An Alternate XML Syntax for FHIR Extensions

In an earlier post Mark reviewed some proposed requirements for the syntax of FHIR extensions and how the previously considered alternatives align with those goals. In this post I’m going to describe an additional alternative that I’d like to submit for consideration. I’m going to focus on the XML syntax in this post but a subsequent post will address the JSON representation.

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FHIR Transactions

There has been a lot discussion on the Skype Implementers channel and other forums about FHIR Transactions, specifically the rules around HTTP POST and the use of Bundle.entry.fullUrl and Bundle.entry.resource.{resourceType}.id, and how servers should behave.

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Syntaxes for #FHIR Extensions (Part 2)

In the last post, I took up Grahame’s request for feedback on possible alternative syntax for extensions. To review, the goal would be to eliminate the use of the <extension> tag and use readable names, similar to the way core elements are represented. It may or may not be possible to improve on the current representation, but it is worth investigating. In the last post, I listed the following requirements:

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Alternative syntaxes for #FHIR extensions

Recently, Grahame posted a request on his blog requesting feedback on how FHIR represents extensions (http://www.healthintersections.com.au/?p=2467). Currently, all extensions appear under <extension> tags. This makes the wire format hard to read, particularly when there are nested extensions. The worst-case scenario involves using the Basic resource to create a new profile built entirely of extensions, resulting in definitions and instances with deeply nested <extension> tags and lacking of readable names, falling short of FHIR’s goal of “a human-readable wire format for ease of use by developers.”

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Light My FHIR!

Welcome to the LightMyFHIR blog. For several years, folks at MITRE Corporation have been working with and working on FHIR. We have many experiences to share with the broader FHIR community. This blog is one of the ways the MITRE team will be sharing our ideas, suggestions, creations, and conniptions.

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