author Rob Oxspring
029     * @author John Keyes
030     */
031    public interface Validator {
032    
033        /**
034         * Validate the specified values (List of Strings).
035         *
036         * @param values The values to validate.
037         *
038         * @throws InvalidArgumentException If any of the
039         * specified values are not valid.
040         */
041        void validate(final List values) throws InvalidArgumentException;
042    
043    }