Java/EJB3/Asynchronous

EJB tutorial from JBoss: Asynchronous call

   <source lang="java">

/*

* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.tutorial.asynch.client; import javax.naming.InitialContext; import org.jboss.aspects.asynch.Future; import org.jboss.ejb3.asynchronous.Asynch; import org.jboss.tutorial.asynch.bean.Echo;

public class Client {

  public static void main(String[] args) throws Exception
  {
     InitialContext ctx = new InitialContext();
     Echo echo = (Echo)ctx.lookup("EchoBean/remote");
     System.out.println("-------- Synchronous call");
     String ret = echo.echo("normal call");
     System.out.println(ret);
     Echo asynchEcho = (Echo) Asynch.getAsynchronousProxy(echo);
     System.out.println("-------- Asynchronous call");
     ret = asynchEcho.echo("asynchronous call");
     System.out.println("Direct return of async invocation is: " + ret);
     System.out.println("-------- Synchronous call");
     ret = echo.echo("normal call 2");
     System.out.println(ret);
     System.out.println("-------- Result of Asynchronous call");
     Future future = Asynch.getFutureResult(asynchEcho);
     System.out.println("Waiting for asynbch invocation to complete");
     while (!future.isDone())
     {
        Thread.sleep(100);
     }
     ret = (String)future.get();
     System.out.println(ret);

  }

}

File: Echo.java /*

* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file 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.tutorial.asynch.bean;

/**

* @author