Fri, 24 Sep 2010 22:42:14 -0700
6891766: Vulnerabilities in use of reflection in CORBA
Reviewed-by: hawtin
1 /*
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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10 *
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14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
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24 */
26 package org.omg.CORBA;
28 /**
29 * An object used in the DII and DSI to describe
30 * arguments and return values. <code>NamedValue</code> objects
31 * are also used in the <code>Context</code>
32 * object routines to pass lists of property names and values.
33 * <P>
34 * A <code>NamedValue</code> object contains:
35 * <UL>
36 * <LI>a name -- If the <code>NamedValue</code> object is used to
37 * describe arguments to a request, the name will be an argument
38 * identifier specified in the OMG IDL interface definition
39 * for the operation being described.
40 * <LI>a value -- an <code>Any</code> object
41 * <LI>an argument mode flag -- one of the following:
42 * <UL>
43 * <LI><code>ARG_IN.value</code>
44 * <LI><code>ARG_OUT.value</code>
45 * <LI><code>ARG_INOUT.value</code>
46 * <LI>zero -- if this <code>NamedValue</code> object represents a property
47 * in a <code>Context</code> object rather than a parameter or
48 * return value
49 * </UL>
50 * </UL>
51 * <P>
52 * The class <code>NamedValue</code> has three methods, which
53 * access its fields. The following code fragment demonstrates
54 * creating a <code>NamedValue</code> object and then accessing
55 * its fields:
56 * <PRE>
57 * ORB orb = ORB.init(args, null);
58 * String s = "argument_1";
59 * org.omg.CORBA.Any myAny = orb.create_any();
60 * myAny.insert_long(12345);
61 * int in = org.omg.CORBA.ARG_IN.value;
63 * org.omg.CORBA.NamedValue nv = orb.create_named_value(
64 * s, myAny, in);
65 * System.out.println("This nv name is " + nv.name());
66 * try {
67 * System.out.println("This nv value is " + nv.value().extract_long());
68 * System.out.println("This nv flag is " + nv.flags());
69 * } catch (org.omg.CORBA.BAD_OPERATION b) {
70 * System.out.println("extract failed");
71 * }
72 * </PRE>
73 *
74 * <P>
75 * If this code fragment were put into a <code>main</code> method,
76 * the output would be something like the following:
77 * <PRE>
78 * This nv name is argument_1
79 * This nv value is 12345
80 * This nv flag is 1
81 * </PRE>
82 * <P>
83 * Note that the method <code>value</code> returns an <code>Any</code>
84 * object. In order to access the <code>long</code> contained in the
85 * <code>Any</code> object,
86 * we used the method <code>extract_long</code>.
87 *
88 * @see Any
89 * @see ARG_IN
90 * @see ARG_INOUT
91 * @see ARG_OUT
92 *
93 * @since JDK1.2
94 */
96 public abstract class NamedValue {
98 /**
99 * Retrieves the name for this <code>NamedValue</code> object.
100 *
101 * @return a <code>String</code> object representing
102 * the name of this <code>NamedValue</code> object
103 */
105 public abstract String name();
107 /**
108 * Retrieves the value for this <code>NamedValue</code> object.
109 *
110 * @return an <code>Any</code> object containing
111 * the value of this <code>NamedValue</code> object
112 */
114 public abstract Any value();
116 /**
117 * Retrieves the argument mode flag for this <code>NamedValue</code> object.
118 *
119 * @return an <code>int</code> representing the argument
120 * mode for this <code>NamedValue</code> object
121 */
123 public abstract int flags();
125 }