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1   package org.apache.maven.artifact.transform;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *  http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.apache.maven.artifact.Artifact;
23  import org.apache.maven.artifact.repository.ArtifactRepository;
24  import org.apache.maven.artifact.repository.metadata.RepositoryMetadataResolutionException;
25  import org.apache.maven.artifact.repository.metadata.Versioning;
26  import org.apache.maven.artifact.resolver.ArtifactNotFoundException;
27  import org.apache.maven.artifact.resolver.ArtifactResolutionException;
28  
29  import java.util.List;
30  
31  public class LatestArtifactTransformation
32      extends AbstractVersionTransformation
33  {
34      public void transformForResolve( Artifact artifact, List<ArtifactRepository> remoteRepositories, ArtifactRepository localRepository )
35          throws ArtifactResolutionException, ArtifactNotFoundException
36      {
37          if ( Artifact.LATEST_VERSION.equals( artifact.getVersion() ) )
38          {
39              try
40              {
41                  String version = resolveVersion( artifact, localRepository, remoteRepositories );
42                  if ( Artifact.LATEST_VERSION.equals( version ) )
43                  {
44                      throw new ArtifactNotFoundException( "Unable to determine the latest version", artifact );
45                  }
46  
47                  artifact.setBaseVersion( version );
48                  artifact.updateVersion( version, localRepository );
49              }
50              catch ( RepositoryMetadataResolutionException e )
51              {
52                  throw new ArtifactResolutionException( e.getMessage(), artifact, e );
53              }
54          }
55      }
56  
57      public void transformForInstall( Artifact artifact, ArtifactRepository localRepository )
58      {
59          // metadata is added via addPluginArtifactMetadata
60      }
61  
62      public void transformForDeployment( Artifact artifact, ArtifactRepository remoteRepository,
63                                          ArtifactRepository localRepository )
64      {
65          // metadata is added via addPluginArtifactMetadata
66      }
67  
68      protected String constructVersion( Versioning versioning, String baseVersion )
69      {
70          return versioning.getLatest();
71      }
72  }