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1   package org.apache.maven.shared.transfer.artifact.install.internal;
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.InvocationTargetException;
23  
24  import org.apache.maven.shared.transfer.artifact.install.ArtifactInstallerException;
25  
26  /**
27   * Invokes method on objects using reflection.
28   */
29  final class Invoker
30  {
31      private Invoker()
32      {
33          // do not instantiate
34      }
35  
36      public static <T> T invoke( Object object, String method )
37          throws ArtifactInstallerException
38      {
39          try
40          {
41              @SuppressWarnings( "unchecked" )
42              T invoke = (T) object.getClass().getMethod( method ).invoke( object );
43              return invoke;
44          }
45          catch ( IllegalAccessException | InvocationTargetException | NoSuchMethodException e )
46          {
47              throw new ArtifactInstallerException( e.getMessage(), e );
48          }
49      }
50  
51      public static <T> T invoke( Class<?> objectClazz, String staticMethod, Class<?> argClazz, Object arg )
52          throws ArtifactInstallerException
53      {
54          try
55          {
56              @SuppressWarnings( "unchecked" )
57              T invoke = (T) objectClazz.getMethod( staticMethod, argClazz ).invoke( null, arg );
58              return invoke;
59          }
60          catch ( IllegalAccessException | InvocationTargetException | NoSuchMethodException e )
61          {
62              throw new ArtifactInstallerException( e.getMessage(), e );
63          }
64      }
65  }