001    package org.apache.maven.plugin.descriptor;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *  http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    /**
023     * Describes a component requirement.
024     *
025     * @author <a href="mailto:brett@apache.org">Brett Porter</a>
026     */
027    public class Requirement
028        implements Cloneable
029    {
030        private final String role;
031    
032        private final String roleHint;
033    
034        public Requirement( String role )
035        {
036            this.role = role;
037            this.roleHint = null;
038        }
039    
040        public Requirement( String role, String roleHint )
041        {
042            this.role = role;
043            this.roleHint = roleHint;
044        }
045    
046        public String getRole()
047        {
048            return role;
049        }
050    
051        public String getRoleHint()
052        {
053            return roleHint;
054        }
055    
056        /**
057         * Creates a shallow copy of this requirement.
058         */
059        @Override
060        public Requirement clone()
061        {
062            try
063            {
064                return (Requirement) super.clone();
065            }
066            catch ( CloneNotSupportedException e )
067            {
068                throw new UnsupportedOperationException( e );
069            }
070        }
071    
072    }