1 /*
2 * Copyright 2005-2010 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.method;
18
19 import org.springframework.core.MethodParameter;
20 import org.springframework.ws.context.MessageContext;
21
22 /**
23 * Strategy interface used to resolve method parameters into arguments. This interface is used to allow the {@link
24 * org.springframework.ws.server.endpoint.adapter.DefaultMethodEndpointAdapter DefaultMethodEndpointAdapter} to be
25 * indefinitely extensible.
26 *
27 * @author Arjen Poutsma
28 * @since 2.0
29 */
30 public interface MethodArgumentResolver {
31
32 /**
33 * Indicates whether the given {@linkplain MethodParameter method parameter} is supported by this resolver.
34 *
35 * @param parameter the method parameter to check
36 * @return {@code true} if this resolver supports the supplied parameter; {@code false} otherwise
37 */
38 boolean supportsParameter(MethodParameter parameter);
39
40 /**
41 * Resolves the given parameter into a method argument.
42 *
43 * @param messageContext the current message context
44 * @param parameter the parameter to resolve to an argument. This parameter must have previously been passed to
45 * the {@link #supportsParameter(MethodParameter)} method of this interface, which must
46 * have returned {@code true}.
47 * @return the resolved argument. May be {@code null}.
48 * @throws Exception in case of errors
49 */
50 Object resolveArgument(MessageContext messageContext, MethodParameter parameter) throws Exception;
51
52 }