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.DependencyNode;
26
27 /**
28 * A dependency graph transformer that does not perform any changes on its input.
29 */
30 public final class NoopDependencyGraphTransformer
31 implements DependencyGraphTransformer
32 {
33
34 /**
35 * A ready-made instance of this dependency graph transformer which can safely be reused throughout an entire
36 * application regardless of multi-threading.
37 */
38 public static final DependencyGraphTransformer INSTANCE = new NoopDependencyGraphTransformer();
39
40 /**
41 * Creates a new instance of this graph transformer. Usually, {@link #INSTANCE} should be used instead.
42 */
43 public NoopDependencyGraphTransformer()
44 {
45 }
46
47 public DependencyNode transformGraph( DependencyNode node, DependencyGraphTransformationContext context )
48 throws RepositoryException
49 {
50 return node;
51 }
52
53 }