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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 java.util.ArrayList;
28  import java.util.List;
29  
30  import org.jdom.Element;
31  
32  /**
33   * @author <a href='mailto:rahul.thakur.xdev@gmail.com'>Rahul Thakur</a>
34   * @version $Id$
35   */
36  public class ComponentsElement
37      extends AbstractMergeableElementList
38  {
39      static final DescriptorTag TAG = new DescriptorTag( "components", true, ComponentsElement.class );
40  
41      private List conflictVerificationkeys = new ArrayList();
42  
43      public ComponentsElement( Element element )
44      {
45          super( element );
46  
47          conflictVerificationkeys.add( ComponentElement.ROLE.getTagName() );
48          conflictVerificationkeys.add( ComponentElement.ROLE_HINT.getTagName() );
49      }
50  
51      public DescriptorTag[] getAllowedTags()
52      {
53          return new DescriptorTag[]{ComponentElement.TAG};
54      }
55  
56      protected boolean isExpectedElementType( Mergeable me )
57      {
58          return ( me instanceof ComponentsElement );
59      }
60  
61      protected List getElementNamesForConflictChecks( List defaultList )
62      {
63          // Allow to return custom keys for conflict checks/resolution.
64          return this.conflictVerificationkeys;
65      }
66  
67      protected String getTagNameForRecurringMergeable()
68      {
69          return ComponentElement.TAG.getTagName();
70      }
71  
72      protected List getElementNamesForConflictResolution( List defaultList )
73      {
74          // TODO: how is this different from getElementNamesForConflictChecks?
75          List l = new ArrayList();
76          l.add( ComponentElement.ROLE.getTagName() );
77          l.add( ComponentElement.ROLE_HINT.getTagName() );
78          return l;
79      }
80  }