/*
* 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 General Public License, v. 2.0.
* 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 General Public License for more details.
* You should have received a copy of the GNU General Public License,
* v. 2.0 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.
*/
/*
* TaxiServiceBA.java
*
* Copyright (c) 2004 Arjuna Technologies Ltd.
*
* $Id: TaxiServiceBA.java,v 1.5 2004/12/01 16:27:01 kconner Exp $
*
*/
package com.arjuna.xts.nightout.services.Taxi;
import com.arjuna.wst.*;
import com.arjuna.ats.arjuna.common.Uid;
import com.arjuna.mw.wst.BusinessActivityManager;
import com.arjuna.mw.wst.BusinessActivityManagerFactory;
/**
* An adapter class that exposes the TaxiManager business API as a
* transactional Web Service. Also logs events to a TaxiView object.
*
* @author Jonathan Halliday (jonathan.halliday@arjuna.com)
* @version $Revision: 1.5 $
*/
public class TaxiServiceBA implements ITaxiServiceBA
{
/**
* Book a taxi
* Enrols a Participant if necessary and passes
* the call through to the business logic.
*
* @return true on success, false otherwise.
*/
public boolean bookTaxi()
{
TaxiView taxiView = TaxiView.getSingletonInstance();
TaxiManager taxiManager = TaxiManager.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("bookTaxi: unable to obtain a transaction context!");
e.printStackTrace(System.err);
return false;
}
// log the event:
System.out.println("TaxiServiceBA transaction id =" + transactionId);
taxiView.addMessage("******************************");
taxiView.addPrepareMessage("id:" + transactionId.toString() + ". Received a taxi booking request");
taxiView.updateFields();
// invoke the backend business logic:
taxiManager.bookTaxi(transactionId);
// attempt to finalise the booking
if (taxiManager.prepareTaxi(transactionId))
{
taxiView.addMessage("id:" + transactionId + ". Seats prepared, trying to commit and enlist compensation Participant");
taxiView.updateFields();
// it worked, so now we need a participant enlisted in case of compensation:
TaxiParticipantBA taxiParticipant = new TaxiParticipantBA(transactionId);
// enlist the Participant for this service:
BAParticipantManager participantManager = null;
try
{
participantManager = activityManager.enlistForBusinessAgreementWithParticipantCompletion(taxiParticipant, new Uid().toString());
}
catch (Exception e)
{
taxiView.addMessage("id:" + transactionId + ". Participant enrolement failed");
System.err.println("bookTaxi: Participant enrolment failed");
e.printStackTrace(System.err);
return false;
}
// finish the booking in the backend:
taxiManager.commitTaxi(transactionId);
try
{
// tell the manager we have finished our work:
participantManager.completed();
}
catch (Exception e)
{
System.err.println("bookTaxi: 'completed' callback failed");
e.printStackTrace(System.err);
return false;
}
}
else
{
taxiView.addMessage("id:" + transactionId + ". Failed to reserve taxi. Cancelling.");
taxiManager.cancelTaxi(transactionId);
taxiView.updateFields();
return false;
}
taxiView.addMessage("Request complete\n");
taxiView.updateFields();
return true;
}
}