/*
 * Copyright 2002-2016 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.springframework.security.web.savedrequest;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Null implementation of <tt>RequestCache</tt>. Typically used when creation of a session
 * is not desired.
 *
 * @author Luke Taylor
 * @since 3.0
 */
public class NullRequestCache implements RequestCache {

	public SavedRequest getRequest(HttpServletRequest request,
			HttpServletResponse response) {
		return null;
	}

	public void removeRequest(HttpServletRequest request, HttpServletResponse response) {

	}

	public void saveRequest(HttpServletRequest request, HttpServletResponse response) {
	}

	public HttpServletRequest getMatchingRequest(HttpServletRequest request,
			HttpServletResponse response) {
		return null;
	}

}
