1 package org.eclipse.aether.util.graph.traverser;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import org.eclipse.aether.artifact.ArtifactProperties;
23 import org.eclipse.aether.collection.DependencyCollectionContext;
24 import org.eclipse.aether.collection.DependencyTraverser;
25 import org.eclipse.aether.graph.Dependency;
26
27 import static java.util.Objects.requireNonNull;
28
29 /**
30 * A dependency traverser that excludes the dependencies of fat artifacts from the traversal. Fat artifacts are
31 * artifacts that have the property {@link org.eclipse.aether.artifact.ArtifactProperties#INCLUDES_DEPENDENCIES} set to
32 * {@code true}.
33 *
34 * @see org.eclipse.aether.artifact.Artifact#getProperties()
35 */
36 public final class FatArtifactTraverser
37 implements DependencyTraverser
38 {
39
40 /**
41 * Creates a new instance of this dependency traverser.
42 */
43 public FatArtifactTraverser()
44 {
45 }
46
47 public boolean traverseDependency( Dependency dependency )
48 {
49 requireNonNull( dependency, "dependency cannot be null" );
50 String prop = dependency.getArtifact().getProperty( ArtifactProperties.INCLUDES_DEPENDENCIES, "" );
51 return !Boolean.parseBoolean( prop );
52 }
53
54 public DependencyTraverser deriveChildTraverser( DependencyCollectionContext context )
55 {
56 requireNonNull( context, "context cannot be null" );
57 return this;
58 }
59
60 @Override
61 public boolean equals( Object obj )
62 {
63 if ( this == obj )
64 {
65 return true;
66 }
67 else if ( null == obj || !getClass().equals( obj.getClass() ) )
68 {
69 return false;
70 }
71 return true;
72 }
73
74 @Override
75 public int hashCode()
76 {
77 return getClass().hashCode();
78 }
79
80 }