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.eclipse.aether.RepositorySystem;
024import org.eclipse.aether.RepositorySystemSession;
025import org.eclipse.aether.artifact.Artifact;
026import org.eclipse.aether.artifact.DefaultArtifact;
027import org.eclipse.aether.graph.Dependency;
028import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
029import org.eclipse.aether.resolution.ArtifactDescriptorResult;
030
031/**
032 * Determines the direct dependencies of an artifact as declared in its artifact descriptor (POM).
033 */
034public class GetDirectDependencies
035{
036
037    /**
038     * Main.
039     * @param args
040     * @throws Exception
041     */
042    public static void main( String[] args )
043        throws Exception
044    {
045        System.out.println( "------------------------------------------------------------" );
046        System.out.println( GetDirectDependencies.class.getSimpleName() );
047
048        RepositorySystem system = Booter.newRepositorySystem();
049
050        RepositorySystemSession session = Booter.newRepositorySystemSession( system );
051
052        Artifact artifact = new DefaultArtifact( "org.apache.maven.resolver:maven-resolver-impl:1.3.3" );
053
054        ArtifactDescriptorRequest descriptorRequest = new ArtifactDescriptorRequest();
055        descriptorRequest.setArtifact( artifact );
056        descriptorRequest.setRepositories( Booter.newRepositories( system, session ) );
057
058        ArtifactDescriptorResult descriptorResult = system.readArtifactDescriptor( session, descriptorRequest );
059
060        for ( Dependency dependency : descriptorResult.getDependencies() )
061        {
062            System.out.println( dependency );
063        }
064    }
065
066}