MQPub class is used to Publish a message on an MQ Topic.
An MQ Topic is taken from the QName. Set the QName Property with the desired Topic string.
For the default case, the optional topicName needs to be created beforehand, using WebSphere MQ Explorer or this MQSC command: DEFINE TOPIC(STOCKS) TOPICSTR(NYSE) REPLACE; Topic name
%Connect creates a connection to a Topic and opens the queue object. A connection and open MQ object (queue, topic, subscription) is required before messages can be sent or received.
User must first set the standard MQSeries initialization arguments
Topic: Host Topic (Required)
QMgr: Host Queue Manager name. Passing "" connects to the default queue manager. (Optional)
Channel: Host Channel name (Optional)
Transport: Transport type (TCP, LU62, NETBIOS, SPX) (Optional)
Connection: Connection spec, e.g., "127.0.0.1(1401)" (Optional)
See IBM MQ documentation on establishing defaults, and MQ authentication.