EJB tutorial from JBoss: Asynchronous call : Asynchronous « EJB3 « Java

1. Java
2. EJB3
3. Asynchronous

EJB tutorial from JBoss: Asynchronous call

/*
 * 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 <a href="mailto:kabir.khan@jboss.org">Kabir Khan</a>
 * @version $Revision: 57207 $
 */
public interface Echo
{
   String echo(String s);
   public int echo(int i);
}


File: EchoBean.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;

import javax.ejb.Stateless;
import javax.ejb.Remote;

/**
 * @author <a href="mailto:kabir.khan@jboss.org">Kabir Khan</a>
 * @version $Revision: 57207 $
 */
@Stateless
@Remote(Echo.class)
public class EchoBean implements Echo
{
   public int echo(int i)
   {
      return i;
   }

   public String echo(String s)
   {
      return s;
   }

}


           
       

jboss-EJB-3.0_RC9_Patch_1.zip( 10,289 k)

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