How do i check the incoming message type(hl7, xml , json) ,that is there in received file ?

Question

i am sending a file from A folder to B folder.that file can have hl7 or xml or json format data now on recieving the file on B folder i also want to put some check to know that which kind of data format file contains.so how to do that?

a big thanks in advance.

Answer 1

In a folder, you should be able to rely on the extension of the file.  For example, only pick up xml files: c:\some\path\*.xml 

Or only pick up JSON files: c:\some\path\*.json

In sometime cases you don't have an extension.  So, you would need to set your Source message type to Text (ISO-8859-1 encoding) or Binary, and then determine the type programmatically.

Then in a mapping node, you can attempt to parse the message into the different types.  Here is the script you could use:

var messageType = "UNKNOWN";
var newMessage;

try {
   newMessage = qie.parseXMLString(source.getNode("/"));
   message = qie.createXMLMessage(source.getNode("/"), 'UTF-8');
   messageType = "XML";
} catch (xmlErr) {
   qie.debug("Caught this XML error: " + xmlErr);
   try {
      newMessage = qie.parseJSONString(source.getNode("/"));
      message = qie.createJSONMessage(source.getNode("/"), 'UTF-8');
      messageType = "JSON";
   } catch (jsonErr) {
      qie.debug("Caught this JSON error: " + jsonErr);
      try {
         newMessage = qie.parseHL7String(source.getNode("/"));
         message = qie.createHL7Message();
         message.setNode("/", source.getNode("/"));
         messageType = "HL7";
      } catch (hl7Err) {
         qie.debug("Caught this HL7 error: " + hl7Err);
         try {
            newMessage = qie.parseCSVString(source.getNode("/"));
            message = qie.createCSVMessage();
            message.setNode("/", source.getNode("/"));
            messageType = "CSV";
         } catch (csvErr) {
            qie.debug("Caught this CSV error: " + csvErr);
            messageType = "UNKNOWN";
         }
      }
   }
}
qie.debug("Determined Message Type is " + messageType);
messageCache.setValue('messageType', messageType);
 

Here is the exported config for my test channel:
https://www.qvera.com/kb/?qa=blob&qa_blobid=9553839279022932067
 

 

Comments

The given answer is absolutely working fine with json and xml format but still i am not able to recognize HL7 message type..so please help me to idetify hl7 message type..

---

Oops.  You are correct.  I have updated my example with HL7 in the mix as well.