001package org.apache.maven.resolver.examples; 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 022import org.apache.maven.resolver.examples.util.Booter; 023import org.apache.maven.resolver.examples.util.ReverseTreeRepositoryListener; 024import org.eclipse.aether.DefaultRepositorySystemSession; 025import org.eclipse.aether.RepositorySystem; 026import org.eclipse.aether.artifact.Artifact; 027import org.eclipse.aether.artifact.DefaultArtifact; 028import org.eclipse.aether.collection.CollectRequest; 029import org.eclipse.aether.resolution.ArtifactDescriptorRequest; 030import org.eclipse.aether.resolution.ArtifactDescriptorResult; 031import org.eclipse.aether.util.graph.manager.DependencyManagerUtils; 032import org.eclipse.aether.util.graph.transformer.ConflictResolver; 033import org.eclipse.aether.util.listener.ChainedRepositoryListener; 034 035/** 036 * Example of building reverse dependency tree using custom {@link ReverseTreeRepositoryListener}. 037 */ 038public class ReverseDependencyTree 039{ 040 041 /** 042 * Main. 043 * @param args 044 * @throws Exception 045 */ 046 public static void main( String[] args ) 047 throws Exception 048 { 049 System.out.println( "------------------------------------------------------------" ); 050 System.out.println( ReverseDependencyTree.class.getSimpleName() ); 051 052 RepositorySystem system = Booter.newRepositorySystem( Booter.selectFactory( args ) ); 053 054 DefaultRepositorySystemSession session = Booter.newRepositorySystemSession( system ); 055 056 // install the listener into session 057 session.setRepositoryListener( new ChainedRepositoryListener( session.getRepositoryListener(), 058 new ReverseTreeRepositoryListener() ) ); 059 060 session.setConfigProperty( ConflictResolver.CONFIG_PROP_VERBOSE, true ); 061 session.setConfigProperty( DependencyManagerUtils.CONFIG_PROP_VERBOSE, true ); 062 063 Artifact artifact = new DefaultArtifact( "org.apache.maven:maven-resolver-provider:3.6.1" ); 064 065 ArtifactDescriptorRequest descriptorRequest = new ArtifactDescriptorRequest(); 066 descriptorRequest.setArtifact( artifact ); 067 descriptorRequest.setRepositories( Booter.newRepositories( system, session ) ); 068 ArtifactDescriptorResult descriptorResult = system.readArtifactDescriptor( session, descriptorRequest ); 069 070 CollectRequest collectRequest = new CollectRequest(); 071 collectRequest.setRequestContext( "demo" ); 072 collectRequest.setRootArtifact( descriptorResult.getArtifact() ); 073 collectRequest.setDependencies( descriptorResult.getDependencies() ); 074 collectRequest.setManagedDependencies( descriptorResult.getManagedDependencies() ); 075 collectRequest.setRepositories( descriptorRequest.getRepositories() ); 076 077 system.collectDependencies( session, collectRequest ); 078 079 // in this demo we are not interested in collect result, 080 // as all the "demo work" is done by installed ReverseTreeRepositoryListener 081 } 082 083}