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1   package org.apache.onami.test.mock.guice;
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.lang.reflect.Field;
23  import java.util.Map;
24  
25  import org.apache.onami.test.annotation.Mock;
26  import org.apache.onami.test.reflection.AnnotationHandler;
27  import org.apache.onami.test.reflection.ClassVisitor;
28  import org.apache.onami.test.reflection.HandleException;
29  
30  import com.google.inject.TypeLiteral;
31  import com.google.inject.spi.TypeEncounter;
32  import com.google.inject.spi.TypeListener;
33  
34  /**
35   * <p>
36   * {@link TypeListener} implementation.
37   * </p>
38   * <p>
39   * Creates a specific {@link MockMembersInjector} for each {@link Mock} annotation found.
40   * </p>
41   *
42   * @see MockMembersInjector
43   * @see Mock
44   */
45  public class MockTypeListener
46      implements TypeListener
47  {
48  
49      private final Map<Field, Object> mockedObjects;
50  
51      /**
52       * Creates a new {@code MockTypeListener} instance given a map of mocked objects.
53       *
54       * @param mockedObjects a map of mocked objects
55       */
56      public MockTypeListener( Map<Field, Object> mockedObjects )
57      {
58          this.mockedObjects = mockedObjects;
59      }
60  
61      /**
62       * {@inheritDoc}
63       */
64      public <I> void hear( final TypeLiteral<I> typeLiteral, final TypeEncounter<I> typeEncounter )
65      {
66          try
67          {
68              new ClassVisitor()
69              .registerHandler( Mock.class, new AnnotationHandler<Mock, Field>()
70              {
71  
72                  public void handle( Mock annotation, Field field )
73                      throws HandleException
74                  {
75                      typeEncounter.register( new MockMembersInjector<I>( field, mockedObjects ) );
76                  }
77  
78              } )
79              .visit( typeLiteral.getRawType() );
80          }
81          catch ( HandleException e )
82          {
83              typeEncounter.addError( e );
84          }
85      }
86  
87  }