1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.eclipse.aether.internal.impl.synccontext.named;
20
21 import java.util.Collection;
22 import java.util.Collections;
23
24 import org.eclipse.aether.RepositorySystemSession;
25 import org.eclipse.aether.artifact.Artifact;
26 import org.eclipse.aether.metadata.Metadata;
27 import org.eclipse.aether.named.NamedLockKey;
28
29 /**
30 * Static {@link NameMapper}, always assigns one same name, effectively becoming equivalent to "static" sync context:
31 * always maps ANY input to same name.
32 */
33 public class StaticNameMapper implements NameMapper {
34 @Override
35 public boolean isFileSystemFriendly() {
36 return true;
37 }
38
39 @Override
40 public Collection<NamedLockKey> nameLocks(
41 final RepositorySystemSession session,
42 final Collection<? extends Artifact> artifacts,
43 final Collection<? extends Metadata> metadatas) {
44 if (artifacts != null && !artifacts.isEmpty()) {
45 return Collections.singletonList(NamedLockKey.of("static-artifact"));
46 } else if (metadatas != null && !metadatas.isEmpty()) {
47 return Collections.singletonList(NamedLockKey.of("static-metadata"));
48 } else {
49 return Collections.emptyList();
50 }
51 }
52 }