1 package org.eclipse.aether.util.graph.manager; 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.collection.DependencyCollectionContext; 23 import org.eclipse.aether.collection.DependencyManagement; 24 import org.eclipse.aether.collection.DependencyManager; 25 import org.eclipse.aether.graph.Dependency; 26 27 /** 28 * A dependency manager that does not do any dependency management. 29 */ 30 public final class NoopDependencyManager 31 implements DependencyManager 32 { 33 34 /** 35 * A ready-made instance of this dependency manager which can safely be reused throughout an entire application 36 * regardless of multi-threading. 37 */ 38 public static final DependencyManager INSTANCE = new NoopDependencyManager(); 39 40 /** 41 * Creates a new instance of this dependency manager. Usually, {@link #INSTANCE} should be used instead. 42 */ 43 public NoopDependencyManager() 44 { 45 } 46 47 public DependencyManager deriveChildManager( DependencyCollectionContext context ) 48 { 49 return this; 50 } 51 52 public DependencyManagement manageDependency( Dependency dependency ) 53 { 54 return null; 55 } 56 57 @Override 58 public boolean equals( Object obj ) 59 { 60 if ( this == obj ) 61 { 62 return true; 63 } 64 else if ( null == obj || !getClass().equals( obj.getClass() ) ) 65 { 66 return false; 67 } 68 return true; 69 } 70 71 @Override 72 public int hashCode() 73 { 74 return getClass().hashCode(); 75 } 76 77 }