ResponseInterceptorHandler.java

/*
 * This file is part of ARSnova Backend.
 * Copyright (C) 2012-2017 The ARSnova Team
 *
 * ARSnova Backend is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * ARSnova Backend is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package de.thm.arsnova.web;

import de.thm.arsnova.services.ResponseProviderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.handler.HandlerInterceptorAdapter;

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

/**
 *  Injects a {@link HttpServletResponse} into {@link ResponseProviderService} to allow access to it outside of
 *  Controllers.
 */
@Component
public class ResponseInterceptorHandler extends HandlerInterceptorAdapter {

	@Autowired
	ResponseProviderService responseProviderService;

	@Override
	public boolean preHandle(
		HttpServletRequest request,
		HttpServletResponse response,
		Object handler
	) throws Exception {
		responseProviderService.setResponse(response);

		return true;
	}

}