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