1 package org.eclipse.aether.util.graph.transformer;
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.RepositoryException;
23 import org.eclipse.aether.collection.DependencyGraphTransformationContext;
24 import org.eclipse.aether.collection.DependencyGraphTransformer;
25 import org.eclipse.aether.graph.Dependency;
26 import org.eclipse.aether.graph.DependencyNode;
27 import org.eclipse.aether.util.artifact.JavaScopes;
28
29 /**
30 * A dependency graph transformer that refines the request context for nodes that belong to the "project" context by
31 * appending the classpath type to which the node belongs. For instance, a compile-time project dependency will be
32 * assigned the request context "project/compile".
33 *
34 * @see DependencyNode#getRequestContext()
35 */
36 public final class JavaDependencyContextRefiner
37 implements DependencyGraphTransformer
38 {
39
40 public DependencyNode transformGraph( DependencyNode node, DependencyGraphTransformationContext context )
41 throws RepositoryException
42 {
43 String ctx = node.getRequestContext();
44
45 if ( "project".equals( ctx ) )
46 {
47 String scope = getClasspathScope( node );
48 if ( scope != null )
49 {
50 ctx += '/' + scope;
51 node.setRequestContext( ctx );
52 }
53 }
54
55 for ( DependencyNode child : node.getChildren() )
56 {
57 transformGraph( child, context );
58 }
59
60 return node;
61 }
62
63 private String getClasspathScope( DependencyNode node )
64 {
65 Dependency dependency = node.getDependency();
66 if ( dependency == null )
67 {
68 return null;
69 }
70
71 String scope = dependency.getScope();
72
73 if ( JavaScopes.COMPILE.equals( scope ) || JavaScopes.SYSTEM.equals( scope )
74 || JavaScopes.PROVIDED.equals( scope ) )
75 {
76 return JavaScopes.COMPILE;
77 }
78 else if ( JavaScopes.RUNTIME.equals( scope ) )
79 {
80 return JavaScopes.RUNTIME;
81 }
82 else if ( JavaScopes.TEST.equals( scope ) )
83 {
84 return JavaScopes.TEST;
85 }
86
87 return null;
88 }
89
90 }