Sat, 16 Dec 2017 20:19:28 +0100
implements automatic menu generation from module information
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2017 Mike Becker. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29 package de.uapcore.lightpit;
31 import java.io.IOException;
32 import javax.servlet.ServletException;
33 import javax.servlet.http.HttpServlet;
34 import javax.servlet.http.HttpServletRequest;
35 import javax.servlet.http.HttpServletResponse;
36 import org.slf4j.Logger;
37 import org.slf4j.LoggerFactory;
39 /**
40 * A special implementation of a HTTPServlet which is focused on implementing
41 * the necessary functionality for {@link LightPITModule}s.
42 */
43 public abstract class AbstractLightPITServlet extends HttpServlet {
45 private static final Logger LOG = LoggerFactory.getLogger(AbstractLightPITServlet.class);
48 /**
49 * Gives implementing modules access to the {@link ModuleManager}.
50 * @return the module manager
51 */
52 protected final ModuleManager getModuleManager() {
53 return (ModuleManager) getServletContext().getAttribute(ModuleManager.SC_ATTR_NAME);
54 }
56 private void addPathInformation(HttpServletRequest req) {
57 final String path = req.getServletPath()+"/"+req.getPathInfo();
58 req.setAttribute(Constants.REQ_ATTR_PATH, path);
59 }
61 private void forwardToFullView(HttpServletRequest req, HttpServletResponse resp)
62 throws IOException, ServletException {
64 addPathInformation(req);
66 final ModuleManager mm = getModuleManager();
67 req.setAttribute(Constants.REQ_ATTR_MENU, mm.getMainMenu());
69 req.getRequestDispatcher(Functions.jspPath("full.jsp")).forward(req, resp);
70 }
72 @Override
73 protected final void doGet(HttpServletRequest req, HttpServletResponse resp)
74 throws ServletException, IOException {
75 forwardToFullView(req, resp);
76 }
78 @Override
79 protected final void doPost(HttpServletRequest req, HttpServletResponse resp)
80 throws ServletException, IOException {
82 forwardToFullView(req, resp);
83 }
84 }