2 Patients Route

This route receives a request for information on a patient. The route extracts the requested data from the FHIR Server based on the request parameters. As the date of birth is not a mandatory request parameter, the route might retrieve information on a few patients with the same first and last names. The route splits the data received from the FHIR Server into separate JSON-formatted files, one for each patient. All the files are batched into a single message, and the corresponding route component sends the resulting data back through an HTTP response.

Route Structure

Route Components Description

Component Name	Component Type	Description
Request Patients	RESTful Web Service Inbound	Receives an HTTP request for information on a specific patient.
HTTP	Router	Checks the request type.
405 Method Not Allowed	RESTful Web Service Outbound	Sends back an error message that the request type used is invalid.
Required Params	Router	Selects the parameters required to look up a patient.
GET Patients	FHIR System Action	Extracts the requested information from the FHIR Server in the form of a FHIR Bundle.
OK?	Router	Checks to see if the requested information has been successfully retrieved from the FHIR Server.
Any Error	Error Channel Inbound	Triggers the 500 Internal Server Error to send out an internal server error HTTP response when there are processing errors.
500 Internal Server Error	RESTful Web Service Outbound	Sends out an internal server error message.
Parse JSON	JSON Value Extractor	Extracts the requested data from the incoming Bundle and saves the data in the form of message properties.
Exists?	Router	Checks to see if the requested information was successfully retrieved.
200 OK	RESTful Web Service Outbound	Sends out an HTTP response stating that no such patient data is available.
For Each Patient	Groovy	Splits the data in the properties file by patient.
Build JSON	Velocity	Restructures the incoming data based on the Velocity template that is available.
Aggregate	Aggregation	Aggregates all the requested data into a single file.
200 OK	RESTful Web Service Outbound	Sends back the requested data.