The Browse sample

 

The Browse sample is a batch application that demonstrates how to browse messages on a queue using the MQGET call. The application steps through all the messages in a queue, printing the first 80 bytes of each one. You could use this application to look at the messages on a queue without changing them.

Source programs and sample run JCL are supplied in the COBOL, assembler, PL/I, and C languages (see Table 2).

To start the application, edit and run the sample run JCL, as described in Preparing and running sample applications for the batch environment. We can look at messages on one of your own queues by specifying the name of the queue in the run JCL.

When you run the application (and there are some messages on the queue), the output data set looks this:

07/12/1998                        SAMPLE QUEUE REPORT         PAGE    1
                       QUEUE MANAGER NAME : VC4
                               QUEUE NAME : CSQ4SAMP.DEAD.QUEUE
        RELATIVE
         MESSAGE   MESSAGE
         NUMBER    LENGTH ------------------- MESSAGE DATA -------------

              1       740 HELLO. PLEASE CALL ME WHEN YOU GET BACK.
              2       429 CSQ4BQRM
              3       429 CSQ4BQRM
              4       429 CSQ4BQRM
              5        22 THIS IS A TEST MESSAGE
              6         8 CSQ4TEST
              7        36 CSQ4MSG - ANOTHER TEST MESSAGE.....!
              8         9 CSQ4STOP
                                      ********** END OF REPORT **********

If there are no messages on the queue, the data set contains the headings and the End of report message only. If an error occurs with any of the MQI calls, the completion and reason codes are added to the output data set.

• Design of the Browse sample
  

• Language-dependent design considerations
  

 

Parent topic:

Sample programs for WebSphere MQ for z/OS

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