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1   package org.apache.maven.plugin.changes;
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.io.File;
23  import java.util.Iterator;
24  import java.util.List;
25  
26  import org.apache.maven.plugin.AbstractMojo;
27  import org.apache.maven.plugin.MojoExecutionException;
28  import org.apache.maven.plugin.MojoFailureException;
29  import org.apache.maven.plugin.changes.schema.ChangesSchemaValidator;
30  import org.apache.maven.plugin.changes.schema.SchemaValidatorException;
31  import org.apache.maven.plugin.changes.schema.XmlValidationHandler;
32  import org.xml.sax.SAXException;
33  
34  /**
35   * 
36   * Goal which validate the <code>changes.xml</code> file.
37   * 
38   * @goal changes-validate
39   * 
40   * @author <a href="mailto:olamy@apache.org">olamy</a>
41   * @version $Id: ChangesValidatorMojo.html 816598 2012-05-08 12:46:49Z hboutemy $
42   * @since 2.1
43   * @threadSafe
44   */
45  public class ChangesValidatorMojo
46      extends AbstractMojo
47  {
48  
49      /**
50       * @component role="org.apache.maven.plugin.changes.schema.ChangesSchemaValidator" roleHint="default"
51       */
52      private ChangesSchemaValidator changesSchemaValidator;
53  
54      /**
55       * The changes xsd version.
56       *
57       * @parameter expression="${changes.xsdVersion}" default-value="1.0.0"
58       */
59      private String changesXsdVersion;
60  
61      /**
62       * Mojo failure if validation failed. If not and validation failed only a warning will be logged.
63       *
64       * @parameter expression="${changes.validate.failed}" default-value="false"
65       */
66      private boolean failOnError;
67  
68      /**
69       * The path of the <code>changes.xml</code> file that will be converted into an HTML report.
70       *
71       * @parameter expression="${changes.xmlPath}" default-value="src/changes/changes.xml"
72       */
73      private File xmlPath;
74  
75      /** 
76       * @see org.apache.maven.plugin.Mojo#execute()
77       */
78      public void execute()
79          throws MojoExecutionException, MojoFailureException
80      {
81  
82          if ( !xmlPath.exists() )
83          {
84              getLog().warn( "changes.xml file " + xmlPath.getAbsolutePath() + " does not exist." );
85              return;
86          }
87  
88          try
89          {
90              XmlValidationHandler xmlValidationHandler = changesSchemaValidator
91                  .validateXmlWithSchema( xmlPath, changesXsdVersion, failOnError );
92              boolean hasErrors = !xmlValidationHandler.getErrors().isEmpty();
93              if ( hasErrors )
94              {
95                  logSchemaValidation( xmlValidationHandler.getErrors() );
96                  if ( failOnError )
97                  {
98                      throw new MojoExecutionException( "changes.xml file " + xmlPath.getAbsolutePath()
99                          + " is not valid, see previous errors." );
100                 }
101                 else
102                 {
103                     getLog().info( " skip previous validation errors due to failOnError=false." );
104                 }
105             }
106         }
107         catch ( SchemaValidatorException e )
108         {
109             if ( failOnError )
110             {
111                 throw new MojoExecutionException( "failed to validate changes.xml file " + xmlPath.getAbsolutePath()
112                     + ": " + e.getMessage(), e );
113             }
114         }
115     }
116 
117     private void logSchemaValidation( List /*SAXException*/errors )
118     {
119         getLog().warn( "failed to validate changes.xml file " + xmlPath.getAbsolutePath() );
120         getLog().warn( "validation errors: " );
121         for ( Iterator iterator = errors.iterator(); iterator.hasNext(); )
122         {
123             SAXException error = (SAXException) iterator.next();
124             getLog().warn( error.getMessage() );
125         }
126     }
127 
128 }