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1   package org.apache.maven.its.plugins;
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 org.apache.maven.plugin.AbstractMojo;
23  import org.apache.maven.plugin.MojoExecutionException;
24  import org.apache.maven.plugin.MojoFailureException;
25  import org.codehaus.plexus.velocity.VelocityComponent;
26  
27  /**
28   * @goal velocity
29   * @phase validate
30   */
31  public class VelocityMojo
32      extends AbstractMojo
33  {
34      /**
35       * @component
36       */
37      protected VelocityComponent velocityComponent;
38  
39      public void execute()
40          throws MojoExecutionException, MojoFailureException
41      {
42          // velocityComponent should not be null
43          velocityComponent.getEngine();
44  
45          try
46          {
47              // velocityComponent engine should not be null
48              // this is the real test to check that we got the right Initializable interface in both Plexus and the
49              // component
50              /*
51               * NOTE: There's a bug in the plexus-velocity:1.1.7 component that fails to transform "/template.vm" into
52               * a proper resource name before searching the context class loader so we avoid the leading slash here.
53               */
54              velocityComponent.getEngine().getTemplate( "template.vm" );
55          }
56          catch ( Exception e )
57          {
58              throw new MojoExecutionException( e.getMessage(), e );
59          }
60      }
61  }