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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.artifact.resolver.filter;
20  
21  import java.util.List;
22  import java.util.function.Predicate;
23  
24  import org.apache.maven.artifact.Artifact;
25  import org.apache.maven.model.Exclusion;
26  
27  /**
28   * Filter to exclude from a list of artifact patterns.
29   */
30  public class ExclusionArtifactFilter implements ArtifactFilter {
31      private static final String WILDCARD = "*";
32  
33      private final List<Exclusion> exclusions;
34  
35      public ExclusionArtifactFilter(List<Exclusion> exclusions) {
36          this.exclusions = exclusions;
37      }
38  
39      private Predicate<Exclusion> sameArtifactId(Artifact artifact) {
40          return exclusion -> exclusion.getArtifactId().equals(artifact.getArtifactId());
41      }
42  
43      private Predicate<Exclusion> sameGroupId(Artifact artifact) {
44          return exclusion -> exclusion.getGroupId().equals(artifact.getGroupId());
45      }
46  
47      private Predicate<Exclusion> groupIdIsWildcard = exclusion -> WILDCARD.equals(exclusion.getGroupId());
48  
49      private Predicate<Exclusion> artifactIdIsWildcard = exclusion -> WILDCARD.equals(exclusion.getArtifactId());
50  
51      private Predicate<Exclusion> groupIdAndArtifactIdIsWildcard = groupIdIsWildcard.and(artifactIdIsWildcard);
52  
53      private Predicate<Exclusion> exclude(Artifact artifact) {
54          return groupIdAndArtifactIdIsWildcard
55                  .or(groupIdIsWildcard.and(sameArtifactId(artifact)))
56                  .or(artifactIdIsWildcard.and(sameGroupId(artifact)))
57                  .or(sameGroupId(artifact).and(sameArtifactId(artifact)));
58      }
59  
60      @Override
61      public boolean include(Artifact artifact) {
62          return !exclusions.stream().anyMatch(exclude(artifact));
63      }
64  }