Examples of java.security.Permission.newPermissionCollection()

java.security.Permission.newPermissionCollection()
Returns an empty PermissionCollection for a given Permission object, or null if one is not defined. Subclasses of class Permission should override this if they need to store their permissions in a particular PermissionCollection object in order to provide the correct semantics when the PermissionCollection.implies method is called. If null is returned, then the caller of this method is free to store permissions of this type in any PermissionCollection they choose (one that uses a Hashtable, one that uses a Vector, etc). @return a new PermissionCollection object for this type of Permission, or null if one is not defined.

    // java.security.AccessControlContext(java.security.ProtectionDomain [])


    // Create a permission which is not normally granted
    final Permission perm = new PropertyPermission("java.class.path",
        "read");
    PermissionCollection col = perm.newPermissionCollection();
    col.add(perm);
    final ProtectionDomain pd = new ProtectionDomain(null, col);
    AccessControlContext acc = new AccessControlContext(
        new ProtectionDomain[] { pd });
    try {

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        Permission sp1 = new SecurityPermission("aaa");
        Permission sp2 = new SecurityPermission("bbb");
        Permission sp3 = new SecurityPermission("ccc");
        Permission sp4 = new SecurityPermission("ddd");
        Permission spZ = new SecurityPermission("zzz");
        PermissionCollection pcZ = spZ.newPermissionCollection();
        pcZ.add(spZ);
        CodeSource cs = new CodeSource(null, (Certificate[])null);
        CodeSource cs2 = new CodeSource(new URL("http://a.b.c"),
            (Certificate[])null);
        ProtectionDomain pd1 = new ProtectionDomain(cs, null);

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   * @tests java.security.Permission#newPermissionCollection()
   */
  public void test_newPermissionCollection() {
    // test method java.security.permission.newPermissionCollection
    Permission permi = new ConcretePermission();
    PermissionCollection permiCollect = permi.newPermissionCollection();
    assertNull("newPermissionCollector of the abstract class "
        + "permission did not return a null instance "
        + "of permissionCollection", permiCollect);
  }

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    public void testImpliesCollection(){
        
        Permission ap = new AllPermission();
        Permission p = new DelegationPermission("\"AAA\" \"BBB\"");
        PermissionCollection pc = p.newPermissionCollection();
        assertFalse(pc.implies(ap));
        assertFalse(pc.implies(p));
        pc.add(p);
        assertTrue(pc.implies(p));
        assertFalse(pc.implies(null));

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        assertFalse(dp1.implies(new ServicePermission("aaa", "accept")));
    }


  public void testElements() throws Exception {
        Permission p = new DelegationPermission("\"AAA\" \"BBB\"");
        PermissionCollection pc = p.newPermissionCollection();
        try {
            pc.elements().nextElement();
            fail("expected NoSuchElementException");
        } catch (NoSuchElementException e) {
        }

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    public void testImpliesCollection(){
        
        Permission ap = new AllPermission();
        Permission p = new ServicePermission("AAA", "accept");
        PermissionCollection pc = p.newPermissionCollection();
        assertFalse(pc.implies(ap));
        assertFalse(pc.implies(p));
        pc.add(p);
        assertTrue(pc.implies(p));
        assertFalse(pc.implies(null));

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    }
    
    public void testElements() {
        Permission p = new ServicePermission("AAA", "accept");
        PermissionCollection pc = p.newPermissionCollection();
        
    try {
      pc.elements().nextElement();
      fail("expected NoSuchElementException");
    } catch (NoSuchElementException e) {

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    public void testImpliesCollection(){
        
        Permission ap = new AllPermission();
        Permission p = new DelegationPermission("\"AAA\" \"BBB\"");
        PermissionCollection pc = p.newPermissionCollection();
        assertFalse(pc.implies(ap));
        assertFalse(pc.implies(p));
        pc.add(p);
        assertTrue(pc.implies(p));
        assertFalse(pc.implies(null));

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        assertFalse(dp1.implies(new ServicePermission("aaa", "accept")));
    }


  public void testElements() throws Exception {
        Permission p = new DelegationPermission("\"AAA\" \"BBB\"");
        PermissionCollection pc = p.newPermissionCollection();
        try {
            pc.elements().nextElement();
            fail("expected NoSuchElementException");
        } catch (NoSuchElementException e) {
        }

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    public void testImpliesCollection(){
        
        Permission ap = new AllPermission();
        Permission p = new ServicePermission("AAA", "accept");
        PermissionCollection pc = p.newPermissionCollection();
        assertFalse(pc.implies(ap));
        assertFalse(pc.implies(p));
        pc.add(p);
        assertTrue(pc.implies(p));
        assertFalse(pc.implies(null));

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