001package org.apache.maven.repository.legacy.resolver.conflict;
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.PlexusConstants;
023import org.codehaus.plexus.PlexusContainer;
024import org.codehaus.plexus.component.annotations.Component;
025import org.codehaus.plexus.component.annotations.Requirement;
026import org.codehaus.plexus.component.repository.exception.ComponentLookupException;
027import org.codehaus.plexus.context.Context;
028import org.codehaus.plexus.context.ContextException;
029import org.codehaus.plexus.personality.plexus.lifecycle.phase.Contextualizable;
030
031/**
032 * A conflict resolver factory that obtains instances from a plexus container.
033 *
034 * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
035 * @todo you don't need the container in here with the active maps (jvz).
036 * @since 3.0
037 */
038@Component( role = ConflictResolverFactory.class )
039public class DefaultConflictResolverFactory
040    implements ConflictResolverFactory, Contextualizable
041{
042    // fields -----------------------------------------------------------------
043
044    /**
045     * The plexus container used to obtain instances from.
046     */
047    @Requirement
048    private PlexusContainer container;
049
050    // ConflictResolverFactory methods ----------------------------------------
051
052    /*
053    * @see org.apache.maven.artifact.resolver.conflict.ConflictResolverFactory#getConflictResolver(java.lang.String)
054    */
055
056    public ConflictResolver getConflictResolver( String type )
057        throws ConflictResolverNotFoundException
058    {
059        try
060        {
061            return (ConflictResolver) container.lookup( ConflictResolver.ROLE, type );
062        }
063        catch ( ComponentLookupException exception )
064        {
065            throw new ConflictResolverNotFoundException( "Cannot find conflict resolver of type: " + type );
066        }
067    }
068
069    // Contextualizable methods -----------------------------------------------
070
071    /*
072     * @see org.codehaus.plexus.personality.plexus.lifecycle.phase.Contextualizable#contextualize(org.codehaus.plexus.context.Context)
073     */
074
075    public void contextualize( Context context )
076        throws ContextException
077    {
078        container = (PlexusContainer) context.get( PlexusConstants.PLEXUS_KEY );
079    }
080}