Create a Durable Subscriber for an ADT Topic Without Selector

Figure 15-17 Use Case Diagram: Publish-Subscribe - Create a Durable Subscriber for an ADT Topic Without Selector

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

Create a durable subscriber for an adt topic without selector.

Usage Notes

To create a durable subscriber for a Topic of Oracle Object type, the client needs to specify the CustomDatumFactory for the Oracle Object Type in addition to the Topic and subscriber name.

Syntax

• Java (JDBC): Oracle8i Supplied Java Packages Reference,oracle.jms, AQjmsSession.createDurableSubscriber

Example

 subscribe to an ADT queue

TopicConnectionFactory    tc_fact   = null;
TopicConnection           t_conn    = null;
TopicSession              t_sess    = null;  
TopicSession              jms_sess;
TopicSubscriber           subscriber1;
Topic                     shipped_orders;
int                       my[port = 5521;
AQjmsAgent[]              recipList;    
/* the java mapping of the oracle object type created by J Publisher */
ADTMessage                message; 
  
/* 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");

/* create a subscriber, specifying the correct CustomDatumFactory */
subscriber1 = jms_sess.createDurableSubscriber(shipped_orders, 
'WesternShipping',
                                               AQjmsAgent.getFactory());