Thanks a lot Robert. I completely forgot about multiple inheritance 😶

Thanks so much! It was not obvious for me that the DebugMode property value is of type integer (looks like boolean)

Interesting... I'm actively using the Write method, but for emitting console messages using constant strings. Anyway, thanks

It seems to me that I found the answer (was googling for two hours and found nothing, then used forum search and voila):

1. Declare a class which inherits Ens.Production:

Class My.Production Extends Ens.Production
{

XData ProductionDefinition
{
<Production Name="My.Production" TestingEnabled="true" LogGeneralTraceEvents="true">
  <Description></Description>
  <ActorPoolSize>1</ActorPoolSize>
</Production>
}
}

2. And launch:

Set isProductionRunning = ##class(Ens.Director).IsProductionRunning("My.Production")
If isProductionRunning = 0 {
            Set sc = ##class(Ens.Director).StartProduction("My.Production")
}

Ended up with a compromise 😊 Just replaced <transform> with a <call> and delegated that transform to BO 

> What parameter are you trying to change?

My subclassed Transform calls some external web service and I want to  allow a user configure that web service settings (url-port-ssl-etc) by clicking on the business process <transform> element. Also, it is crucial that such a transformation cannot be delegated to BO. So anyway, thank you, it is fine if I move settings to BP, but it is not that elegant :(

Perfect, thanks a lot

Got it! Now I'm struggling with adding a value to that array. Would it be correct?

set arr(arr + 1) = value

Thanks Robert. 

> args = number of params

Arrays in IRIS are counterintuitive 😥

Here it is:

Class MyHL7HTTPService Extends EnsLib.HL7.Service.HTTPService
{

Method OnAdapterHTTPResponse(
    ByRef pStatus As %Status,
    ByRef pHTTPResponseStatus As %String,
    ByRef pBodyLen As %Integer,
    ByRef pResponseBodyStream As %Stream.Object,
    ByRef pMainResponseHeader As %String,
    ByRef pHeaderExtra As %String)
{
    set pHeaderExtra = pHeaderExtra _ "Access-Control-Allow-Origin: *"_ $char(13) _ $char(10) 
                                    _ "Access-Control-Allow-Headers: *" _ $char(13) _ $char(10) 
                                    _ "Access-Control-Allow-Methods: *" _ $char(13) _ $char(10)
}

}

I need to find a reason of a performance bug in the source code of the original class :) 

Great answer! And yes, I badly need that for testing!

Thanks, I caught your idea but no, IIS is not a cause, although the issue exists in Windows but not in Linux

I'm using Postman, the default Accept header value was */*, then according your advice I tried application/json, then application/fhir+json, both not working, IRIS still produces HTML

<div id="content">
        <div class="content-container">
            <fieldset>
                <h2>500 - Internal server error.</h2>
                <h3>There is a problem with the resource you are looking for, and it cannot be displayed.</h3>
            </fieldset>
        </div>
    </div>

I have ended up with Hyper-V and Ubuntu but thanks 

Thanks but I doubt it's a license issue. The IRIS installer creates another log in C:\Windows directory, and it also contains no useful information. At some point the installation process just hangs as well as the log file stops growing.

UPD1: launched the installation package via the "Run as administrator" menu item. Now the messages.log file contains the following diagnostics info:

- on Ryzen 3900 - the processor has too many cores which is not allowed by Community edition license

- on Athlon 3000G the error message is less informative: `11/06/22-01:06:28:788 ( 5200) 3 irisctl.dll (error during startup):(289) IRIS failed to start.  IRIS Control Process terminated abnormally (exit code = 0).`