001    package org.apache.maven.repository.metadata;
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    import java.util.List;
023    
024    import org.apache.maven.artifact.repository.ArtifactRepository;
025    
026    /**
027     * Provides some metadata operations, like querying the remote repository for a list of versions available for an
028     * artifact.
029     *
030     * @author Jason van Zyl
031     */
032    public interface MetadataSource
033    {
034        String ROLE = MetadataSource.class.getName();
035    
036        MetadataResolution retrieve( ArtifactMetadata artifact, ArtifactRepository localRepository,
037                                     List<ArtifactRepository> remoteRepositories )
038            throws MetadataRetrievalException;
039    }