1 package org.eclipse.aether.internal.impl.synccontext.named; 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.RepositorySystemSession; 23 import org.eclipse.aether.artifact.Artifact; 24 import org.eclipse.aether.metadata.Metadata; 25 26 import java.util.Collection; 27 28 /** 29 * Component mapping lock names to passed in artifacts and metadata as required. 30 */ 31 public interface NameMapper 32 { 33 /** 34 * Creates (opaque) names for passed in artifacts and metadata. Returned collection has max size of sum of the 35 * passed in artifacts and metadata collections, or less. If an empty collection is returned, there will be no 36 * locking happening. Never returns {@code null}. The resulting collection MUST BE "stable" (always sorted by 37 * same criteria) to avoid deadlocks by acquiring locks in same order, essentially disregarding the order of 38 * the input collections. 39 */ 40 Collection<String> nameLocks( RepositorySystemSession session, Collection<? extends Artifact> artifacts, 41 Collection<? extends Metadata> metadatas ); 42 }