001package org.eclipse.aether.util.graph.transformer; 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.RepositoryException; 023import org.eclipse.aether.collection.DependencyGraphTransformationContext; 024import org.eclipse.aether.collection.DependencyGraphTransformer; 025import org.eclipse.aether.graph.Dependency; 026import org.eclipse.aether.graph.DependencyNode; 027import org.eclipse.aether.util.artifact.JavaScopes; 028 029import static java.util.Objects.requireNonNull; 030 031/** 032 * A dependency graph transformer that refines the request context for nodes that belong to the "project" context by 033 * appending the classpath type to which the node belongs. For instance, a compile-time project dependency will be 034 * assigned the request context "project/compile". 035 * 036 * @see DependencyNode#getRequestContext() 037 */ 038public final class JavaDependencyContextRefiner 039 implements DependencyGraphTransformer 040{ 041 042 public DependencyNode transformGraph( DependencyNode node, DependencyGraphTransformationContext context ) 043 throws RepositoryException 044 { 045 requireNonNull( node, "node cannot be null" ); 046 requireNonNull( context, "context cannot be null" ); 047 String ctx = node.getRequestContext(); 048 049 if ( "project".equals( ctx ) ) 050 { 051 String scope = getClasspathScope( node ); 052 if ( scope != null ) 053 { 054 ctx += '/' + scope; 055 node.setRequestContext( ctx ); 056 } 057 } 058 059 for ( DependencyNode child : node.getChildren() ) 060 { 061 transformGraph( child, context ); 062 } 063 064 return node; 065 } 066 067 private String getClasspathScope( DependencyNode node ) 068 { 069 Dependency dependency = node.getDependency(); 070 if ( dependency == null ) 071 { 072 return null; 073 } 074 075 String scope = dependency.getScope(); 076 077 if ( JavaScopes.COMPILE.equals( scope ) || JavaScopes.SYSTEM.equals( scope ) 078 || JavaScopes.PROVIDED.equals( scope ) ) 079 { 080 return JavaScopes.COMPILE; 081 } 082 else if ( JavaScopes.RUNTIME.equals( scope ) ) 083 { 084 return JavaScopes.RUNTIME; 085 } 086 else if ( JavaScopes.TEST.equals( scope ) ) 087 { 088 return JavaScopes.TEST; 089 } 090 091 return null; 092 } 093 094}