RE: Dataqueue Help

[Henderson Mads Peter <maheo@xxxxxxxxxx>]

Hi

I use this code to fill a buffer from a dataqueue:




  private DataQueue dq = null;
  private byte[] buffer = null;

                .
                .
                .

    DataQueueEntry dqe = null;

    while (dqe == null) {
      try { dqe = dq.read(-1); }
      catch(InterruptedException e) { throw e; }
      catch(Exception e) { 
        System.out.println("Connection to AS400 died:"+e.getMessage());
        buffer = null;
        return;
      }
    }

    buffer = dqe.getData();




read(-1) makes the queue wait until something popsup. The only problem I
have had with this wait is that you get a 2 sec delay if the queue has been
idle for a while.
/Mads Henderson


-----Original Message-----
From: Gibbons, Michael [mailto:bmis04@MARYWOOD1.MARYWOOD.EDU]
Sent: 6. oktober 2000 20:03
To: 'Java-L'
Subject: Dataqueue Help


Hello,

I am using a while loop to read a dataqueue and am having a problem when I
empty the queue of records. I keep getting an exception when the read() is
executed after all other records have been read. 

Does anyone know where I could get an example of reading data queues in a
loop environment? The examples in the tool box manual show a "wait on the
queue" technique or just a straight read. How do you handle the exception?

Thanks in Advance!


Michael P. Gibbons
Manager of Programming & Technical Services 
MARYWOOD UNIVERSITY
2300 Adams Ave. 
Scranton, PA 18509

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