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  #1  
Old 12-07-2009, 06:37 AM
cmarchione cmarchione is offline
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Join Date: Apr 2008
Posts: 8
cmarchione
Question Setting Transformer Variables using Javascript

Hello,
I need to extract information from a Patient Identifier List (array) and I am not sure how to set a variable in a transformer to update a database table.
Basically my code loops thru repeating PID segments in a transformer step. Most of the steps are Mappers (i.e.: variable name, msg[blah])

This is what I have: the transformer step is called "pid_3_patient_id" (javascript type)

var msg = channelMap.get('msg');
var type_code = "";

for each (pid in msg..PID)
{
var type_code = pid['PID.3']['CX.5'].toString();
if (type_code == "MR")
)
pid_3_patient_id = pid['PID.3']['CX.1'].toString();
}
}

but this errors out...i am unable to save it.
Any assistance would be greatly appreciated!
Thanks!
Carol
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  #2  
Old 12-07-2009, 02:06 PM
jim jim is offline
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Carol, there may be a simpler way to get the information using javascript. Normally an HL7 message has only one PID segment:

var type_code=msg['PID']['PID.3']['PID.3.5'].toString()
if (type_code == "MR"){
var pid_3_patient_id=msg['PID']['PID.3']['PID.3.1'].toString();
}

If there are multiple PID segments in the HL7 message being sent into the Transformer then you would have to apply a sequence number to each PID segment like so:

for (pidSeq in msg['PID']){
var type_code=msg['PID'][pidSeq]['PID.3']['PID.3.5'].toString()
if (type_code == "MR"){
var pid_3_patient_id=msg['PID'][pidSeq]['PID.3']['PID.3.1'].toString();
}
}

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