Source code: com/sun/xacml/cond/FunctionProxy.java
1
2 /*
3 * @(#)FunctionProxy.java
4 *
5 * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are met:
9 *
10 * 1. Redistribution of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer.
12 *
13 * 2. Redistribution in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * Neither the name of Sun Microsystems, Inc. or the names of contributors may
18 * be used to endorse or promote products derived from this software without
19 * specific prior written permission.
20 *
21 * This software is provided "AS IS," without a warranty of any kind. ALL
22 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
23 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
24 * OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN")
25 * AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE
26 * AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
27 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST
28 * REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL,
29 * INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY
30 * OF LIABILITY, ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE,
31 * EVEN IF SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
32 *
33 * You acknowledge that this software is not designed or intended for use in
34 * the design, construction, operation or maintenance of any nuclear facility.
35 */
36
37 package com.sun.xacml.cond;
38
39 import org.w3c.dom.Node;
40
41
42 /**
43 * Used by abstract functions to define how new functions are created by
44 * the factory. Note that all functions using XPath are defined to be
45 * abstract functions, so they must be created using this interface.
46 *
47 * @since 1.0
48 * @author Seth Proctor
49 */
50 public interface FunctionProxy
51 {
52
53 /**
54 * Creates an instance of some abstract function. If the function
55 * being created is not using XPath, then the version parameter can be
56 * ignored, otherwise a value must be present and the version must
57 * be acceptable.
58 *
59 * @param root the DOM root of the apply statement containing the function
60 * @param xpathVersion the version specified in the contianing policy, or
61 * null if no version was specified
62 *
63 * @return the function
64 *
65 * @throws Exception if the underlying code experienced any error
66 */
67 public Function getInstance(Node root, String xpathVersion)
68 throws Exception;
69
70 }