Advanced Queuing - Oracle

Creating a Queue Receiver for Queues of Oracle Object Type (ADT) Messages
Usage Notes
The CustomDatum factory for a particular java class that maps to the SQL ADT
payload can be obtained using the getFactory static method.
For queues containing AdtMessages the selector for QueueReceiver can be a SQL
expression on the message payload contents or messageID or priority or
correlationID.
Selector on message id - to retrieve messages that have a specific messageID
msgid = ’23434556566767676’
Note: in this case message IDs must NOT be prefixed with ’ID:’
Selector on priority or correlation is specified as follows
priority < 3 AND corrid = ’Fiction’
Selector on message payload is specified as follows
tab.user_data.color = ’GREEN’ AND tab.user_data.price < 30000
Syntax
Java (JDBC): Oracle9i Supplied Java Packages Reference oracle.jms,
AQjmsSession.createReceiver
Example
Assume the Queue - test_queue has payload of type SCOTT.EMPLOYEE and the
java class that is generated by Jpublisher for this ADT is called Employee. The
Employee class implements the CustomDatum interface. The CustomDatumFactory
for this class can be obtained by using the Employee.getFactory() method.
/* Create a receiver for a Queue with Adt messages of type EMPLOYEE*/
QueueSession jms_session
QueueReceiver receiver;
Queue test_queue;
browser = ((AQjmsSession)jms_session).createReceiver(test_queue,
"JMSCorrelationID = ’MANAGER’, Employee.getFactory());
14-28 Oracle9i Application Developer’s Guide - Advanced Queuing