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 }