/*
* JBoss, Home of Professional Open Source
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.test.jpa.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.annotation.Resource;
import javax.naming.InitialContext;
import javax.persistence.EntityManager;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.transaction.UserTransaction;
import org.jboss.logging.Logger;
import org.jboss.test.jpa.support.TestEntity;
/**
* TestServlet.
*
* @author <a href="adrian@jboss.com">Adrian Brock</a>
* @version $Revision: 82920 $
*/
public class TestServlet extends HttpServlet
{
/** The serialVersionUID */
private static final long serialVersionUID = -5539196377086639503L;
private Logger log = Logger.getLogger(TestServlet.class);
@Resource
private UserTransaction ut;
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException
{
try
{
ut.begin();
try
{
InitialContext ctx = new InitialContext();
EntityManager em = (EntityManager) ctx.lookup("java:comp/env/persistence/em");
String mode = req.getParameter("mode");
if ("Write".equals(mode))
{
TestEntity test = new TestEntity("Hello", "World");
em.persist(test);
}
else
{
TestEntity test = em.find(TestEntity.class, "Hello");
resp.setContentType("text/plain");
PrintWriter out = resp.getWriter();
out.print(test.getDescription());
out.close();
}
}
catch (Exception e)
{
log.error("Error in servlet", e);
ut.setRollbackOnly();
throw e;
}
finally
{
ut.commit();
}
}
catch (Exception e)
{
throw new ServletException("Error", e);
}
}
}