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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.scope;
20  
21  import java.util.Collection;
22  import java.util.Optional;
23  
24  /**
25   * Scope manager.
26   *
27   * @since 2.0.0
28   *
29   * @noimplement This interface is not intended to be implemented by clients.
30   * @noextend This interface is not intended to be extended by clients.
31   */
32  public interface ScopeManager {
33      /**
34       * The label.
35       */
36      String getId();
37  
38      /**
39       * Returns the "system" scope, if exists.
40       * <p>
41       * This is a special scope. In this scope case, Resolver should handle it specially, as it has no POM (so is
42       * always a leaf on graph), is not in any repository, but is actually hosted on host OS file system. On resolution
43       * resolver merely checks is file present or not.
44       */
45      Optional<SystemDependencyScope> getSystemDependencyScope();
46  
47      /**
48       * Returns a specific dependency scope by label.
49       * <p>
50       * Note: despite returns optional, this method may throw as well, if manager set in "strict" mode.
51       */
52      Optional<DependencyScope> getDependencyScope(String id);
53  
54      /**
55       * Returns the "universe" (all) of dependency scopes.
56       */
57      Collection<DependencyScope> getDependencyScopeUniverse();
58  
59      /**
60       * Returns a specific resolution scope by label.
61       * <p>
62       * Note: despite returns optional, this method may throw as well, if manager set in "strict" mode.
63       */
64      Optional<ResolutionScope> getResolutionScope(String id);
65  
66      /**
67       * Returns the "universe" (all) of resolution scopes.
68       */
69      Collection<ResolutionScope> getResolutionScopeUniverse();
70  }