001package org.apache.maven.resolver.examples.plexus;
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.codehaus.plexus.ContainerConfiguration;
023import org.codehaus.plexus.DefaultContainerConfiguration;
024import org.codehaus.plexus.DefaultPlexusContainer;
025import org.codehaus.plexus.PlexusConstants;
026import org.eclipse.aether.RepositorySystem;
027
028/**
029 * A factory for repository system instances that employs Plexus to wire up the system's components.
030 */
031public class PlexusRepositorySystemFactory
032{
033
034    public static RepositorySystem newRepositorySystem()
035    {
036        /*
037         * Maven Artifact Resolver's components are equipped with plexus-specific metadata to enable discovery and
038         * wiring of components by a Plexus container so this is as easy as looking up the implementation.
039         */
040        try
041        {
042            ContainerConfiguration config = new DefaultContainerConfiguration();
043            config.setAutoWiring( true );
044            config.setClassPathScanning( PlexusConstants.SCANNING_INDEX );
045            return new DefaultPlexusContainer( config ).lookup( RepositorySystem.class );
046        }
047        catch ( Exception e )
048        {
049            throw new IllegalStateException( "dependency injection failed", e );
050        }
051    }
052
053}