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}