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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;
24  import org.eclipse.aether.artifact.Artifact;
25  import org.eclipse.aether.artifact.DefaultArtifact;
26  import org.eclipse.aether.graph.Dependency;
27  import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
28  import org.eclipse.aether.resolution.ArtifactDescriptorResult;
29  
30  /**
31   * Determines the direct dependencies of an artifact as declared in its artifact descriptor (POM).
32   */
33  public class GetDirectDependencies {
34  
35      /**
36       * Main.
37       * @param args
38       * @throws Exception
39       */
40      public static void main(String[] args) throws Exception {
41          System.out.println("------------------------------------------------------------");
42          System.out.println(GetDirectDependencies.class.getSimpleName());
43  
44          RepositorySystem system = Booter.newRepositorySystem(Booter.selectFactory(args));
45  
46          RepositorySystemSession session = Booter.newRepositorySystemSession(system);
47  
48          Artifact artifact = new DefaultArtifact("org.apache.maven.resolver:maven-resolver-impl:1.3.3");
49  
50          ArtifactDescriptorRequest descriptorRequest = new ArtifactDescriptorRequest();
51          descriptorRequest.setArtifact(artifact);
52          descriptorRequest.setRepositories(Booter.newRepositories(system, session));
53  
54          ArtifactDescriptorResult descriptorResult = system.readArtifactDescriptor(session, descriptorRequest);
55  
56          for (Dependency dependency : descriptorResult.getDependencies()) {
57              System.out.println(dependency);
58          }
59      }
60  }