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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 816588 2012-05-08 12:37:27Z hboutemy $
42   * @since 2.1
43   */
44  public class ChangesValidatorMojo
45      extends AbstractMojo
46  {
47  
48      /**
49       * The path of the <code>changes.xml</code> file that will be converted into an HTML report.
50       *
51       * @parameter expression="${changes.xmlPath}" default-value="src/changes/changes.xml"
52       */
53      private File xmlPath;
54      
55      /**
56       * The changes xsd version.
57       *
58       * @parameter expression="${changes.xsdVersion}" default-value="1.0.0"
59       */
60      private String changesXsdVersion;
61      
62      /**
63       * 
64       * @component role="org.apache.maven.plugin.changes.schema.ChangesSchemaValidator" roleHint="default"
65       *  
66       */
67      private ChangesSchemaValidator changesSchemaValidator;
68      
69      /**
70       * Mojo failure if validation failed. If not and validation failed only a warning will be logged.
71       *
72       * @parameter expression="${changes.validate.failed}" default-value="false"
73       */    
74      private boolean failOnError;
75      
76      /** 
77       * @see org.apache.maven.plugin.Mojo#execute()
78       */
79      public void execute()
80          throws MojoExecutionException, MojoFailureException
81      {
82  
83          if ( !xmlPath.exists() )
84          {
85              getLog().warn( "changes.xml file " + xmlPath.getAbsolutePath() + " does not exist." );
86              return;
87          }
88  
89          try
90          {
91              XmlValidationHandler xmlValidationHandler = changesSchemaValidator
92                  .validateXmlWithSchema( xmlPath, changesXsdVersion, failOnError );
93              boolean hasErrors = !xmlValidationHandler.getErrors().isEmpty();
94              if ( hasErrors )
95              {
96                  logSchemaValidation( xmlValidationHandler.getErrors() );
97                  if ( failOnError )
98                  {
99                      throw new MojoExecutionException( "changes.xml file " + xmlPath.getAbsolutePath()
100                         + " is not valid, see previous errors." );
101                 }
102                 else
103                 {
104                     getLog().info( " skip previous validation errors due to failOnError=false." );
105                 }
106             }
107         }
108         catch ( SchemaValidatorException e )
109         {
110             if ( failOnError )
111             {
112                 throw new MojoExecutionException( "failed to validate changes.xml file " + xmlPath.getAbsolutePath()
113                     + ": " + e.getMessage(), e );
114             }
115         }
116     }
117 
118     private void logSchemaValidation( List /*SAXException*/errors )
119     {
120         getLog().warn( "failed to validate changes.xml file " + xmlPath.getAbsolutePath() );
121         getLog().warn( "validation errors: " );
122         for ( Iterator iterator = errors.iterator(); iterator.hasNext(); )
123         {
124             SAXException error = (SAXException) iterator.next();
125             getLog().warn( error.getMessage() );
126         }
127     }
128 
129 }