Model


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3    *  JBoss Portal: The OpenSource Portal  *
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9   package org.jboss.portal.core.security;
10  
11  import java.util.Iterator  ;
12  import java.util.Map  ;
13  
14  /**
15   * A query interface on a hierarchical set of items. This interface is provided
16   * by the portlet.
17   * 
18   * @author <a HREF="mailto:julien@jboss.org">Julien Viet</a>
19   * @version $Revision: 1.3 $
20   */
21  public interface Model
22  {
23     /**
24      * Return the specified item or null if it does not exist.
25      *  
26      * @param path the item path
27      * @return the item 
28      */
29     Item getItem(String  [] path);
30     
31     /**
32      * Return the children items for the given path or null if the item does not exist.
33      * 
34      * @param path the item path
35      * @return an iterator over the items 
36      */
37     Iterator   getChildren(String  [] path);
38  
39     /**
40      * Returns a map of permission descriptions.
41      * 
42      * @return the permission descriptions map
43      */
44     Map   getPermissionDescriptions();
45     
46     /**
47      * Return true if the source permission implies the target permission.
48      * 
49      * @param sourcePermission
50      * @param targetPermission
51      * @return true is source implies target
52      * @throws IllegalArgumentException if sourcePermission or targetPermission is null
53      */
54     boolean implies(String   sourcePermission, String   targetPermission) throws IllegalArgumentException  ;
55     
56     /**
57      * Return the default scheme.
58      * 
59      * @return the default scheme
60      */
61     Scheme getDefaultScheme();
62  }
63
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