Advanced Queuing - Oracle

Dequeue Features
/* Create an AQ Session: */
aq_sess = AQDriverManager.createAQSession(db_conn);
deq_option = new AQDequeueOption();
deq_option.setConsumerName("Overseas_Shipping");
deq_option.setWaitTime(AQDequeueOption.WAIT_NONE);
deq_option.setNavigationMode(AQDequeueOption.NAVIGATION_FIRST_MESSAGE);
deq_option.setDequeueMode(AQDequeueOption.DEQUEUE_LOCKED);
bookedorders_q = aq_sess.getQueue("OS", "OS_bookedorders_que");
while(new_orders)
{
try
{
/* Dequeue the message - browse with lock */
message = bookedorders_q.dequeue(deq_option, Order.getFactory());
obj_payload = message.getObjectPayload();
deq_msgid = message.getMessageId();
deq_order = (Order)(obj_payload.getPayloadData());
deq_cust = deq_order.getCustomer();
cust_country = deq_cust.getCountry();
8-74 Oracle9i Application Developer’s Guide - Advanced Queuing
if(cust_country.equals("Canada") ||
cust_country.equals("Mexico"))
{
deq_option.setDequeueMode(
AQDequeueOption.DEQUEUE_REMOVE_NODATA);
deq_option.setMessageId(deq_msgid);
/* Delete the message */
bookedorders_q.dequeue(deq_option, Order.getFactory());
System.out.println("---- next booked order ------");
System.out.println("Order no: " + deq_order.getOrderno());
System.out.println("Ship state: " + deq_cust.getState());
System.out.println("Ship country: " + deq_cust.getCountry());
System.out.println("Order type: " + deq_order.getOrdertype());