Date post: | 25-May-2015 |
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Technology |
Upload: | victor-chai |
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YOUR APPLICATIONS
Victor CHAI
HL7 Singapore
Set the context …
• Do we copy and paste the external content into our site page, or we simply use URL link to reference the external content when we build a web site?
• What’re the benefits? – Prevent information proliferation, and avoid obsolete information
– There is no need to fetch all at one go, the requester can ‘follow’ the
path to navigate to the needed information, reduce the network traffic and payload size
– Each app can focus on managing its own information, and relies on reference to build up network of information
What is FHIR
• FHIR® – Fast Health Interoperable Resources (hl7.org/fhir) – is a next generation standards framework created by HL7
• FHIR solutions are built from a set of modular components called “Resources”
FHIR Overview
• “Resource “ is unit of transactional data such as patient or encounter data that is stored or exchanged
• Easily accessible
– http://server.org/resources/Patient/AA1234567
endpoint
resource type
Logical ID
HL7 FHIR - A network of resources
Encounter (Resource)
Patient (Reference)
Hospitalization Practitioner (Reference)
Location (Reference)
Location (Reference)
Participant
Location
Encounter Resource Definition
HL7 FHIR wire format • Supports both XML and JSON
• A Human-readable wire format for ease of use by developers
• Out of box extension support
How easy it is to implement FHIR
How is FHIR different from HL7v2 and HL7 CDA
• Combines best features of HL7v2 and HL7CDA – Simple to implement, easy to extend
• Defines application services syntax
– Besides payload, it also defines API for search/create/update/delete/read resources
• Use “Profile” to create and manage data dictionary and
Conformance toolkit – After you have implemented FHIR, you also achieved the objective of
creating data dictionary – “Profile” resource is also used for runtime structure and value set
validation as part of the conformance toolkit
HL7 FHIR RESTful API
API Services - Search
Search Parameters Search parameters for Encounter resource
HTTP Response Status Code
Resource Profile – Data Element and Code Set definition
Resource Profile – Search parameters
FHIR standardises and simplifies application design
• Use HL7 FHIR as straight-through resource API and internal object model
• There is no intermediate transformation
FHIR in Action
Setting up hl7-fhir project
Summary
• If you are keen, download the following FHIR open source project – http://sourceforge.net/projects/hl7-fhir/
– I am recruiting volunteer
• Learn from standards, adopt and adapt instead of re-invent – http://www.hl7.org/fhir
THANK YOU