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Message
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| AlexeiSkate |
 Posted: Mon May 27, 2002 2:14 pm Post subject: Methods to read Queue backout threshold and requeue name ? |
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Centurion
Joined: 10 Apr 2002
Posts: 123
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Hi,
I can't seem to find any method for the MQQueue class in the MQSeries for Java redbook that return to me the Backout threshold count and Backout Requeue Name defined for a queue.
Right now I have those two values hard-coded in my Java program but I would rather be able to have the Queue object returned them to me if possible. Do those getter methods exist in Java API ?
Thanks,
Alex |
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| kolban |
| Posted: Mon May 27, 2002 6:43 pm Post subject: |
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Grand Master
Joined: 22 May 2001
Posts: 1072
Location: Fort Worth, TX, USA
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The MQQueue object is derived from the MQManagedObject class. This class has an inquire() method which can be used to query the attributes of objects such as a queue.
Reviewing the MQSeries application programming reference on the MQINQ API call... I find MQCA_BACKOUT_REQ_Q_NAME and MQCA_BACKOUT_THRESHOLD as the attributes on the queue for which you wish the values inside your Java based application. |
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| bower5932 |
| Posted: Tue May 28, 2002 7:38 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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Here's a code fragment:
import com.ibm.mq.*; // Include the MQ package
import com.ibm.mq.pcf.*; // Include the MQ PCF package
......
private String myQmgr = "";
private String myQname;
private MQQueueManager qMgr;
private int[] selectors = {
CMQC.MQIA_BACKOUT_THRESHOLD,
CMQC.MQCA_BACKOUT_REQ_Q_NAME };
private int[] intAttrs = new int[1];
private byte[] charAttrs = new byte[MQC.MQ_Q_NAME_LENGTH];
private int boThresh;
.....
int openOptions = MQC.MQOO_INPUT_AS_Q_DEF | MQC.MQOO_INQUIRE
| MQC.MQOO_SAVE_ALL_CONTEXT;
MQQueue myQueue = qMgr.accessQueue(myQname, openOptions, null, null, null);
/***********************************************/
/* Get the values for the queue and threshold. */
/***********************************************/
MQManagedObject moMyQueue = (MQManagedObject)myQueue;
moMyQueue.inquire(selectors, intAttrs, charAttrs);
boThresh = intAttrs[0];
String myPutQname = new String(charAttrs);
System.out.println("Backout Threshold: " + boThresh);
System.out.println("Backout Queue: " + myPutQname);
Hope this helps.
Ron |
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| techno |
| Posted: Mon Jan 26, 2004 4:40 pm Post subject: |
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Chevalier
Joined: 22 Jan 2003
Posts: 429
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| Do we have corresponding API in JMS. Pls help. Thanks. |
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| bower5932 |
| Posted: Tue Jan 27, 2004 6:47 am Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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| You can try looking a the Message.getJMSRedelivered() to see if a message has been redelivered. You can also look at the JMSXDeliveryCount to see how many times it has been redelivered. However, I know of nothing from JMS that will allow you to look at the underlying queue to get its backout threshold and queue name. |
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| techno |
| Posted: Tue Jan 27, 2004 11:49 am Post subject: |
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Chevalier
Joined: 22 Jan 2003
Posts: 429
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I tried doing Base classes. MQIA_BACKOUT_THRESHOLD does not seem to be under MQC.
MQC.MQIA_BACKOUT_THRESHOLD is not resolved. Where does this constant exist? Pls help. |
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| bower5932 |
| Posted: Tue Jan 27, 2004 2:51 pm Post subject: |
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Jedi Knight
Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA
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It worked for me. Make sure you have the import:
import com.ibm.mq.pcf.*;
and I used CMQC.MQIA_BACKOUT_THRESHOLD. |
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| techno |
| Posted: Tue Jan 27, 2004 3:56 pm Post subject: |
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Chevalier
Joined: 22 Jan 2003
Posts: 429
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com.ibm.mq.pcf.*
Where do I find them? I do not see in a 5.3 java jars.
Thanks |
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| fschofer |
| Posted: Wed Jan 28, 2004 1:39 am Post subject: |
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Knight
Joined: 02 Jul 2001
Posts: 524
Location: Mainz, Germany
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| techno |
| Posted: Wed Jan 28, 2004 8:49 am Post subject: |
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Chevalier
Joined: 22 Jan 2003
Posts: 429
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