001    package org.apache.maven.repository.legacy.resolver.transform;
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 org.apache.maven.artifact.Artifact;
023    import org.apache.maven.artifact.repository.ArtifactRepository;
024    import org.apache.maven.artifact.repository.RepositoryRequest;
025    import org.apache.maven.artifact.repository.metadata.RepositoryMetadataResolutionException;
026    import org.apache.maven.artifact.repository.metadata.Versioning;
027    import org.apache.maven.artifact.resolver.ArtifactNotFoundException;
028    import org.apache.maven.artifact.resolver.ArtifactResolutionException;
029    import org.codehaus.plexus.component.annotations.Component;
030    
031    @Component( role = ArtifactTransformation.class, hint = "latest" )
032    public class LatestArtifactTransformation
033        extends AbstractVersionTransformation
034    {
035    
036        public void transformForResolve( Artifact artifact, RepositoryRequest request )
037            throws ArtifactResolutionException, ArtifactNotFoundException
038        {
039            if ( Artifact.LATEST_VERSION.equals( artifact.getVersion() ) )
040            {
041                try
042                {
043                    String version = resolveVersion( artifact, request );
044                    if ( Artifact.LATEST_VERSION.equals( version ) )
045                    {
046                        throw new ArtifactNotFoundException( "Unable to determine the latest version", artifact );
047                    }
048    
049                    artifact.setBaseVersion( version );
050                    artifact.updateVersion( version, request.getLocalRepository() );
051                }
052                catch ( RepositoryMetadataResolutionException e )
053                {
054                    throw new ArtifactResolutionException( e.getMessage(), artifact, e );
055                }
056            }
057        }
058    
059        public void transformForInstall( Artifact artifact, ArtifactRepository localRepository )
060        {
061            // metadata is added via addPluginArtifactMetadata
062        }
063    
064        public void transformForDeployment( Artifact artifact, ArtifactRepository remoteRepository,
065                                            ArtifactRepository localRepository )
066        {
067            // metadata is added via addPluginArtifactMetadata
068        }
069    
070        protected String constructVersion( Versioning versioning, String baseVersion )
071        {
072            return versioning.getLatest();
073        }
074    }