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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.maven.resolver.examples;
20  
21  import org.apache.maven.resolver.examples.util.Booter;
22  import org.eclipse.aether.RepositorySystem;
23  import org.eclipse.aether.RepositorySystemSession.CloseableSession;
24  import org.eclipse.aether.artifact.Artifact;
25  import org.eclipse.aether.artifact.DefaultArtifact;
26  import org.eclipse.aether.resolution.VersionRangeRequest;
27  import org.eclipse.aether.resolution.VersionRangeResult;
28  import org.eclipse.aether.version.Version;
29  
30  /**
31   * Determines the newest version of an artifact.
32   */
33  public class FindNewestVersion {
34      /**
35       * Main.
36       * @param args
37       * @throws Exception
38       */
39      public static void main(String[] args) throws Exception {
40          System.out.println("------------------------------------------------------------");
41          System.out.println(FindNewestVersion.class.getSimpleName());
42  
43          try (RepositorySystem system = Booter.newRepositorySystem(Booter.selectFactory(args));
44                  CloseableSession session = Booter.newRepositorySystemSession(system, Booter.selectFs(args))
45                          .build()) {
46              Artifact artifact = new DefaultArtifact("org.apache.maven.resolver:maven-resolver-util:[0,)");
47  
48              VersionRangeRequest rangeRequest = new VersionRangeRequest();
49              rangeRequest.setArtifact(artifact);
50              rangeRequest.setRepositories(Booter.newRepositories(system, session));
51  
52              VersionRangeResult rangeResult = system.resolveVersionRange(session, rangeRequest);
53  
54              Version newestVersion = rangeResult.getHighestVersion();
55  
56              System.out.println(
57                      "Newest version " + newestVersion + " from repository " + rangeResult.getRepository(newestVersion));
58          }
59      }
60  }