HL7 DataFormat

HL7 DataFormat

This component ships with a HL7 dataformat that can be used to format between String and HL7 model objects.

• marshal = from Message to byte stream (can be used when returning as response using the HL7 MLLP codec)
• unmarshal = from byte stream to Message (can be used when receiving streamed data from the HL7 MLLP

To use the data format simply instantiate an instance and invoke the marhsal or unmarshl operation in the route builder:

  DataFormat hl7 = new HL7DataFormat();
  ...
  from("direct:hl7in").marshal(hl7).to("jms:queue:hl7out");

In the sample above the HL7 is marshalled from a HAPI Message object to a byte stream and put on a JMS queue.
The next example is the opposite:

  DataFormat hl7 = new HL7DataFormat();
  ...
  from("jms:queue:hl7out").unmarshal(hl7).to("patientLookupService");

Here we unmarshal the byte stream into a HAPI Message object that is passed to our patient lookup service.

The unmarshal operation adds these MSH fields as headers on the Camel message:

All headers are String types.