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MQSeries.net Forum Index » WebSphere Message Broker (ACE) Support » PubSub issue

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leongor
PostPosted: Wed Mar 10, 2004 1:38 am    Post subject: PubSub issue Reply with quote

Master

Joined: 13 May 2002
Posts: 264
Location: Israel
I wonder when using publish/subscribe if to publish message can be attached some info from subscribe message.
For example :
An application subscribes to some topic while inside sub message there is an info field.
When publish message arrives it's immediately forwarded to subscriber as is. Is it possible to attach info field to the publish message ?
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Leonid.

IBM Certified MQSeries Specialist.
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jefflowrey
PostPosted: Wed Mar 10, 2004 4:37 am    Post subject: Reply with quote

Grand Poobah

Joined: 16 Oct 2002
Posts: 19981
No, I don't think this can be done.
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I am *not* the model of the modern major general.
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leongor
PostPosted: Wed Mar 10, 2004 6:21 am    Post subject: Reply with quote

Master

Joined: 13 May 2002
Posts: 264
Location: Israel
Thanks for reply.
I found some parameter you can set with subscribe : SubUserData.
From Help :
Quote:

<SubUserData> (MQPSC_SUBSCRIPTION_USER_DATA)
This is a variable length text string. The value is stored by the broker with the subscription, but has no influence on publication delivery to the subscriber. The value can be altered by re-registering to the same subscription with a new value. This attribute is there for the use of the application.
The SubUserData is returned in the Metatopic information (MQCACF_REG_SUB_USER_DATA) for a subscription if present.

What is Metatopic information ? Where is it returned ?
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Leonid.

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