and alert
This alert monitors any logical operation combining other named alerts.
Clicking the Select And Alert Source dialog box,
where you configure the alert. At first, the dialog box is blank. In this case, click
to open the Select Alerts dialog box. Otherwise, the table lists the
alert names the "and" alert is combining and the and
or
nand
logical operation for each alert.
This dialog box lists the names of all available named alerts within the current site and master site. The list of alert names is sorted in ascending order and is case-insensitive. Master site names are shown in italic font.
Select the check box in the "Not" column to specify the alert is in
nand
logical operation; or, clear the check box to
specify the alert is in and logic operation.
All "and" alerts are run last in a polling of the alerts. The value of any source has been updated before it runs. The order of running several "and" alerts is sorted by definition so that the alert’s sources are run before the referencing alert.
Because the alert specification is stored in the alert file, any alert file name conflict is handled before the alert name conflict. When a master site alert file has a name conflict as locals, the alerts that are defined in the master site alert file are disregarded.
The Source field is space-delimited.
If the alert name has spaces, then the alert name and corresponding logical operation are surrounded with curly brackets.
The Comparing operations for this alert are == or ! =. The only values to be compared are true or false.
Runtime errors disable the "and" alert. For example, when a source is not found among the alerts, or a circular reference is found.
In this example "B" references" C" which references "B":
Alert Name = "B"
Alert Type = "and"
Source = "C"
Source Count = "all"
Comparing = "==" and "false"
Duration = "once"
Action = "notify"
Alert Name = "C"
Alert Type = "and"
Source = "B"
Source Count = "all"
Comparing = "==" and "true"
Duration = "N minutes" and "30"
Action = "notify"
This results in an unexpected alert behavior and is logged as a warning.