001 package org.apache.maven.model.management;
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
022 import java.util.Collections;
023 import java.util.HashMap;
024 import java.util.List;
025 import java.util.Map;
026
027 import org.apache.maven.model.Dependency;
028 import org.apache.maven.model.DependencyManagement;
029 import org.apache.maven.model.Exclusion;
030 import org.apache.maven.model.Model;
031 import org.apache.maven.model.building.ModelBuildingRequest;
032 import org.apache.maven.model.building.ModelProblemCollector;
033 import org.apache.maven.model.merge.MavenModelMerger;
034 import org.codehaus.plexus.component.annotations.Component;
035
036 /**
037 * Handles injection of dependency management into the model.
038 *
039 * @author Benjamin Bentmann
040 */
041 @Component( role = DependencyManagementInjector.class )
042 public class DefaultDependencyManagementInjector
043 implements DependencyManagementInjector
044 {
045
046 private ManagementModelMerger merger = new ManagementModelMerger();
047
048 public void injectManagement( Model model, ModelBuildingRequest request, ModelProblemCollector problems )
049 {
050 merger.mergeManagedDependencies( model );
051 }
052
053 protected static class ManagementModelMerger
054 extends MavenModelMerger
055 {
056
057 public void mergeManagedDependencies( Model model )
058 {
059 DependencyManagement dependencyManagement = model.getDependencyManagement();
060 if ( dependencyManagement != null )
061 {
062 Map<Object, Dependency> dependencies = new HashMap<Object, Dependency>();
063 Map<Object, Object> context = Collections.emptyMap();
064
065 for ( Dependency dependency : model.getDependencies() )
066 {
067 Object key = getDependencyKey( dependency );
068 dependencies.put( key, dependency );
069 }
070
071 for ( Dependency managedDependency : dependencyManagement.getDependencies() )
072 {
073 Object key = getDependencyKey( managedDependency );
074 Dependency dependency = dependencies.get( key );
075 if ( dependency != null )
076 {
077 mergeDependency( dependency, managedDependency, false, context );
078 }
079 }
080 }
081 }
082
083 @Override
084 protected void mergeDependency_Optional( Dependency target, Dependency source, boolean sourceDominant,
085 Map<Object, Object> context )
086 {
087 // optional flag is not managed
088 }
089
090 @Override
091 protected void mergeDependency_Exclusions( Dependency target, Dependency source, boolean sourceDominant,
092 Map<Object, Object> context )
093 {
094 List<Exclusion> tgt = target.getExclusions();
095 if ( tgt.isEmpty() )
096 {
097 List<Exclusion> src = source.getExclusions();
098
099 for ( Exclusion element : src )
100 {
101 Exclusion clone = element.clone();
102 target.addExclusion( clone );
103 }
104 }
105 }
106
107 }
108
109 }