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 }