Publishing a Message Specifying Priority and Time-To-Live

Figure 15-12 Use Case Diagram: Publish-Subscribe - Publish Messages Specifying Priority and Time-To-Live

Text description of the illustration adq15jps6.gif

To refer to the table of all basic operations having to do with the Operational Interface see: "Use Case Model: Operational Interface -- Basic Operations"

Purpose

Publish a message specifying priority and time-to-live.

Usage Notes

The priority, and timeToLive of the message can be specified with the publish call. The only delivery mode supported for this release is PERSISTENT.

Syntax

• Java (JDBC): Oracle9i Supplied Java Packages Reference,oracle.jms, AQjmsTopicPublisher.publish

Example

 Example 1 - publish specifying priority, timeToLive

TopicConnectionFactory    tc_fact   = null;
TopicConnection           t_conn    = null;
TopicSession              jms_sess;
TopicPublisher            publisher1;
Topic                     shipped_orders;
int                       myport = 5521;

/* create connection and session */
tc_fact = AQjmsFactory.getTopicConnectionFactory("MYHOSTNAME",
                                                  "MYSID", myport, "oci8");
t_conn = tc_fact.createTopicConnection("jmstopic", "jmstopic");
jms_sess = t_conn.createTopicSession(true, Session.CLIENT_ACKNOWLEDGE);    
  
shipped_orders = ((AQjmsSession )jms_sess).getTopic("OE", "Shipped_Orders_
Topic");
publisher1 = jms_sess.createPublisher(shipped_orders);

/* create text message */
TextMessage     jms_sess.createTextMessage();

/* publish  message with priority 1 and time to live 200 seconds */
publisher1.publish(text_message, DeliveryMode.PERSISTENT, 1, 200000);