Examples of java.security.Permission.implies()

java.security.Permission.implies()
Checks if the specified permission's actions are "implied by" this object's actions.
This must be implemented by subclasses of Permission, as they are the only ones that can impose semantics on a Permission object.
The implies method is used by the AccessController to determine whether or not a requested permission is implied by another permission that is known to be valid in the current execution context. @param permission the permission to check against. @return true if the specified permission is implied by this object,false if not.

                    }
                    else
                    {
                        // Implies logic, the one with one permission
                        // is implied by the other but not vice-versa.
                        assertTrue(p.implies(base));
                        assertFalse(base.implies(p));
                        
                        // Names in canonical form
                        int f;
                        int s;

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                assertFalse(pi.equals(pj));
                assertFalse(pj.equals(pi));
                
                assertFalse(pi.implies(pj));
                assertFalse(pj.implies(pi));
            }
        }
    }
    
    private void assertEquivalentPermissions(Permission p1,

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                        x = perms.get(path);
                }


                if (x != null) {
                        // we have a direct hit!
                        return x.implies(permission);
                }


                // work our way up the tree...
                int last, offset;

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                        synchronized (this) {
                                x = perms.get(path);
                        }


                        if (x != null) {
                                return x.implies(permission);
                        }
                        offset = last - 1;
                }


                if (log.isLoggable(Level.FINE))

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     */
    public void test_Permission() throws Exception {
        uc.connect();
        Permission permission = uc.getPermission();
        assertNotNull(permission);
        permission.implies(new SocketPermission("localhost","connect"));
    }


    class MockNonCachedResponseCache extends ResponseCache {


        public CacheResponse get(URI arg0, String arg1, Map arg2)

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            AclEntry entry = entries.nextElement();
            Enumeration<Permission> permissions = entry.permissions();
            while ( permissions.hasMoreElements() ) 
            {
                Permission perm = permissions.nextElement();
                if ( perm.implies( permission ) ) 
                {
                    principals.add( entry.getPrincipal() );
                }
            }
        }

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     */
    public void test_Permission() throws Exception {
        uc.connect();
        Permission permission = uc.getPermission();
        assertNotNull(permission);
        permission.implies(new SocketPermission("localhost","connect"));
    }


    class MockNonCachedResponseCache extends ResponseCache {


        public CacheResponse get(URI arg0, String arg1, Map arg2)

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     */
    public void test_Permission() throws Exception {
        uc.connect();
        Permission permission = uc.getPermission();
        assertNotNull(permission);
        permission.implies(new SocketPermission("localhost","connect"));
    }


    class MockNonCachedResponseCache extends ResponseCache {


        public CacheResponse get(URI arg0, String arg1, Map arg2)

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     */
    public boolean implies(Permission permission) {
        Enumeration e = permissions.elements();
        while (e.hasMoreElements()) {
            Permission p = (Permission)e.nextElement();
            if (p.implies(permission))
                return true;
        }
        
        return false;
    }

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        // The argument is an instanceof WebResourcePermission 
        Permission pA = new WebResourcePermission("/foo", "");
        Permission pB = new WebUserDataPermission("/foo", "");
        
        assertFalse(pA.implies(pB));
        assertFalse(pB.implies(pA));
    
        pA = new WebResourcePermission("/foo", "");
        pB = new WebResourcePermission("/foo", "GET,POST");
        
        assertTrue(pA.implies(pB));

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