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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.jdom2.Element;
31  
32  /**
33   * @author <a href='mailto:rahul.thakur.xdev@gmail.com'>Rahul Thakur</a>
34   */
35  public class RequirementsElement extends AbstractMergeableElementList {
36      public static final DescriptorTag TAG = new DescriptorTag("requirements", true, RequirementsElement.class);
37  
38      public RequirementsElement(Element element) {
39          super(element);
40      }
41  
42      protected boolean isExpectedElementType(Mergeable me) {
43          return me instanceof RequirementsElement;
44      }
45  
46      public DescriptorTag[] getAllowedTags() {
47          return new DescriptorTag[] {RequirementElement.TAG};
48      }
49  
50      protected List getElementNamesForConflictResolution(List defaultList) {
51          // we return the keys that we know we want to lookup to identify and
52          // resolve conflicts.
53          List l = new ArrayList();
54          l.add(ComponentElement.ROLE.getTagName());
55          // TODO: add this back, but a test will fail (based on a role with no hint, which shouldn't be legal)
56          //        l.add( ComponentElement.ROLE_HINT.getTagName() );
57          return l;
58      }
59  
60      protected String getTagNameForRecurringMergeable() {
61          return RequirementElement.TAG.getTagName();
62      }
63  }