View Javadoc
1   package org.apache.maven.tools.plugin.javadoc;
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 com.sun.tools.doclets.Taglet;
23  
24  import org.apache.maven.tools.plugin.extractor.javadoc.JavadocMojoAnnotation;
25  
26  import java.util.Map;
27  
28  /**
29   * The <tt>@threadSafe</tt> tag is used to indicate that a mojo is thread-safe and can be run in parallel
30   * <br/>
31   * The following is a sample declaration:
32   * <pre>
33   * &#x2f;&#x2a;&#x2a;
34   * &#x20;&#x2a; Dummy Mojo.
35   * &#x20;&#x2a;
36   * &#x20;&#x2a; &#64;threadSafe &lt;true|false&gt;
37   * &#x20;&#x2a; ...
38   * &#x20;&#x2a;&#x2f;
39   * public class MyMojo extends AbstractMojo{}
40   * </pre>
41   * To use it, calling the <code>Javadoc</code> tool with the following:
42   * <pre>
43   * javadoc ... -taglet 'org.apache.maven.tools.plugin.javadoc.MojoThreadSafeTypeTaglet'
44   * </pre>
45   * <b>Note</b>: This taglet is similar to call the <code>Javadoc</code> tool with the following:
46   * <pre>
47   * javadoc ... -tag 'threadSafe:t:Indicates the mojo is thread-safe'
48   * </pre>
49   *
50   * @see <a href="package-summary.html#package_description">package-summary.html</a>
51   *
52   * @author Kristian Rosenvold
53   * @version $Id: MojoThreadSafeTypeTaglet.html 934731 2015-01-01 22:17:21Z hboutemy $
54   */
55  public class MojoThreadSafeTypeTaglet
56      extends AbstractMojoTypeTaglet
57  {
58      /** The Javadoc annotation */
59      private static final String NAME = JavadocMojoAnnotation.THREAD_SAFE;
60  
61      /** The Javadoc text which will be added to the generated page. */
62      protected static final String HEADER = "Mojo is thread safe";
63  
64      /**
65       * @return By default, return the string defined in {@linkplain #HEADER}.
66       * @see AbstractMojoTaglet#getHeader()
67       * @see #HEADER
68       */
69      public String getHeader()
70      {
71          return HEADER;
72      }
73  
74      /**
75       * @return <code>true|false</code> since <code>@requiresProject</code> has value.
76       * @see AbstractMojoTaglet#getAllowedValue()
77       */
78      public String getAllowedValue()
79      {
80          return "true|false";
81      }
82  
83      /**
84       * @return <code>null</code> since <code>@requiresProject</code> has no parameter.
85       * @see AbstractMojoTaglet#getAllowedParameterNames()
86       */
87      public String[] getAllowedParameterNames()
88      {
89          return null;
90      }
91  
92      /**
93       * @return By default, return the name of this taglet.
94       * @see com.sun.tools.doclets.Taglet#getName()
95       * @see MojoThreadSafeTypeTaglet#NAME
96       */
97      public String getName()
98      {
99          return NAME;
100     }
101 
102     /**
103      * Register this Taglet.
104      *
105      * @param tagletMap the map to register this tag to.
106      */
107     public static void register( Map<String, Taglet> tagletMap )
108     {
109         MojoThreadSafeTypeTaglet tag = new MojoThreadSafeTypeTaglet();
110         Taglet t = tagletMap.get( tag.getName() );
111         if ( t != null )
112         {
113             tagletMap.remove( tag.getName() );
114         }
115         tagletMap.put( tag.getName(), tag );
116     }
117 }