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 import org.eclipse.aether.util.ConfigUtils;
26
27 import javax.inject.Inject;
28 import javax.inject.Named;
29 import javax.inject.Singleton;
30 import java.util.Collection;
31 import java.util.Collections;
32 import java.util.Objects;
33
34 /**
35 * Static {@link NameMapper}, always assigns one same name, effectively becoming equivalent to "static" sync context.
36 */
37 @Singleton
38 @Named( StaticNameMapper.NAME )
39 public class StaticNameMapper implements NameMapper
40 {
41 public static final String NAME = "static";
42
43 /**
44 * Configuration property to pass in static name
45 */
46 private static final String CONFIG_PROP_NAME = "aether.syncContext.named.static.name";
47
48 private final String name;
49
50 /**
51 * Uses string {@code "static"} for the static name
52 */
53 @Inject
54 public StaticNameMapper()
55 {
56 this( NAME );
57 }
58
59 /**
60 * Uses passed in non-{@code null} string for the static name
61 */
62 public StaticNameMapper( final String name )
63 {
64 this.name = Objects.requireNonNull( name );
65 }
66
67 @Override
68 public Collection<String> nameLocks( final RepositorySystemSession session,
69 final Collection<? extends Artifact> artifacts,
70 final Collection<? extends Metadata> metadatas )
71 {
72 return Collections.singletonList( ConfigUtils.getString( session, name, CONFIG_PROP_NAME ) );
73 }
74 }