CQL on Firely: Digital measures for .NET
summary
Demonstrates running CQL measures inside .NET by calling the Java CQL->ELM via Java CLI, then using Firely’s SDK to transpile ELM-to-C# and compile DLLs on the fly, with dynamic assembly load contexts and breakpoint debugging (example: a contrived “jet engine” measure). Builds integrate into MSBuild/VS pipelines, package outputs into FHIR resources and NuGet, and run against large decks (HEDIS decks ~30,000 patients, ~2,096 unit tests). Preview ships with Firely SDK 5.3; GA target ~Sept (fallback Jan).
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chapters (12)
- 0:00Introduction and setup
- 2:27Overview of CQL and .NET integration
- 6:18Project setup and CQL compilation
- 11:16CQL to C# transpilation demo
- 14:24Executing measures in .NET
- 18:54Packaging measures as FHIR resources
- 22:44Running Elm directly
- 24:51Debugging CQL in Visual Studio
- 32:03Internal HEDIS solution structure
- 35:12NuGet packaging and deployment
- 37:18Release timeline and availability
- 38:00Q&A session
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