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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.cling.invoker;
20  
21  import org.apache.maven.api.services.Lookup;
22  import org.apache.maven.internal.impl.DefaultLookup;
23  import org.codehaus.plexus.PlexusContainer;
24  
25  import static java.util.Objects.requireNonNull;
26  
27  /**
28   * Container capsule backed by Plexus Container.
29   */
30  public class PlexusContainerCapsule implements ContainerCapsule {
31      private final ClassLoader previousClassLoader;
32      private final PlexusContainer plexusContainer;
33      private final Lookup lookup;
34  
35      public PlexusContainerCapsule(ClassLoader previousClassLoader, PlexusContainer plexusContainer) {
36          this.previousClassLoader = requireNonNull(previousClassLoader, "previousClassLoader");
37          this.plexusContainer = requireNonNull(plexusContainer, "plexusContainer");
38          this.lookup = new DefaultLookup(plexusContainer);
39      }
40  
41      @Override
42      public Lookup getLookup() {
43          return lookup;
44      }
45  
46      @Override
47      public void close() {
48          try {
49              plexusContainer.dispose();
50          } finally {
51              Thread.currentThread().setContextClassLoader(previousClassLoader);
52          }
53      }
54  }