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Setting Event Monitoring Criteria
Issue 1.0 June 2002 29
Assigning to the ADU Server and monitoring an ADU do not add a client's name to the internal list
of ADU-modifying clients. (The internal list of clients is described in “ADU Termination,” on
page 12.) Assigning allows the client to watch the activity of an ADU. The client does not have to
issue an ADU.Terminate() for each ADU being watched.
By default, a client's assign criteria is distributed to all ADU servers. If this is not desired, prefix
the Assign or Monitor expression with a colon symbol (:):
For example:
[ADU.Assign(":loginid=wynn")]
If you specify both : and +, : must come first. So ":a=b" watches field a for value b, and reports
only on those local vdus.
Note: In this sense, local means "this VDU server". If you fail over to a different VDU server, you
may not get the result you were expecting.
iver=148
To test, try: [ADU.Assign(":state#Z")]
In a WAN, your ADU server should show events coming back for all logged in agents, but the
other ADU servers should only get RemoteWatcher requests with empty strings, and should send
no events back.
Setting Event Monitoring Criteria
ADUs are selected for monitoring by criteria matching. A criteria is an expression that selects
some ADUs and rejects others according to a defined specification. If a criteria expression is
provided as a parameter to the Assign() or Monitor() method, each name/value pair in the ADU is
tested against it. If the criteria determine that a match exists, the ADU is watched. Subsequent
changes are sent to the client as change events.
The following values cannot be successfully used in an Assign criteria:
createtime
createtimet
duration
endtime
suspend
termination
transfercount.
Monitoring Criteria: Syntax
The general syntax of a criteria statement is:
method (name relationalop value [booleanop] name relationalop value)