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1   package org.codehaus.plexus.metadata.merge.support;
2   
3   /*
4    * The MIT License
5    *
6    * Copyright (c) 2006, The Codehaus
7    *
8    * Permission is hereby granted, free of charge, to any person obtaining a copy of
9    * this software and associated documentation files (the "Software"), to deal in
10   * the Software without restriction, including without limitation the rights to
11   * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
12   * of the Software, and to permit persons to whom the Software is furnished to do
13   * so, subject to the following conditions:
14   *
15   * The above copyright notice and this permission notice shall be included in all
16   * copies or substantial portions of the Software.
17   *
18   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24   * SOFTWARE.
25   */
26  
27  import org.jdom.Element;
28  
29  /**
30   * @author <a href='mailto:rahul.thakur.xdev@gmail.com'>Rahul Thakur</a>
31   * @version $Id$
32   */
33  public class ComponentElement
34      extends AbstractMergeableElement
35  {
36      /**
37       * Allowed elements/tags that we can expect under this element.
38       */
39      private final DescriptorTag[] allowedTags = {
40          ROLE,
41          ROLE_HINT,
42          OPTIONAL,
43          IMPLEMENTATION,
44          FIELD_NAME,
45          LIFECYCLE_HANDLER,
46          DESCRIPTION,
47          CONFIGURATION,
48          RequirementsElement.TAG };
49  
50      static final DescriptorTag TAG = new DescriptorTag( "component", true, ComponentElement.class );
51  
52      static final DescriptorTag ROLE = new DescriptorTag( "role" );
53  
54      static final DescriptorTag ROLE_HINT = new DescriptorTag( "role-hint" );
55  
56      static final DescriptorTag OPTIONAL = new DescriptorTag( "optional" );
57  
58      private static final DescriptorTag DESCRIPTION = new DescriptorTag( "description" );
59      
60      private static final DescriptorTag CONFIGURATION = new DescriptorTag( "configuration" );
61  
62      static final DescriptorTag FIELD_NAME = new DescriptorTag( "field-name" );
63  
64      private static final DescriptorTag IMPLEMENTATION = new DescriptorTag( "implementation" );
65  
66      private static final DescriptorTag LIFECYCLE_HANDLER = new DescriptorTag( "lifecycle-handler", false, null );
67  
68      public ComponentElement( Element element )
69      {
70          super( element );
71      }
72  
73      protected boolean isExpectedElementType( Mergeable me )
74      {
75          return me instanceof ComponentElement;
76      }
77  
78      public DescriptorTag[] getAllowedTags()
79      {
80          return allowedTags;
81      }
82  }