001package org.eclipse.aether.util.graph.traverser; 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 022import org.eclipse.aether.artifact.ArtifactProperties; 023import org.eclipse.aether.collection.DependencyCollectionContext; 024import org.eclipse.aether.collection.DependencyTraverser; 025import org.eclipse.aether.graph.Dependency; 026 027import static java.util.Objects.requireNonNull; 028 029/** 030 * A dependency traverser that excludes the dependencies of fat artifacts from the traversal. Fat artifacts are 031 * artifacts that have the property {@link org.eclipse.aether.artifact.ArtifactProperties#INCLUDES_DEPENDENCIES} set to 032 * {@code true}. 033 * 034 * @see org.eclipse.aether.artifact.Artifact#getProperties() 035 */ 036public final class FatArtifactTraverser 037 implements DependencyTraverser 038{ 039 040 /** 041 * Creates a new instance of this dependency traverser. 042 */ 043 public FatArtifactTraverser() 044 { 045 } 046 047 public boolean traverseDependency( Dependency dependency ) 048 { 049 requireNonNull( dependency, "dependency cannot be null" ); 050 String prop = dependency.getArtifact().getProperty( ArtifactProperties.INCLUDES_DEPENDENCIES, "" ); 051 return !Boolean.parseBoolean( prop ); 052 } 053 054 public DependencyTraverser deriveChildTraverser( DependencyCollectionContext context ) 055 { 056 requireNonNull( context, "context cannot be null" ); 057 return this; 058 } 059 060 @Override 061 public boolean equals( Object obj ) 062 { 063 if ( this == obj ) 064 { 065 return true; 066 } 067 else if ( null == obj || !getClass().equals( obj.getClass() ) ) 068 { 069 return false; 070 } 071 return true; 072 } 073 074 @Override 075 public int hashCode() 076 { 077 return getClass().hashCode(); 078 } 079 080}