| /* |
| * Copyright (c) 2017, 2018 Oracle and/or its affiliates. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0, which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * This Source Code may also be made available under the following Secondary |
| * Licenses when the conditions for such availability set forth in the |
| * Eclipse Public License v. 2.0 are satisfied: GNU General Public License, |
| * version 2 with the GNU Classpath Exception, which is available at |
| * https://www.gnu.org/software/classpath/license.html. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 |
| */ |
| |
| package com.acme; |
| |
| import jakarta.ejb.EJB; |
| import jakarta.ejb.ConcurrentAccessException; |
| import jakarta.ejb.ConcurrentAccessTimeoutException; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.sql.Connection; |
| import java.sql.DriverManager; |
| import java.sql.ResultSet; |
| import java.sql.SQLException; |
| import java.sql.Statement; |
| import jakarta.servlet.ServletConfig; |
| import jakarta.servlet.ServletException; |
| import jakarta.servlet.http.HttpServlet; |
| import jakarta.servlet.http.HttpServletRequest; |
| import jakarta.servlet.http.HttpServletResponse; |
| import jakarta.servlet.annotation.WebServlet; |
| import javax.naming.*; |
| |
| @EJB(name="helloStateful", beanInterface=HelloStateful.class) |
| @WebServlet(urlPatterns="/HelloServlet", loadOnStartup=1) |
| public class HelloServlet extends HttpServlet { |
| |
| // Environment entries |
| private String foo = null; |
| |
| @EJB HelloSingleton singleton; |
| @EJB Hello hello; |
| @EJB HelloRemote helloRemote; |
| |
| @Override |
| public void init(ServletConfig config) throws ServletException { |
| super.init(config); |
| |
| System.out.println("In HelloServlet::init"); |
| } |
| |
| @Override |
| protected void doGet(HttpServletRequest req, HttpServletResponse resp) |
| throws ServletException, IOException { |
| System.out.println("In HelloServlet::doGet"); |
| |
| resp.setContentType("text/html"); |
| PrintWriter out = resp.getWriter(); |
| |
| try { |
| HelloStateful sful = (HelloStateful) new InitialContext().lookup("java:comp/env/helloStateful"); |
| sful.hello(); |
| hello.foo(); |
| } catch(Exception e) { |
| e.printStackTrace(); |
| } |
| |
| System.out.println("Remote intf bean says " + |
| helloRemote.hello()); |
| |
| System.out.println("Calling testNoWait. This one should work since it's not a concurrent invocation"); |
| singleton.testNoWait(); |
| |
| System.out.println("Call async wait, then sleep a bit to make sure it takes affect"); |
| singleton.asyncWait(1); |
| try { |
| // Sleep a bit to make sure async call processes before we proceed |
| Thread.sleep(100); |
| } catch(Exception e) { |
| System.out.println(e); |
| } |
| |
| try { |
| System.out.println("Calling testNoWait"); |
| singleton.testNoWait(); |
| throw new RuntimeException("Expected ConcurrentAccessException"); |
| } catch(ConcurrentAccessTimeoutException cate) { |
| throw new RuntimeException("Expected ConcurrentAccessException"); |
| } catch(ConcurrentAccessException cae) { |
| System.out.println("Got expected exception for concurrent access on method with 0 wait"); |
| } |
| |
| singleton.wait(10); |
| |
| singleton.reentrantReadWrite(); |
| |
| singleton.callSing2WithTxAndRollback(); |
| singleton.hello(); |
| |
| singleton.read(); |
| singleton.write(); |
| singleton.reentrantReadRead(); |
| singleton.reentrantWriteWrite(); |
| singleton.reentrantWriteRead(); |
| |
| out.println("<HTML> <HEAD> <TITLE> JMS Servlet Output </TITLE> </HEAD> <BODY BGCOLOR=white>"); |
| out.println("<CENTER> <FONT size=+1 COLOR=blue>DatabaseServelt :: All information I can give </FONT> </CENTER> <p> " ); |
| out.println("<FONT size=+1 color=red> Context Path : </FONT> " + req.getContextPath() + "<br>" ); |
| out.println("<FONT size=+1 color=red> Servlet Path : </FONT> " + req.getServletPath() + "<br>" ); |
| out.println("<FONT size=+1 color=red> Path Info : </FONT> " + req.getPathInfo() + "<br>" ); |
| out.println("</BODY> </HTML> "); |
| |
| } |
| |
| |
| } |
