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.internal.impl.resolver.artifact;
20
21 import org.eclipse.aether.collection.DependencyCollectionContext;
22 import org.eclipse.aether.collection.DependencyTraverser;
23 import org.eclipse.aether.graph.Dependency;
24
25 import static java.util.Objects.requireNonNull;
26
27 /**
28 * A dependency traverser that excludes the dependencies of fat artifacts from the traversal. Fat artifacts are
29 * artifacts that have the property {@link MavenArtifactProperties#INCLUDES_DEPENDENCIES} set to
30 * {@code true}.
31 *
32 * @see org.eclipse.aether.artifact.Artifact#getProperties()
33 * @see MavenArtifactProperties
34 * @since 4.0.0
35 */
36 public final class FatArtifactTraverser implements DependencyTraverser {
37
38 public FatArtifactTraverser() {}
39
40 @Override
41 public boolean traverseDependency(Dependency dependency) {
42 requireNonNull(dependency, "dependency cannot be null");
43 String prop = dependency.getArtifact().getProperty(MavenArtifactProperties.INCLUDES_DEPENDENCIES, "");
44 return !Boolean.parseBoolean(prop);
45 }
46
47 @Override
48 public DependencyTraverser deriveChildTraverser(DependencyCollectionContext context) {
49 requireNonNull(context, "context cannot be null");
50 return this;
51 }
52
53 @Override
54 public boolean equals(Object obj) {
55 if (this == obj) {
56 return true;
57 } else if (null == obj || !getClass().equals(obj.getClass())) {
58 return false;
59 }
60 return true;
61 }
62
63 @Override
64 public int hashCode() {
65 return getClass().hashCode();
66 }
67 }