CQL Conformance

Implementation State of ELM Forms

The section numbers refer to the documentation of the ELM Specification v1.5.1. Please note that CQL itself translates to ELM, but doesn't use every ELM feature. Because Blaze implements ELM and not CQL directly, the documentation is about the ELM forms and not about the CQL forms. A clear view about the CQL coverage of Blaze is not available yet.

1. Simple Values

Num	Group	Expression	State	Notes
1.1.	Literal	!	only `Boolean`, `Integer`, `Decimal`, `String`

2. Structured Values

Num	Group	Expression	State	Notes
2.1.	Tuple	✓
2.2.	Instance	✓
2.3.	Property	!	no full FHIRPath	FHIRPath is not used by CQL

3. Clinical Values

Num	Group	Expression	State
3.1.	Code	✓
3.2.	CodeDef	✓
3.3.	CodeRef	!	only inside same library
3.4.	CodeSystemDef	✓
3.5.	CodeSystemRef	!	only inside same library
3.6.	Concept	✓
3.7.	ConceptDef	✓
3.8.	ConceptRef	✓
3.9.	Quantity	✓
3.10.	Ratio	✓
3.11.	ValueSetDef	✗
3.12.	ValueSetRef	✗

4. Type Specifiers

Num	Group	Expression
4.1.	TypeSpecifier	✓
4.2.	NamedTypeSpecifier	✓
4.3.	IntervalTypeSpecifier	✓
4.4.	ListTypeSpecifier	✓
4.5.	TupleTypeSpecifier	✓
4.6.	ChoiceTypeSpecifier	✓

5. Libraries

Num	Group	Expression	State
5.1.	Library	✓
5.2.	IncludeDef	!	no custom includes, only FHIRHelpers
5.3.	VersionedIdentifier	✗
5.4.	ContextDef	✗

6. Data Model

Num	Group	Expression	State	Notes
6.1. UsingDef	!	only FHIR R4

7. Parameters

Num	Group	Expression	State	Notes
7.1.	ParameterDef	✓
7.2.	ParameterRef	✓

8. Expressions

Num	Group	Expression
8.1.	Expression	✓
8.2.	OperatorExpression	✓
8.3.	UnaryExpression	✓
8.4.	BinaryExpression	✓
8.5.	TernaryExpression	✓
8.6.	NaryExpression	✓
8.7.	AggregateExpression	✓

9. Reusing Logic

Num	Group	Expression	State
9.1.	ExpressionDef	✓
9.2.	ExpressionRef	!	only inside same library
9.3.	FunctionDef	✓
9.4.	FunctionRef	!	hard coded implementation of some functions
9.5.	OperandRef	✓

10. Queries

Num	Group	Expression	State
10.1.	Query	✓
10.2.	AliasedQuerySource	!	only single source
10.3.	AliasRef	✓
10.4.	ByColumn	✓
10.5.	ByDirection	✓
10.6.	ByExpression	✓
10.7.	IdentifierRef	✓
10.8.	LetClause	✗
10.9.	QueryLetRef	✗
10.10.	RelationshipClause	✓
10.11.	ReturnClause	✓
10.12.	AggregateClause	✗
10.13.	SortClause	✓
10.14.	With	✓
10.15.	Without	✓

11. External Data

Num	Group	Expression	State	Notes
11.1.	Retrieve	!	no date ranges
11.2.	IncludeElement	✗

12. Comparison Operators

Num	Group	Expression
12.1.	Equal	✓
12.2.	Equivalent	✓
12.3.	Greater	✓
12.4.	GreaterOrEqual	✓
12.5.	Less	✓
12.6.	LessOrEqual	✓
12.7.	NotEqual	✓

13. Logical Operators

Num	Group	Expression
13.1.	And	✓
13.2.	Implies	✓
13.3.	Not	✓
13.4.	Or	✓
13.5.	Xor	✓

14. Nullological Operators

Num	Group	Expression
14.1.	Null	✓
14.2.	Coalesce	✓
14.3.	IsFalse	✓
14.4.	IsNull	✓
14.5.	IsTrue	✓

15. Conditional Operators

Num	Group	Expression	State	Notes
15.1.	Case	✓
15.2.	If	✓

16. Arithmetic Operators

Num	Group	Expression
16.1.	Abs	✓
16.2.	Add	✓
16.3.	Ceiling	✓
16.4.	Divide	✓
16.5.	Exp	✓
16.6.	Floor	✓
16.7.	HighBoundary	✗
16.8.	Log	✓
16.9.	LowBoundary	✗
16.10.	Ln	✓
16.11.	MaxValue	✓
16.12.	MinValue	✓
16.13.	Modulo	✓
16.14.	Multiply	✓
16.15.	Negate	✓
16.16.	Power	✓
16.17.	Precision	✗
16.18.	Predecessor	✓
16.19.	Round	✓
16.20.	Subtract	✓
16.21.	Successor	✓
16.22.	Truncate	✓
16.23.	TruncatedDivide	✓

17. String Operators

Num	Group	Expression
17.1.	Combine	✓
17.2.	Concatenate	✓
17.3.	EndsWith	✓
17.4.	Equal	✓
17.5.	Equivalent	✗
17.6.	Indexer	✓
17.7.	LastPositionOf	✓
17.8.	Length	✓
17.9.	Lower	✓
17.10.	Matches	✓
17.11.	Not Equal	✓
17.12.	PositionOf	✓
17.13.	ReplaceMatches	✓
17.14.	Split	✓
17.15.	SplitOnMatches	✗
17.16.	StartsWith	✓
17.17.	Substring	✓
17.18.	Upper	✓

18. Date and Time Operators

Num	Group	Expression	State
18.1.	Add	✓
18.2.	After	✓
18.3.	Before	✓
18.4.	Equal	✓
18.5.	Equivalent	✓
18.6.	Date	✓
18.7.	DateFrom	✓
18.8.	DateTime	✓
18.9.	DateTimeComponentFrom	✓
18.10.	DifferenceBetween	!	same as DurationBetween
18.11.	DurationBetween	✓
18.12.	Not Equal	✓
18.13.	Now	✓
18.14.	SameAs	✓
18.15.	SameOrBefore	✓
18.16.	SameOrAfter	✓
18.17.	Subtract	✓
18.18.	Time	✓
18.19.	TimeFrom	✓
18.20.	TimezoneOffsetFrom	✓
18.21.	TimeOfDay	✓
18.22.	Today	✓

19. Interval Operators

Num	Group	Expression
19.1.	Interval	✓
19.2.	After	✓
19.3.	Before	✓
19.4.	Collapse	✓
19.5.	Contains	✓
19.6.	End	✓
19.7.	Ends	✓
19.8.	Equal	✓
19.9.	Equivalent	✓
19.10.	Except	✓
19.11.	Expand	✗
19.12.	In	✓
19.13.	Includes	✓
19.14.	IncludedIn	✓
19.15.	Intersect	✓
19.16.	Meets	✓
19.17.	MeetsBefore	✓
19.18.	MeetsAfter	✓
19.19.	Not Equal	✓
19.20.	Overlaps	✓
19.21.	OverlapsBefore	✓
19.22.	OverlapsAfter	✓
19.23.	PointFrom	✓
19.24.	ProperContains	✓
19.25.	ProperIn	✓
19.26.	ProperIncludes	✓
19.27.	ProperIncludedIn	✓
19.28.	Size	✗
19.29.	Start	✓
19.30.	Starts	✓
19.31.	Union	✓
19.32.	Width	✓

20. List Operators

Num	Group	Expression	State
20.1.	List	✓
20.2.	Contains	✓
20.3.	Current	✓
20.4.	Distinct	✓
20.5.	Equal	✓
20.6.	Equivalent	✓
20.7.	Except	✓
20.8.	Exists	✓
20.9.	Filter	✓
20.10.	First	✓
20.11.	Flatten	✓
20.12.	ForEach	✓
20.13.	In	✓
20.14.	Includes	✓
20.15.	IncludedIn	✓
20.16.	IndexOf	✓
20.17.	Intersect	✓
20.18.	Last	!	no orderBy
20.19.	Not Equal	✓
20.20.	ProperContains	✓
20.21.	ProperIn	✓
20.22.	ProperIncludes	✓
20.23.	ProperIncludedIn	✓
20.24.	Repeat	✗
20.25.	SingletonFrom	✓
20.26.	Slice	✓
20.27.	Sort	✓
20.28.	Times	✓
20.29.	Union	✓

21. Aggregate Operators

Num	Group	Expression	State	Notes
21.1.	AllTrue	!	no path	path not used from CQL
21.2.	AnyTrue	!	no path	path not used from CQL
21.3.	Avg	!	no path	path not used from CQL
21.4.	Count	!	no path	path not used from CQL
21.5.	GeometricMean	!	no path	path not used from CQL
21.6.	Product	!	no path	path not used from CQL
21.7.	Max	!	no path	path not used from CQL
21.8.	Median	!	no path	path not used from CQL
21.9.	Min	!	no path	path not used from CQL
21.10.	Mode	!	no path	path not used from CQL
21.11.	PopulationVariance	!	no path	path not used from CQL
21.12.	PopulationStdDev	!	no path	path not used from CQL
21.13.	Sum	!	no path	path not used from CQL
21.14.	StdDev	!	no path	path not used from CQL
21.15.	Variance	!	no path	path not used from CQL

22. Type Operators

Num	Group	Expression	State
22.1.	As	!	no strictness
22.2.	CanConvert	✗
22.3.	CanConvertQuantity	✓
22.4.	Children	✓
22.5.	Convert	✗
22.6.	ConvertQuantity	✓
22.7.	ConvertsToBoolean	✓
22.8.	ConvertsToDate	✓
22.9.	ConvertsToDateTime	✓
22.10.	ConvertsToDecimal	✓
22.11.	ConvertsToLong	✓
22.12.	ConvertsToInteger	✓
22.13.	ConvertsToQuantity	✓
22.14.	ConvertsToRatio	✓
22.15.	ConvertsToString	✓
22.16.	ConvertsToTime	✓
22.17.	Descendents	✓
22.18.	Is	✓
22.19.	ToBoolean	✓
22.20.	ToChars	✓
22.21.	ToConcept	✓
22.22.	ToDate	✓
22.23.	ToDateTime	✓
22.24.	ToDecimal	✓
22.25.	ToInteger	✓
22.26.	ToList	✓
22.27.	ToLong	✓
22.28.	ToQuantity	✓
22.29.	ToRatio	✓
22.30.	ToString	✓
22.31.	ToTime	✓

23. Clinical Operators

Num	Group	Expression
23.1.	AnyInCodeSystem	✗
23.2.	AnyInValueSet	✗
23.3.	CalculateAge	✓
23.4.	CalculateAgeAt	✓
23.5.	Equal	✓
23.6.	Equivalent	✓
23.7.	InCodeSystem	✗
23.8.	InValueSet	✗
23.9.	ExpandValueSet	✗
23.10.	Not Equal	✓
23.11.	SubsumedBy	✗
23.12.	Subsumes	✗

24. Errors and Messages

Num	Group	Expression	State	Notes
24.1. Message	✗

CQL Conformance ​

Implementation State of ELM Forms ​

1. Simple Values ​

2. Structured Values ​

3. Clinical Values ​

4. Type Specifiers ​

5. Libraries ​

6. Data Model ​

7. Parameters ​

8. Expressions ​

9. Reusing Logic ​

10. Queries ​

11. External Data ​

12. Comparison Operators ​

13. Logical Operators ​

14. Nullological Operators ​

15. Conditional Operators ​

16. Arithmetic Operators ​

17. String Operators ​

18. Date and Time Operators ​

19. Interval Operators ​

20. List Operators ​

21. Aggregate Operators ​

22. Type Operators ​

23. Clinical Operators ​

24. Errors and Messages ​