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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.apache.maven.classrealm;
20  
21  import java.util.List;
22  import java.util.Map;
23  
24  import org.apache.maven.model.Model;
25  import org.apache.maven.model.Plugin;
26  import org.codehaus.plexus.classworlds.realm.ClassRealm;
27  import org.eclipse.aether.artifact.Artifact;
28  
29  /**
30   * Manages the class realms used by Maven. <strong>Warning:</strong> This is an internal utility interface that is only
31   * public for technical reasons, it is not part of the public API. In particular, this interface can be changed or
32   * deleted without prior notice.
33   *
34   * @author Benjamin Bentmann
35   */
36  public interface ClassRealmManager {
37  
38      /**
39       * Gets the class realm hosting the Maven core.
40       *
41       * @return The class realm hosting the Maven core, never {@code null}.
42       */
43      ClassRealm getCoreRealm();
44  
45      /**
46       * Gets the class realm exposing the Maven API. This is basically a restricted view on the Maven core realm.
47       *
48       * @return The class realm exposing the Maven API, never {@code null}.
49       */
50      ClassRealm getMavenApiRealm();
51  
52      /**
53       * Creates a new class realm for the specified project and its build extensions.
54       *
55       * @param model The model of the project for which to create a realm, must not be {@code null}.
56       * @param artifacts The artifacts to add to the class realm, may be {@code null}. Unresolved artifacts (i.e. with a
57       *            missing file) will automatically be excluded from the realm.
58       * @return The new project realm, never {@code null}.
59       */
60      ClassRealm createProjectRealm(Model model, List<Artifact> artifacts);
61  
62      /**
63       * Creates a new class realm for the specified build extension.
64       *
65       * @param extension The extension plugin for which to create a realm, must not be {@code null}.
66       * @param artifacts The artifacts to add to the class realm, may be {@code null}. Unresolved artifacts (i.e. with a
67       *            missing file) will automatically be excluded from the realm.
68       * @return The new extension realm, never {@code null}.
69       */
70      ClassRealm createExtensionRealm(Plugin extension, List<Artifact> artifacts);
71  
72      /**
73       * Creates a new class realm for the specified plugin.
74       *
75       * @param plugin The plugin for which to create a realm, must not be {@code null}.
76       * @param parent The parent realm for the new realm, may be {@code null}.
77       * @param parentImports The packages/types to import from the parent realm, may be {@code null}.
78       * @param foreignImports The packages/types to import from foreign realms, may be {@code null}.
79       * @param artifacts The artifacts to add to the class realm, may be {@code null}. Unresolved artifacts (i.e. with a
80       *            missing file) will automatically be excluded from the realm.
81       * @return The new plugin realm, never {@code null}.
82       */
83      ClassRealm createPluginRealm(
84              Plugin plugin,
85              ClassLoader parent,
86              List<String> parentImports,
87              Map<String, ClassLoader> foreignImports,
88              List<Artifact> artifacts);
89  }