Advanced Queuing - Oracle

Adding a Subscriber
Examples
See Chapter 3, "AQ Programmatic Environments" for a list of available functions in
each programmatic environment. Examples are provided in the following
programmatic environments:
PL/SQL (DBMS_AQADM): Adding Subscriber on page 9-60
VB (OO4O): Example not provided.
Java (JDBC): Adding a Subscriber on page 9-60
PL/SQL (DBMS_AQADM): Adding Subscriber
/* Anonymous PL/SQL block for adding a subscriber at a designated queue in a
designated schema at a database link: */
DECLARE
subscriber sys.aq$_agent;
BEGIN
subscriber := sys.aq$_agent (’subscriber1’, ’aq2.msg_queue2@london’, null);
DBMS_AQADM.ADD_SUBSCRIBER(
queue_name => ’aq.multi_queue’,
subscriber => subscriber);
END;
/* Add a subscriber with a rule: */
DECLARE
subscriber sys.aq$_agent;
BEGIN
subscriber := sys.aq$_agent(’subscriber2’, ’aq2.msg_queue2@london’, null);
DBMS_AQADM.ADD_SUBSCRIBER(
queue_name => ’aq.multi_queue’,
subscriber => subscriber,
rule => ’priority < 2’);
END;
Add a Subscriber and Specify a Transformation
/* Add a subscriber with a rule and specify a transformation */
DECLARE
subscriber sys.aq$_agent;
BEGIN
subscriber := sys.aq$_agent(’subscriber2’, ’aq2.msg_queue2@london’, null);
DBMS_AQADM.ADD_SUBSCRIBER(
queue_name => ’aq.multi_queue’,
subscriber => subscriber,
transformation => ’AQ.msg_map’);
9-60 Oracle9i Application Developer’s Guide - Advanced Queuing