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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.jdom2.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          ISOLATION_REALM,
48          CONFIGURATION,
49          RequirementsElement.TAG };
50  
51      static final DescriptorTag TAG = new DescriptorTag( "component", true, ComponentElement.class );
52  
53      static final DescriptorTag ROLE = new DescriptorTag( "role" );
54  
55      static final DescriptorTag ROLE_HINT = new DescriptorTag( "role-hint" );
56  
57      static final DescriptorTag OPTIONAL = new DescriptorTag( "optional" );
58      
59      static final DescriptorTag ISOLATION_REALM = new DescriptorTag( "isolated-realm" );
60  
61      private static final DescriptorTag DESCRIPTION = new DescriptorTag( "description" );
62      
63      private static final DescriptorTag CONFIGURATION = new DescriptorTag( "configuration" );
64  
65      static final DescriptorTag FIELD_NAME = new DescriptorTag( "field-name" );
66  
67      private static final DescriptorTag IMPLEMENTATION = new DescriptorTag( "implementation" );
68  
69      private static final DescriptorTag LIFECYCLE_HANDLER = new DescriptorTag( "lifecycle-handler", false, null );
70  
71      public ComponentElement( Element element )
72      {
73          super( element );
74      }
75  
76      protected boolean isExpectedElementType( Mergeable me )
77      {
78          return me instanceof ComponentElement;
79      }
80  
81      public DescriptorTag[] getAllowedTags()
82      {
83          return allowedTags;
84      }
85  }