| Author |
Message
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| meriton |
 Posted: Wed Aug 21, 2002 5:13 pm Post subject: Browsing a queue with MQMO_MATCH_CORREL_ID option. |
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Novice
Joined: 07 Aug 2002
Posts: 24
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Here is what I am doing get an mq error 2046
public static int doBrowseReply(byte[] corrId)
throws MQException, Exception {
int counter = 0;
if (mQMgr != null) {
try {
int vOpenOptions = MQC.MQOO_BROWSE | MQC.MQOO_FAIL_IF_QUIESCING;
String vReplyQName = mReplyQName;
MQQueue vReplyQ =
mQMgr.accessQueue(vReplyQName, vOpenOptions, null, null, null);
//testing...
if (vReplyQ == null)
mLog.warning("doBrowseReplyQueue - Couldn't access Reply Queue");
//end testing...
for (int i = 0;; i++) {
MQMessage vMsg = new MQMessage();
MQGetMessageOptions vMsgOptions = new MQGetMessageOptions();
vMsgOptions.options = MQC.MQGMO_WAIT;
vMsgOptions.options = MQC.MQMO_MATCH_CORREL_ID;
vMsgOptions.waitInterval = 2000; //milliseconds
if (i == 0)
vMsgOptions.options = vMsgOptions.options | MQC.MQGMO_BROWSE_FIRST;
else
vMsgOptions.options = vMsgOptions.options | MQC.MQGMO_BROWSE_NEXT;
vMsg.correlationId = corrId;
vReplyQ.get(vMsg, vMsgOptions);
vMsg.setDataOffset(0);
String vMsgText = vMsg.readString(vMsg.getMessageLength());
mLog.debug("Message " + (i + 1) + " = " + vMsgText);
counter++;
vMsg.correlationId = null;
} //end for
} catch (MQException MQe) {
if (MQe.reasonCode != 2033)
throw MQe;
} catch (Exception e) {
throw e;
}
} //end if
return counter;
} //end method doBrowseQueue/** *
Thanks |
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| RogerLacroix |
| Posted: Wed Aug 21, 2002 8:31 pm Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3265
Location: London, ON Canada
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Hi,
After only a quick review, I see 2 problems:
First Problem:
| Code: |
vMsgOptions.options = MQC.MQGMO_WAIT;
vMsgOptions.options = MQC.MQMO_MATCH_CORREL_ID; |
The 2nd line of code overrides the 1st line.
| Code: |
| vMsgOptions.options = MQC.MQGMO_WAIT + MQC.MQMO_MATCH_CORREL_ID + MQC.MQGMO_FAIL_IF_QUIESCING; |
Note: Having the "Fail if Quiescing" is a good thing.
Second Problem:
| Code: |
if (i == 0)
vMsgOptions.options = vMsgOptions.options | MQC.MQGMO_BROWSE_FIRST;
else
vMsgOptions.options = vMsgOptions.options | MQC.MQGMO_BROWSE_NEXT; |
The 1st time through the loop the program is fine but on the 2nd loop you will have set BOTH "Browse First" and "Browse Next" in the options variable (because you are summing the fields).
Change it to the following:
| Code: |
if (i == 0)
vMsgOptions.options = MQC.MQGMO_WAIT + MQC.MQMO_MATCH_CORREL_ID + MQC.MQGMO_FAIL_IF_QUIESCING + MQC.MQGMO_BROWSE_FIRST;
else
vMsgOptions.options = MQC.MQGMO_WAIT + MQC.MQMO_MATCH_CORREL_ID + MQC.MQGMO_FAIL_IF_QUIESCING + MQC.MQGMO_BROWSE_NEXT; |
later
Roger...
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| meriton |
| Posted: Wed Aug 21, 2002 8:59 pm Post subject: |
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Novice
Joined: 07 Aug 2002
Posts: 24
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thanks Roger,
I changed the code but get the same error.
com.ibm.mq.MQException: Completion Code
2, Reason 2046
TIA |
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| RogerLacroix |
| Posted: Thu Aug 22, 2002 8:00 am Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3265
Location: London, ON Canada
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Well, it works for me.
Post your code again - the entire thing and I'll have a look.
Note: Use the BBCode of [code] ... [/code] around your code so that it is easier to read.
later
Roger...
_________________
Capitalware: Transforming tomorrow into today.
Connected to MQ!
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| meriton |
| Posted: Thu Aug 22, 2002 3:15 pm Post subject: |
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Novice
Joined: 07 Aug 2002
Posts: 24
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Thanks Roger ,
Here is the code,that thorws a 2046 exception at mq get.
| Code: |
public static int doBrowseReply(byte[] corrId,int pNumMsgsInBatch)
throws MQException, Exception {
int counter = 0;
if (mQMgr != null) {
try {
int vOpenOptions = MQC.MQOO_BROWSE | MQC.MQOO_FAIL_IF_QUIESCING;
String vReplyQName = mReplyQName;
MQQueue vReplyQ =
mQMgr.accessQueue(vReplyQName, vOpenOptions, null, null, null);
//testing...
if (vReplyQ == null)
mLog.warning("doBrowseReplyQueue - Couldn't access Reply Queue");
//end testing...
for (int i = 0;; i++) {
MQMessage vMsg = new MQMessage();
vMsg.correlationId = corrId;
MQGetMessageOptions vMsgOptions = new MQGetMessageOptions();
//vMsgOptions.options = MQC.MQGMO_WAIT;
vMsgOptions.waitInterval = 2000; //milliseconds
if (i == 0)
vMsgOptions.options = MQC.MQGMO_WAIT + MQC.MQMO_MATCH_CORREL_ID + MQC.MQGMO_FAIL_IF_QUIESCING + MQC.MQGMO_BROWSE_FIRST;
else
vMsgOptions.options = MQC.MQGMO_WAIT + MQC.MQMO_MATCH_CORREL_ID + MQC.MQGMO_FAIL_IF_QUIESCING + MQC.MQGMO_BROWSE_NEXT;
vReplyQ.get(vMsg, vMsgOptions);
vMsg.setDataOffset(0);
String vMsgText = vMsg.readString(vMsg.getMessageLength());
mLog.debug("Message " + (i + 1) + " = " + vMsgText);
//check if batch id is the one we want...
String vBatchId = getBatchId(vMsgText, false);
if (vBatchId != null) {
//if (vBatchId.equalsIgnoreCase(pBatchId))
counter++;
if( pNumMsgsInBatch == counter ) break;
}
} //end for
} catch (MQException MQe) {
if (MQe.reasonCode != 2033)
throw MQe;
} catch (Exception e) {
throw e;
}
} //end if
return counter;
} //end method doBrowseQueue/** *
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| RogerLacroix |
| Posted: Thu Aug 22, 2002 8:34 pm Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3265
Location: London, ON Canada
|
He, he, he, he ... 
I saw your mistake then I made a mistake. There is a difference between the GMO variables options and matchOptions .
Here is the corrected code. I updated 4 lines (see // RML ):
| Code: |
public static int doBrowseReply(byte[] corrId,int pNumMsgsInBatch)
throws MQException, Exception {
int counter = 0;
if (mQMgr != null) {
try {
int vOpenOptions = MQC.MQOO_INQUIRE + MQC.MQOO_BROWSE + MQC.MQOO_FAIL_IF_QUIESCING; // RML
String vReplyQName = mReplyQName;
MQQueue vReplyQ =
mQMgr.accessQueue(vReplyQName, vOpenOptions, null, null, null);
//testing...
if (vReplyQ == null)
mLog.warning("doBrowseReplyQueue - Couldn't access Reply Queue");
//end testing...
for (int i = 0;; i++) {
MQMessage vMsg = new MQMessage();
vMsg.correlationId = corrId;
MQGetMessageOptions vMsgOptions = new MQGetMessageOptions();
vMsgOptions.matchOptions = MQC.MQMO_MATCH_MSG_ID; // RML
vMsgOptions.waitInterval = 2000; //milliseconds
if (i == 0)
vMsgOptions.options = MQC.MQGMO_WAIT + MQC.MQGMO_FAIL_IF_QUIESCING + MQC.MQGMO_BROWSE_FIRST; // RML
else
vMsgOptions.options = MQC.MQGMO_WAIT + MQC.MQGMO_FAIL_IF_QUIESCING + MQC.MQGMO_BROWSE_NEXT; // RML
vReplyQ.get(vMsg, vMsgOptions);
vMsg.setDataOffset(0);
String vMsgText = vMsg.readString(vMsg.getMessageLength());
mLog.debug("Message " + (i + 1) + " = " + vMsgText);
//check if batch id is the one we want...
String vBatchId = getBatchId(vMsgText, false);
if (vBatchId != null) {
//if (vBatchId.equalsIgnoreCase(pBatchId))
counter++;
if( pNumMsgsInBatch == counter ) break;
}
} //end for
} catch (MQException MQe) {
if (MQe.reasonCode != 2033)
throw MQe;
} catch (Exception e) {
throw e;
}
} //end if
return counter;
} //end method doBrowseQueue/** * |
later
Roger...
_________________
Capitalware: Transforming tomorrow into today.
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| meriton |
| Posted: Thu Aug 22, 2002 10:22 pm Post subject: |
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Novice
Joined: 07 Aug 2002
Posts: 24
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hi roger,
Its works now,could you tell me how do I count the actual messages that matched the correlationId without actually doing some processing to the message text(see my code getBatchId()).
Thanks |
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| RogerLacroix |
| Posted: Fri Aug 23, 2002 7:27 pm Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3265
Location: London, ON Canada
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| meriton |
| Posted: Sun Aug 25, 2002 1:58 pm Post subject: |
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Novice
Joined: 07 Aug 2002
Posts: 24
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