public MapMessage convert(BusinessObject bo) throws Exception {
MapMessage mm = context.createMapMessage();
for (String key : bo.keySet()) {
mm.setObject(key, bo.get(key));
}
return mm;
}
public static void main(String[] args) {
MapMessage outMessage;
JMSConsumer orderConfirmReceiver;
MapMessage inMessage;
if (args.length != 1) {
System.out.println("Error: Program takes numerical argument.");
System.exit(1);
}
quantity = (new Integer(args[0])).intValue();
System.out.println("Retailer: Quantity to be ordered is " + quantity);
/*
* Create non-transacted context and sender for
* vendor order queue.
* Create message to vendor, setting item and
* quantity values.
* Send message.
* Create receiver for retailer confirmation queue.
* Get message and report result.
* Send an end-of-message-stream message so vendor
* will stop processing orders.
*/
try (JMSContext context = connectionFactory.createContext(); ) {
outMessage = context.createMapMessage();
outMessage.setString("Item", "Computer(s)");
outMessage.setInt("Quantity", quantity);
outMessage.setJMSReplyTo(retailerConfirmQueue);
context.createProducer().send(vendorOrderQueue, outMessage);
System.out.println("Retailer: Ordered " + quantity + " computer(s)");
orderConfirmReceiver = context.createConsumer(retailerConfirmQueue);
inMessage = (MapMessage) orderConfirmReceiver.receive();
if (inMessage.getBoolean("OrderAccepted") == true) {
System.out.println("Retailer: Order filled");
} else {
System.out.println("Retailer: Order not filled");
}
System.out.println("Retailer: Placing another order");
outMessage.setInt("Quantity", quantity * 2);
context.createProducer().send(vendorOrderQueue, outMessage);
System.out.println("Retailer: Ordered " + outMessage.getInt("Quantity") + " computer(s)");
inMessage = (MapMessage) orderConfirmReceiver.receive();
if (inMessage.getBoolean("OrderAccepted") == true) {
System.out.println("Retailer: Order filled");
} else {
System.out.println("Retailer: Order not filled");
}
/*
* Send a non-text control message indicating end
* of messages.
*/
context.createProducer().send(vendorOrderQueue, context.createMessage());
} catch (JMSException e) {
System.err.println("Retailer: Exception occurred: " + e.toString());
}
}