001    package org.apache.maven.plugin.version;
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     * Resolves a version for a plugin.
024     * 
025     * @since 3.0
026     * @author Benjamin Bentmann
027     */
028    public interface PluginVersionResolver
029    {
030    
031        /**
032         * Resolves the version for the specified request.
033         * 
034         * @param request The request that holds the details about the plugin and the repositories to consult, must not be
035         *            {@code null}.
036         * @return The result of the version resolution, never {@code null}.
037         * @throws PluginVersionResolutionException If the plugin version could not be resolved.
038         */
039        PluginVersionResult resolve( PluginVersionRequest request )
040            throws PluginVersionResolutionException;
041    
042    }