001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.eclipse.aether.internal.impl.synccontext.named; 020 021import java.util.Collection; 022import java.util.Collections; 023 024import org.eclipse.aether.RepositorySystemSession; 025import org.eclipse.aether.artifact.Artifact; 026import org.eclipse.aether.metadata.Metadata; 027import org.eclipse.aether.named.NamedLockKey; 028 029/** 030 * Static {@link NameMapper}, always assigns one same name, effectively becoming equivalent to "static" sync context: 031 * always maps ANY input to same name. 032 */ 033public class StaticNameMapper implements NameMapper { 034 @Override 035 public boolean isFileSystemFriendly() { 036 return true; 037 } 038 039 @Override 040 public Collection<NamedLockKey> nameLocks( 041 final RepositorySystemSession session, 042 final Collection<? extends Artifact> artifacts, 043 final Collection<? extends Metadata> metadatas) { 044 if (artifacts != null && !artifacts.isEmpty()) { 045 return Collections.singletonList(NamedLockKey.of("static-artifact")); 046 } else if (metadatas != null && !metadatas.isEmpty()) { 047 return Collections.singletonList(NamedLockKey.of("static-metadata")); 048 } else { 049 return Collections.emptyList(); 050 } 051 } 052}