/*
* 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 in the distribution for a full listing
* of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* 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,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* RestaurantServiceBA.java
*
* Copyright (c) 2004 Arjuna Technologies Ltd
*
* $Id: RestaurantServiceBA.java,v 1.5 2004/12/01 16:26:44 kconner Exp $
*
*/
package com.jboss.jbosstm.xts.demo.services.restaurant;
import com.arjuna.ats.arjuna.common.Uid;
import com.arjuna.mw.wst11.BusinessActivityManagerFactory;
import com.arjuna.mw.wst11.BusinessActivityManager;
import com.arjuna.wst11.BAParticipantManager;
import com.arjuna.wst.SystemException;
import com.jboss.jbosstm.xts.demo.restaurant.IRestaurantServiceBA;
import javax.jws.*;
import javax.jws.soap.SOAPBinding;
/**
* An adapter class that exposes the RestaurantManager business API as a
* transactional Web Service. Also logs events to a RestaurantView object.
*
* @author Jonathan Halliday (jonathan.halliday@arjuna.com)
* @version $Revision: 1.5 $
*/
@WebService(serviceName="RestaurantServiceBAService", portName="RestaurantServiceBA",
name = "IRestaurantServiceBA", targetNamespace = "http://www.jboss.com/jbosstm/xts/demo/Restaurant",
wsdlLocation = "/WEB-INF/wsdl/RestaurantServiceBA.wsdl")
@HandlerChain(file = "../context-handlers.xml", name = "Context Handlers")
@SOAPBinding(style=SOAPBinding.Style.RPC)
public class RestaurantServiceBA implements IRestaurantServiceBA
{
/**
* Book a number of seats in the restaurant
* Enrols a Participant if necessary and passes
* the call through to the business logic.
*
* @param how_many The number of seats to book.
* @return true on success, false otherwise.
*/
@WebMethod
@WebResult(name = "bookSeatsBAResponse", partName = "bookSeatsBAResponse")
public boolean bookSeats(
@WebParam(name = "how_many", partName = "how_many")
int how_many)
{
RestaurantView restaurantView = RestaurantView.getSingletonInstance();
RestaurantManager restaurantManager = RestaurantManager.getSingletonInstance();
BusinessActivityManager activityManager = BusinessActivityManagerFactory.businessActivityManager();
// get the transaction context of this thread:
String transactionId = null;
try
{
transactionId = activityManager.currentTransaction().toString();
}
catch (SystemException e)
{
System.err.println("bookSeats: unable to obtain a transaction context!");
e.printStackTrace(System.err);
return false;
}
// log the event:
System.out.println("RestaurantServiceBA transaction id =" + transactionId);
restaurantView.addMessage("******************************");
restaurantView.addPrepareMessage("id:" + transactionId + ". Received a booking request for one table of " + how_many + " people");
restaurantView.updateFields();
// invoke the backend business logic:
restaurantManager.bookSeats(transactionId, how_many);
// attempt to finalise the booking
// (it will be compensated later if necessary)
if (restaurantManager.prepareSeats(transactionId))
{
restaurantView.addMessage("id:" + transactionId + ". Seats prepared, trying to commit and enlist compensation Participant");
restaurantView.updateFields();
// it worked, so now we need a participant enlisted in case of compensation:
RestaurantParticipantBA restaurantParticipant = new RestaurantParticipantBA(transactionId, how_many);
// enlist the Participant for this service:
BAParticipantManager participantManager = null;
try
{
participantManager = activityManager.enlistForBusinessAgreementWithParticipantCompletion(restaurantParticipant, "org.jboss.jbossts.xts-demo:restaurantBA:" + new Uid().toString());
}
catch (Exception e)
{
restaurantView.addMessage("id:" + transactionId + ". Participant enrolement failed");
restaurantManager.cancelSeats(transactionId);
System.err.println("bookSeats: Participant enlistment failed");
e.printStackTrace(System.err);
return false;
}
// finish the booking in the backend ensuring it is compensatable:
restaurantManager.commitSeats(transactionId, true);
try
{
// tell the manager we have finished our work:
participantManager.completed();
}
catch (Exception e)
{
System.err.println("bookSeats: 'completed' callback failed");
restaurantManager.cancelSeats(transactionId);
e.printStackTrace(System.err);
return false;
}
}
else
{
restaurantView.addMessage("id:" + transactionId + ". Failed to reserve seats. Cancelling.");
restaurantManager.cancelSeats(transactionId);
restaurantView.updateFields();
return false;
}
restaurantView.addMessage("Request complete\n");
restaurantView.updateFields();
return true;
}
}