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MQSeries.net Forum Index » IBM MQ Java / JMS » Problem in reading a 12000 character length MQ Message

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anandcochin
PostPosted: Tue Jun 27, 2006 9:19 am    Post subject: Problem in reading a 12000 character length MQ Message Reply with quote

Newbie

Joined: 30 Nov 2005
Posts: 5
Location: Boston
I am trying to read a 12000 character length MQ Message from the MQ Queue. The message contains some line feed and carraige characters.
I want to get the 12000 character message even if it contains any line feed or carriage return in that.

Pasting my code :
----------------------
MQGetMessageOptions gmo = new MQGetMessageOptions();
gmo.options = MQC.MQGMO_SYNCPOINT | MQC.MQGMO_CONVERT | MQC.MQGMO_ACCEPT_TRUNCATED_MSG ;

MQMessage msg = new MQMessage();
msg.format = MQC.MQFMT_STRING;
msg.encoding = MQC.MQENC_NATIVE;
msg.messageId = msgId;
msg.correlationId = corrlId;
mqQ.get(msg,gmo,12000);

But its not returning me a string of 12000 charcater.

Can anyone help me to correct the problem ?. Why i am not able to read the entire message ?. Is there any other settings to be done ?.

Thanks
Anand
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Aanand Koottiligal
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wschutz
PostPosted: Tue Jun 27, 2006 9:25 am    Post subject: Reply with quote

Jedi Knight

Joined: 02 Jun 2005
Posts: 3316
Location: IBM (retired)
What are you getting back?
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8davitt
PostPosted: Wed Jun 28, 2006 4:01 am    Post subject: Reply with quote

Apprentice

Joined: 06 Feb 2003
Posts: 37
Location: Seated in front of monitor
Please review the MQ Java API.

MQQueue.get( MQMessage message,
MQGetMessageOptions gmo,
int MaxMsgSize)

This returns data up to a maximum of MaxMsgSize. It is not interested in the contents of the data. If there are not 12000 characters available you will only ge what is there. If there are more than 12000 characters you will get an exception.

Then look at using MQMessage.getDataLength() and MQMessage.readFully() variants to extract the actual data itself including LF CR etc.

Refer to Using Java Chapter 9

One final thing is that you could be hitting a known problem IY72849 so make sure you have the latest service for MQ applied.

/s
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