01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common Development
08: * and Distribution License("CDDL") (collectively, the "License"). You
09: * may not use this file except in compliance with the License. You can obtain
10: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
11: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
12: * language governing permissions and limitations under the License.
13: *
14: * When distributing the software, include this License Header Notice in each
15: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
16: * Sun designates this particular file as subject to the "Classpath" exception
17: * as provided by Sun in the GPL Version 2 section of the License file that
18: * accompanied this code. If applicable, add the following below the License
19: * Header, with the fields enclosed by brackets [] replaced by your own
20: * identifying information: "Portions Copyrighted [year]
21: * [name of copyright owner]"
22: *
23: * Contributor(s):
24: *
25: * If you wish your version of this file to be governed by only the CDDL or
26: * only the GPL Version 2, indicate your decision by adding "[Contributor]
27: * elects to include this software in this distribution under the [CDDL or GPL
28: * Version 2] license." If you don't indicate a single choice of license, a
29: * recipient has the option to distribute your version of this file under
30: * either the CDDL, the GPL Version 2 or to extend the choice of license to
31: * its licensees as provided above. However, if you add GPL Version 2 code
32: * and therefore, elected the GPL Version 2 license, then the option applies
33: * only if the new code is made subject to such option by the copyright
34: * holder.
35: */
36:
37: package com.sun.xml.ws.client.sei;
38:
39: import javax.jws.WebParam.Mode;
40: import javax.xml.ws.Holder;
41:
42: /**
43: * Gets a value from an object that represents a parameter passed
44: * as a method argument.
45: *
46: * <p>
47: * This abstraction hides the handling of {@link Holder}.
48: *
49: * <p>
50: * {@link ValueGetter} is a stateless behavior encapsulation.
51: *
52: * @author Kohsuke Kawaguchi
53: */
54: enum ValueGetter {
55: /**
56: * {@link ValueGetter} that works for {@link Mode#IN} parameter.
57: *
58: * <p>
59: * Since it's the IN mode, the parameter is not a {@link Holder},
60: * therefore the parameter itself is a value.
61: */
62: PLAIN() {
63: Object get(Object parameter) {
64: return parameter;
65: }
66: },
67: /**
68: * Creates {@link ValueGetter} that works for {@link Holder},
69: * which is {@link Mode#INOUT} or {@link Mode#OUT}.
70: *
71: * <p>
72: * In those {@link Mode}s, the parameter is a {@link Holder},
73: * so the value to be sent is obtained by getting the value of the holder.
74: */
75: HOLDER() {
76: Object get(Object parameter) {
77: if (parameter == null)
78: // the user is allowed to pass in null where a Holder is expected.
79: return null;
80: return ((Holder) parameter).value;
81: }
82: };
83:
84: /**
85: * Gets the value to be sent, from a parameter given as a method argument.
86: * @param parameter that is passed by proxy
87: * @return if it holder then its value, otherise parameter itself
88: */
89: abstract Object get(Object parameter);
90:
91: }
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