1 /*
2 * Copyright 2007 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.springframework.ws.server.endpoint.adapter;
18
19 import java.lang.reflect.Method;
20
21 import org.springframework.oxm.GenericMarshaller;
22 import org.springframework.oxm.GenericUnmarshaller;
23 import org.springframework.oxm.Marshaller;
24 import org.springframework.oxm.Unmarshaller;
25 import org.springframework.oxm.jaxb.Jaxb2Marshaller;
26 import org.springframework.ws.server.endpoint.MethodEndpoint;
27
28 /**
29 * Subclass of {@link MarshallingMethodEndpointAdapter} that supports {@link GenericMarshaller} and {@link
30 * GenericUnmarshaller}. More specifically, this adapter is aware of the {@link Method#getGenericParameterTypes()} and
31 * {@link Method#getGenericReturnType()}.
32 * <p/>
33 * Prefer to use this adapter rather than the plain {@link MarshallingMethodEndpointAdapter} in combination with Java 5
34 * marshallers, such as the {@link Jaxb2Marshaller}.
35 *
36 * @author Arjen Poutsma
37 * @since 1.0.2
38 */
39 public class GenericMarshallingMethodEndpointAdapter extends MarshallingMethodEndpointAdapter {
40
41 /**
42 * Creates a new <code>GenericMarshallingMethodEndpointAdapter</code>. The {@link Marshaller} and {@link
43 * Unmarshaller} must be injected using properties.
44 *
45 * @see #setMarshaller(org.springframework.oxm.Marshaller)
46 * @see #setUnmarshaller(org.springframework.oxm.Unmarshaller)
47 */
48 public GenericMarshallingMethodEndpointAdapter() {
49 }
50
51 /**
52 * Creates a new <code>GenericMarshallingMethodEndpointAdapter</code> with the given marshaller. If the given {@link
53 * Marshaller} also implements the {@link Unmarshaller} interface, it is used for both marshalling and
54 * unmarshalling. Otherwise, an exception is thrown.
55 * <p/>
56 * Note that all {@link Marshaller} implementations in Spring-WS also implement the {@link Unmarshaller} interface,
57 * so that you can safely use this constructor.
58 *
59 * @param marshaller object used as marshaller and unmarshaller
60 * @throws IllegalArgumentException when <code>marshaller</code> does not implement the {@link Unmarshaller}
61 * interface
62 */
63 public GenericMarshallingMethodEndpointAdapter(Marshaller marshaller) {
64 super(marshaller);
65 }
66
67 /**
68 * Creates a new <code>GenericMarshallingMethodEndpointAdapter</code> with the given marshaller and unmarshaller.
69 *
70 * @param marshaller the marshaller to use
71 * @param unmarshaller the unmarshaller to use
72 */
73 public GenericMarshallingMethodEndpointAdapter(Marshaller marshaller, Unmarshaller unmarshaller) {
74 super(marshaller, unmarshaller);
75 }
76
77 protected boolean supportsInternal(MethodEndpoint methodEndpoint) {
78 Method method = methodEndpoint.getMethod();
79 return supportsReturnType(method) && supportsParameters(method);
80 }
81
82 private boolean supportsReturnType(Method method) {
83 if (Void.TYPE.equals(method.getReturnType())) {
84 return true;
85 }
86 else {
87 if (getMarshaller() instanceof GenericMarshaller) {
88 return ((GenericMarshaller) getMarshaller()).supports(method.getGenericReturnType());
89 }
90 else {
91 return getMarshaller().supports(method.getReturnType());
92 }
93 }
94 }
95
96 private boolean supportsParameters(Method method) {
97 if (method.getParameterTypes().length != 1) {
98 return false;
99 }
100 else if (getUnmarshaller() instanceof GenericUnmarshaller) {
101 GenericUnmarshaller genericUnmarshaller = (GenericUnmarshaller) getUnmarshaller();
102 return genericUnmarshaller.supports(method.getGenericParameterTypes()[0]);
103 }
104 else {
105 return getUnmarshaller().supports(method.getParameterTypes()[0]);
106 }
107 }
108 }