What is the class of config item ‘TEST_ROUTER’ ?

Maybe not EnsLib.HL7.MsgRouter.RoutingEngine, which exposes the HL7 property.

The curly brace syntax "source.{PID:12}" is not supported in code action as the block is included as is in the class code generated at compile time. Use GetValueAt() to achieve the same effect :
 

Set country = source.GetValueAt("PID:12")

You can use $classmethod to invoke any class method, including %New, e.g. 

set cls = "MyPackage.MyClass"
set obj = $classmethod(cls,"%New")

Hi,

To summarize the documentation :

• ReplyCodeActions settings of HL7 operations is a comma-separated list of specifiers in the form <code>=<actions>, where <code> is an expression matching error condition(s) and <actions> is a string of one letter action codes.
• All codes where <actions> consists of only 'W' (for 'log a Warning') will be evaluated, and a warning will be generated for each matching <code>.
• Other <code> values will be evaluated in left-to-right order, executing the first matching <code> that has a non-warning <actions> value. As noted in the details for the 'W' flag, an error that only triggers 'W' <actions> will be treated as Completed OK.
• if ReplyCodeActions is empty, a default setting is used. For HL7 operations, it is : 

  • :?R=RF,:?E=S,:~=S,:?A=C,:*=S,:I?=W,:T?=C

To match the application reject code in the HL7 ACK^O01 message in the example, and suspend all matching messages, use the following specifier, that matches all ACKs with MSA:1 = "AR" and suspend message, while retaining default behavior for other error conditions : 

:?R=S,:?E=S,:~=S,:?A=C,:*=S,:I?=W,:T?=C

As Enrico mentions, HL7 v2 message grammars, segment structures and data type syntaxes are available in IRIS schemas. Complete specifications and semantics are detailed in the normative documents available  on HL7.org web site.

Yes, ^SPOOL is the simplest way to achieve this. If you need a string rather than a global, you can just get all lines from ^SPOOL, for example :

ClassMethod ZWriteToString() As %String
{
 #Dim result as %String
 #Dim i,lineCount as %Integer
 
 kill ^SPOOL($j)
 open 2:$j
 use 2
 zwrite
 s result=""
 s lineCount=$select($data(var):$za-1,1:$za-2)
 close 2
 for i=1:1:lineCount s result=result_^SPOOL($j,i)	
 return result
}

EnsLib.HL7.Service.HTTPService may suit your needs : it implements reading HL7 message from incoming HTTP request.

To clean pending messages and other suspended production data, you can use Ens.Director.CleanProduction() method, as explained in the documentation. Caution though, this will delete current production state, including removing message headers (Ens.MessageHeader instances) from queues.