001package 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 */
027public 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}