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The HL7 Clinical Quality Language specification is designed to enable accurate authoring and automated sharing of computable knowledge artifacts including quality measures, decision support rules, orders sets and documentation templates. The specification is constructed using a layered approach informed by modern programming language and compiler design which facilitates the development of language processing applications including static analysis, translation, and evaluation.
The specification includes informative open source tooling that can be used to verify the semantics of CQL libraries; to produce the sharable format, Expression Logical Model (ELM), of those libraries; and to evaluate the resulting libraries using a prototypical JavaScript-based ELM interpreter.
This project builds on that tooling to provide an open source Java-based evaluation engine capable of evaluating the result of any CQL expression.
- JPA Server Implementation
- FHIRPath Implementation
- Portable Test Suite