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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.maven.repository.legacy.resolver.conflict;
20  
21  import org.apache.maven.artifact.resolver.ResolutionNode;
22  import org.codehaus.plexus.component.annotations.Component;
23  
24  /**
25   * Resolves conflicting artifacts by always selecting the <em>nearest</em> declaration. Nearest is defined as the
26   * declaration that has the least transitive steps away from the project being built.
27   *
28   * @author <a href="mailto:jason@maven.org">Jason van Zyl</a>
29   * @author <a href="mailto:markhobson@gmail.com">Mark Hobson</a>
30   * @since 3.0
31   */
32  @Component(role = ConflictResolver.class, hint = "nearest")
33  public class NearestConflictResolver implements ConflictResolver {
34      // ConflictResolver methods -----------------------------------------------
35  
36      /*
37       * @see org.apache.maven.artifact.resolver.conflict.ConflictResolver#resolveConflict(org.apache.maven.artifact.resolver.ResolutionNode,
38       *      org.apache.maven.artifact.resolver.ResolutionNode)
39       */
40  
41      public ResolutionNode resolveConflict(ResolutionNode node1, ResolutionNode node2) {
42          return node1.getDepth() <= node2.getDepth() ? node1 : node2;
43      }
44  }