Node


1   /*****************************************
2    *                                       *
3    *  JBoss Portal: The OpenSource Portal  *
4    *                                       *
5    *   Distributable under LGPL license.   *
6    *   See terms of license at gnu.org.    *
7    *                                       *
8    *****************************************/
9   package org.jboss.portal.common.tree;
10  
11  import org.jboss.portal.common.FQN;
12  
13  import java.util.Map  ;
14  import java.util.prefs.NodeChangeListener  ;
15  
16  /**
17   * A node of the tree.
18   *
19   * @author <a HREF="mailto:julien@jboss.org">Julien Viet</a>
20   * @version $Revision: 1.1 $
21   */
22  public interface Node
23  {
24     /**
25      * Return the node id. 
26      */
27     FQN getID();
28  
29     /**
30      * Return the node name.
31      */
32     String   getName();
33  
34     /**
35      * Return the property for this key or null if it does not exist.
36      */
37     Object   getProperty(String   name);
38  
39     /**
40      * Returns a specific child of this node or null if it does not exist.
41      */
42     Node getChild(String   key);
43  
44     /**
45      * Returns a immutable map containing all the children of this node.
46      */
47     Map   getChildren();
48  }
49

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