001/*
002 * Copyright 2002-2014 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.web.method.annotation;
018
019import org.springframework.core.MethodParameter;
020import org.springframework.web.bind.support.SessionStatus;
021import org.springframework.web.bind.support.WebDataBinderFactory;
022import org.springframework.web.context.request.NativeWebRequest;
023import org.springframework.web.method.support.HandlerMethodArgumentResolver;
024import org.springframework.web.method.support.ModelAndViewContainer;
025
026/**
027 * Resolves a {@link SessionStatus} argument by obtaining it from
028 * the {@link ModelAndViewContainer}.
029 *
030 * @author Rossen Stoyanchev
031 * @since 3.1
032 */
033public class SessionStatusMethodArgumentResolver implements HandlerMethodArgumentResolver {
034
035        @Override
036        public boolean supportsParameter(MethodParameter parameter) {
037                return SessionStatus.class == parameter.getParameterType();
038        }
039
040        @Override
041        public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer,
042                        NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
043
044                return mavContainer.getSessionStatus();
045        }
046
047}