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Use a value in a statement |
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x061294 |
Posted: Wed Jan 03, 2007 11:41 am Post subject: Use a value in a statement |
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 Acolyte
Joined: 05 Apr 2005 Posts: 62
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Running WMB version 6.0.0.3 on Linux
I have a process which determines, based on values in the message, which path to route the message to. I'd like to extend/change that functionality to read in the criteria and the values in from a DB, however have been told that I can't do that. It seems I should, but don't know that for a fact. So I thought I would ask others.
Right now I might do something like:
If InputRoot.MQRFH2.usr.PldFmt = "String" Then....
and the broker would walk the path to the field and compare it against the value of "String"
What I would like to do is store “InputRoot.MQRFH2.usr.PldFmt" and "String" in the DB in a name/value pair
and then do a select against the DB to get the information and apply it in the "If" statement
If (value of DB.name) = (value of DB.value) Then ....
which would resolve to the same statement as above
If InputRoot.MQRFH2.usr.PldFmt = "String" Then....
which the broker would then use the value of DB.name to search the input message to compare that against the value of DB.value
I was told that you can't use the value of the DB.name field to be a field name but only as an actual value. Does anyone know if I can use the value of a field as a field location rather than the actual value, and, if so, how?
Thanks. |
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jefflowrey |
Posted: Wed Jan 03, 2007 11:47 am Post subject: |
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Grand Poobah
Joined: 16 Oct 2002 Posts: 19981
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You can use {a} to evaluate the variable a as one part of a field identifier.
So you could use InputRoot.{a}.Field1.Field2 with a being set to "MRM" to access InputRoot.MRM.Field1.Field2. But you couldn't set a to "MRM.Field1.Field2" and use InputRoot.{a} to access InputRoot.MRM.Field1.Field2.
You can use Java and XPath, otherwise. _________________ I am *not* the model of the modern major general. |
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