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19 package org.apache.maven.resolver.examples;
20
21 import org.apache.maven.resolver.examples.util.Booter;
22 import org.apache.maven.resolver.examples.util.ReverseTreeRepositoryListener;
23 import org.eclipse.aether.RepositorySystem;
24 import org.eclipse.aether.RepositorySystemSession.CloseableSession;
25 import org.eclipse.aether.RepositorySystemSession.SessionBuilder;
26 import org.eclipse.aether.artifact.Artifact;
27 import org.eclipse.aether.artifact.DefaultArtifact;
28 import org.eclipse.aether.collection.CollectRequest;
29 import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
30 import org.eclipse.aether.resolution.ArtifactDescriptorResult;
31 import org.eclipse.aether.util.graph.manager.DependencyManagerUtils;
32 import org.eclipse.aether.util.graph.transformer.ConflictResolver;
33 import org.eclipse.aether.util.listener.ChainedRepositoryListener;
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38 public class ReverseDependencyTree {
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45 public static void main(String[] args) throws Exception {
46 System.out.println("------------------------------------------------------------");
47 System.out.println(ReverseDependencyTree.class.getSimpleName());
48
49 try (RepositorySystem system = Booter.newRepositorySystem(Booter.selectFactory(args))) {
50 SessionBuilder sessionBuilder = Booter.newRepositorySystemSession(system);
51 try (CloseableSession session = sessionBuilder.build()) {
52 sessionBuilder.setRepositoryListener(new ChainedRepositoryListener(
53 session.getRepositoryListener(), new ReverseTreeRepositoryListener()));
54 }
55 sessionBuilder.setConfigProperty(ConflictResolver.CONFIG_PROP_VERBOSE, true);
56 sessionBuilder.setConfigProperty(DependencyManagerUtils.CONFIG_PROP_VERBOSE, true);
57 try (CloseableSession session = sessionBuilder.build()) {
58 Artifact artifact = new DefaultArtifact("org.apache.maven:maven-resolver-provider:3.6.1");
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60 ArtifactDescriptorRequest descriptorRequest = new ArtifactDescriptorRequest();
61 descriptorRequest.setArtifact(artifact);
62 descriptorRequest.setRepositories(Booter.newRepositories(system, session));
63 ArtifactDescriptorResult descriptorResult = system.readArtifactDescriptor(session, descriptorRequest);
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65 CollectRequest collectRequest = new CollectRequest();
66 collectRequest.setRequestContext("demo");
67 collectRequest.setRootArtifact(descriptorResult.getArtifact());
68 collectRequest.setDependencies(descriptorResult.getDependencies());
69 collectRequest.setManagedDependencies(descriptorResult.getManagedDependencies());
70 collectRequest.setRepositories(descriptorRequest.getRepositories());
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72 system.collectDependencies(session, collectRequest);
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76 }
77 }
78 }
79 }