Solved

Detect deletion of a messagequeue?

Posted on 2004-08-31
2
290 Views
Last Modified: 2011-04-14
Hi everyone!

I have a problem...how can I detect a deleted queue? I tried using the
IMSMQQueueInfo::Refresh() just before sending a message to an queue. If you
do the refresh before sending you´ll get a MQ_ERROR_QUEUE_NOT_FOUND and
you´ll understand that the queue is deleted...the only problem with that is
that the Refresh decreases performance, a lot!

How can I detect a deleted queue, any ideas anyone?


This is my code ( ignore the neverending loop if the queue isn´t found, the
sample is just done to show my thinking ) :

CMessageQueue::PostMessage(IMSMQQueue3Ptr q, CMessage MsgToSend)
{
    // Here I don´t know if the q is deleted or not so I try sending a
message to it
    // and if I get a MQ_ERROR_QUEUE_NOT_FOUND I try to locate it and
    // then try resending the message
    try
    {
         IMSMQQueueInfo3Ptr qi = q->GetQueueInfo();
         // Try to refresh the queueinfo
         qi->Refresh();
         q->Send(MsgToSend);
    }
    catch( _com_error comerr )
    {
        HRESULT hr = comerr.Error();
        if( hr = MQ_ERROR_QUEUE_NOT_FOUND )
        {
            // Try locate the queue and then try this postmessage-function
again
        }
    }
}
0
Comment
Question by:TYB
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 86

Accepted Solution

by:
jkr earned 250 total points
ID: 11942466
Actually

         IMSMQQueueInfo3Ptr qi = q->GetQueueInfo();

         if ( !qi) {

             // no IMSMQQueueInfo3Ptr means that queue does not exist
         }

IMHO should do it, no need to refresh...
0
 

Author Comment

by:TYB
ID: 12074093
Tnx for your answer jkr...it helped me out..
0

Featured Post

[Webinar] Learn How Hackers Steal Your Credentials

Do You Know How Hackers Steal Your Credentials? Join us and Skyport Systems to learn how hackers steal your credentials and why Active Directory must be secure to stop them. Thursday, July 13, 2017 10:00 A.M. PDT

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article will show you some of the more useful Standard Template Library (STL) algorithms through the use of working examples.  You will learn about how these algorithms fit into the STL architecture, how they work with STL containers, and why t…
This article shows you how to optimize memory allocations in C++ using placement new. Applicable especially to usecases dealing with creation of large number of objects. A brief on problem: Lets take example problem for simplicity: - I have a G…
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…
The goal of the video will be to teach the user the difference and consequence of passing data by value vs passing data by reference in C++. An example of passing data by value as well as an example of passing data by reference will be be given. Bot…

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question