ContextServlet.java

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/*
 * Turró i Cutiller Foundation. License notice.
 * Copyright (C) 2011 Lluis Turró Cutiller <http://www.turro.org/>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.turro.elephant.servlet.context;
 
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.turro.action.Closeables;
import org.turro.action.IAgreements;
import org.turro.action.Initializers;
import org.turro.action.Interceptors;
import org.turro.elephant.context.ElephantApplication;
import org.turro.elephant.context.ElephantContext;
import org.turro.elephant.context.HeadlessApplication;
import org.turro.elephant.context.IConstructor;
import org.turro.elephant.direct.DirectContents;
import org.turro.sso.SSO;
 
@WebServlet(name = "Context", urlPatterns = {"", "/"})
public class ContextServlet extends HttpServlet {
 
  @Override
  protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    req.setAttribute("el_app", new ElephantApplication(req, resp));
    super.service(req, resp);
  }
 
  protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    if(DirectContents.isDirectContent(request)) {
      DirectContents.executeDirectContents(getServletContext(), request, response);
      return; // moved
    }
    IConstructor constructor = ElephantContext.getConstructor(request, response);
    HeadlessApplication.getInstance(constructor);
    Initializers.initialize(constructor);
    if(IAgreements.checkAgreements(request, response)) {
      if(ElephantContext.getUseSSO() && SSO.hasSSO(request) && constructor.getUser() == null) {
        SSO.getSSO().navigateAuthenticatedTo(constructor.getRequest(), constructor.getResponse());
      } else {
        if(!Interceptors.executeWeb(constructor)) {
          constructor.startConstruction();
        }
      }
    }
  }
 
  @Override
  public void destroy() {
    super.destroy();
    Closeables.closeElephant();
  }
 
  // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
  @Override
  protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    processRequest(request, response);
  }
  
  @Override
  protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    processRequest(request, response);
  }
  
  @Override
  public String getServletInfo() {
    return "Context servlet for Elephant";
  }
 
  // </editor-fold>
 
}