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To give an example of where I have done something similar:
I have a Service that will check if the active mirror has changed since the last poll, and will trigger a message to the "Ens.Alert" component in the production if it has changed.
To do this, I have a service with the following code:
Class Demo.Monitoring.SystemMonitor Extends Ens.BusinessService
{
Method OnProcessInput(pInput As %RegisteredObject, Output pOutput As %RegisteredObject, ByRef pHint As %String) As %Status
{
Set tsc = ..CheckMirroring()
Quit tsc
}
Method CheckMirroring() As %Status
{
Set triggered = 0
//Get the current server
Set CurrServer = $PIECE($SYSTEM,":")
/**Check Global exists, and create it if it does not.(Should really only ever happen once on deployment, but this is a failsafe)**/
Set GBLCHK = $DATA(^$GLOBAL("^zMirrorName"))
If GBLCHK = 0{
Set ^zMirrorName = CurrServer
Quit $$$OK //No need to evaluate on first run
}
If ^zMirrorName = CurrServer {
/*Do not Alert*/
Quit $$$OK
}
Else {
/*Alert*/
Set AlertMessage = "The currently active server has changed since the last check, suggesting a mirror fail over."
Set AlertMessage = AlertMessage_" The previous server was "_^zMirrorName_" and the current server is "_CurrServer_"."
Set ^zMirrorName = CurrServer
Set req=##class(Ens.AlertRequest).%New()
Set req.SourceConfigName = "System Monitor"
Set req.AlertText = AlertMessage
Set req.AlertTime = $ZDATETIME($HOROLOG,3)_".000"
Set tSC = ..SendRequestSync("Ens.Alert", req)
Quit tSC
}
}
}Then, from within my production, I then have the service that is using this class configured with "CallInterval" set to the desired frequency of running:
.png)
Hey Lukasz.
Do you not get this option after selecting the namespace?.png)
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It's slightly dependant on the HL7 Version and Message Type, but assuming you're working with ORM_O01 messages using HL7 V2.3, you have a few options:
Example 1, Multiple Ifs, one for each variation (I only did 2 in the screenshot to save time) :.png)
Example 2, If/Else where we assume that we only want "I" in OBR:18 when PV1:2 is "I", and otherwise set to "O":
Example 3, use the $CASE function:
All of these can be combined with the response you just got here HL7 DTL formatting | InterSystems Developer Community | Business Process for the same question, assuming you want to put them into a subtransform, but I'd start with what I have shared here first, and venture into subtransforms and auxiliary-based configs after you get this nailed down.