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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » Get attribute in the second messageflow

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crystalstone
PostPosted: Sun Sep 01, 2002 11:13 pm    Post subject: Get attribute in the second messageflow Reply with quote

Newbie

Joined: 01 Sep 2002
Posts: 3

Hi MQSI Experts,

I'm brand new to MQSI. I have two messageflow as following:

A: Queue1 --> Compute Node A --> Queue2
B: Queue3 --> Compute Node B

An attribute AccountID coming into Queue1, and there are an application read from Queue2 ,modified the attribute, at last send the attribute to Queue3.

In Compute Node B, I want to get both the original attribute value and the changed attribute value. I cannot change the application.

Can any one help me?

Thanks!
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lillo
PostPosted: Mon Sep 02, 2002 1:01 am    Post subject: Reply with quote

Master

Joined: 11 Sep 2001
Posts: 224

There are different options:
- Store the attribute in a database with the MsgId and retreive the attribute in the second message flow.
- Use Aggregate functionality

I hope this help you.

Cheers,
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Lillo
IBM Certified Specialist - WebSphere MQ
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crystalstone
PostPosted: Mon Sep 02, 2002 3:02 am    Post subject: Reply with quote

Newbie

Joined: 01 Sep 2002
Posts: 3

Thank you very much for your help!

But :
a. If I store the msgId with the attribute into database, the msgId must be primary key and must be searchable, and the msgId is BLOB type, it cannot search in DB2. If I convert BLOB to character, there will be abnormal character and DB2 cannot search it too!

b. If use Aggregate functionality, it will be lots of nodes in the message flow, could you give me some advises on how to implement simple message flow ?

Thanks!!
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lillo
PostPosted: Mon Sep 02, 2002 9:53 pm    Post subject: Reply with quote

Master

Joined: 11 Sep 2001
Posts: 224

You could also take a look to the postit plugin node. This node is a support pac.

Cheers,
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Lillo
IBM Certified Specialist - WebSphere MQ
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kwelch
PostPosted: Thu Sep 12, 2002 4:36 am    Post subject: Reply with quote

Master

Joined: 16 May 2001
Posts: 255

crystalstone,

Why do you think MsgId is not searchable? We have a WMQI process in place where we store MsgId and CorrelId and some other information in a database table and then use another messageflow to search the table using those fields. The only difference is our external table is Oracle. I would think DB2 would be comparable. However, I am no databse expert.

Karen
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