That code formatting didn't work. Should have looked like:
Destination destination = session.createQueue(queueName);
String selector = propertyName + "='" + propertyValue + "'";
var consumer = session.createConsumer(destination, selector);
Message message = null;
while ((message = consumer.receive(PURGE_TIMEOUT_MS)) != null) {
result.add(message);
}
[rg] <https://www.redpointglobal.com/>
John Lilley
Data Management Chief Architect, Redpoint Global Inc.
34 Washington Street, Suite 205 Wellesley Hills, MA 02481
M: +1 7209385761<tel:+1%207209385761> |
[email protected]<mailto:[email protected]>
-----Original Message-----
From: John Lilley
<[email protected]<mailto:[email protected]>>
Sent: Saturday, September 21, 2024 1:03 PM
To: [email protected]<mailto:[email protected]>
Subject: Clarification of JMS MessageConsumer.receive(timeout)
*** [Caution] This email is from an external source. Please use caution
responding, opening attachments or clicking embedded links. ***
I am trying to build a utility for purging a queue of all messages matching a
filter. The purpose is to remove “job start” messages that have been aborted
before they were consumed and started.
To this end I have code like:
Destination destination = session.createQueue(queueName); String selector =
propertyName + "='" + propertyValue + "'"; var consumer =
session.createConsumer(destination, selector); Message message = null; while
((message = consumer.receive(PURGE_TIMEOUT_MS)) != null) {
result.add(message);
}
I am unsure about PURGE_TIMEOUT_MS. I only care about messages that are already
in the queue. Does this mean that receiveImmediately() would always get a
message if one is in the queue? Or can there be a small delay while (I am
guessing) some internal consumer waits for a message to be delivered
asynchronously and then signals a semaphore? If so, how long should I wait to
be sure?
Thanks
john
[rg]
<https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwww.redpointglobal.com%2f&c=E,1,lsfwkEql83IPOLeWqWILFw4uHQCLzyhNeOHSBKhejgp733nKBeV7D7Kg0t7xr5jZoVEpp1zcMRYnFw3GT25IOJe79-bkOIYJOPKagSnH0NT4THotQQ,,&typo=1>
John Lilley
Data Management Chief Architect, Redpoint Global Inc.
34 Washington Street, Suite 205 Wellesley Hills, MA 02481
M: +1 7209385761<tel:+1%207209385761> |
[email protected]<mailto:[email protected]><mailto:[email protected]<mailto:[email protected]>>
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